Patent US4583907A successfully refreshed from Google Patents.
US4583907A
Expired / Lapsed
US
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Extensible apparatus
Assignee: WORLD EXTENDING EQUIPMENT Inc
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Filing: 1984-05-18
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Granted: 1986-04-22
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Expires: 2004-05-18
Abstract
Abstract Highly flexible extensible apparatus for employing an end-use work tool for one of multiple purposes characterized by combinations of a pivotal base; main support structure; pivotally mounted support structure; extensible base unit having first and last respective pairs of booms and levers; attachments for the work tool; and a plurality of extension units each comprising respective pairs of booms and levers. Preferably, the base comprises an upper base plate that is rotatably mounted on a lower base plate to afford 360° of rotation. In a still more flexible embodiment, a second pivotal support structure can be employed at the end of the extensible apparatus extending from the first either fixed or pivotally mounted support structure. Respective extensible units such as hydraulic rams are preferably employed for extending and changing the angle of support of the main boom.
Inventors
- 👤 Ronald J. Wimberley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:40
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/065; Y; Y10; Y10S; Y10S414/00; Y10S414/13
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
604 words
An extensible apparatus adaptable for employing an end-use work tool for one of multiple purposes and comprising: a. a base; b. a main support structure fixedly connected with said base; c. pivotally mounted support structure pivotedly mounted on said main support structure and having an angle of support for cantilevered structural levers and booms; d. a first extensible means for pivoting said pivotally mounted support structure so as to change its said angle of support; said first extensible means being connected with said support structure and said pivotally mounted support structure; e. at least one pair of respective first boom and first lever having their respective near ends pivotally connected with said support structure such that pivoting of said pivotally mounted support structure changes the relative positions of said respective near ends so as to effect said angle of support; said first boom having a remote lever pivot point adjacent its remote end for connection with a subsequent lever; said first lever having a remote lever pivot point for connection with an intermediate fulcrum point of a subsequent lever and having intermediate said near-end and said remote end pivot point an intermediate boom pivot point connection for connection with a subsequent boom; f. a plurality of extension units connected with said first boom and lever, each said extension unit comprising a next lever and next parallel boom; the boom being pivotally connected at its near end with the respective boom pivot point of the immediately preceding lever and near the remote end thereof, and having a remote lever pivot point that is pivotally connected at its remote end with the respective near end of the next connected lever; the next lever being pivotally connected at its near end with the remote end of the respective immediately preceding boom, having a near lever pivot point that is connected to the remote end of the immediately preceding lever, having a remote boom pivot point that is connected to the respective next boom and a remote lever pivot point that is connected to the next succeeding lever, the sequential levers following the first lever having substantially the same length between a near end pinning point, to near lever pivot point, to remote boom pivot point, to remote end lever pivot point and wherein all booms exclusive of said first boom have substantially the same length between the near end pinning point and the remote end pinning point, the remote end of all levers at the remote end lever pivot point being maintained nearer to the work tool at all positions than the near end pivot point of the same lever and nearer to the work tool than the boom pivot points on the levers; whereby load leverage moments are equalized at all pnning points; whereby lockup of extensible apparatus is prevented; and warehousing and assembly are facilitated; g. a second extensible means for changing angles of said first boom and first lever with respect to said pivotally mounted support structure; h. an ultimate lever having a near end connected with said remote lever pivot point of the preceding boom, having a remote end work tool pivot connection point for connections with the work tool and having an intermediate fulcrum pivot point connected with said remote lever pivot point of the preceding lever; i. An ultimate boom having a near end pivotally connected with said intermediate boom pivot point of an immediately preceding lever and having a remote end work tool pivot connection point for connection with the work tool; and j. means for connecting the work tool with said remote ends of said ultimate boom and lever.
Claim 2
Dependent Claim
604 words
An extensible apparatus adaptable for employing an end-use work tool for one of multiple purposes and comprising: a. a base; b. a main support structure fixedly connected with said base; c. pivotally mounted support structure pivotedly mounted on said main support structure and having an angle of support for cantilevered structural levers and booms; d. a first extensible means for pivoting said pivotally mounted support structure so as to change its said angle of support; said first extensible means being connected with said support structure and said pivotally mounted support structure; e. at least one pair of respective first boom and first lever having their respective near ends pivotally connected with said support structure such that pivoting of said pivotally mounted support structure changes the relative positions of said respective near ends so as to effect said angle of support; said first boom having a remote lever pivot point adjacent its remote end for connection with a subsequent lever; said first lever having a remote lever pivot point for connection with an intermediate fulcrum point of a subsequent lever and having intermediate said near-end and said remote end pivot point an intermediate boom pivot point connection for connection with a subsequent boom; f. a plurality of extension units connected with said first boom and lever, each said extension unit comprising a next lever and next parallel boom; the boom being pivotally connected at its near end with the respective boom pivot point of the immediately preceding lever and near the remote end thereof, and having a remote lever pivot point that is pivotally connected at its remote end with the respective near end of the next connected lever; the next lever being pivotally connected at its near end with the remote end of the respective immediately preceding boom, having a near lever pivot point that is connected to the remote end of the immediately preceding lever, having a remote boom pivot point that is connected to the respective next boom and a remote lever pivot point that is connected to the next succeeding lever, the sequential levers following the first lever having substantially the same length between a near end pinning point, to near lever pivot point, to remote boom pivot point, to remote end lever pivot point and wherein all booms exclusive of said first boom have substantially the same length between the near end pinning point and the remote end pinning point, the remote end of all levers at the remote end lever pivot point being maintained nearer to the work tool at all positions than the near end pivot point of the same lever and nearer to the work tool than the boom pivot points on the levers; whereby load leverage moments are equalized at all pnning points; whereby lockup of extensible apparatus is prevented; and warehousing and assembly are facilitated; g. a second extensible means for changing angles of said first boom and first lever with respect to said pivotally mounted support structure; h. an ultimate lever having a near end connected with said remote lever pivot point of the preceding boom, having a remote end work tool pivot connection point for connections with the work tool and having an intermediate fulcrum pivot point connected with said remote lever pivot point of the preceding lever; i. An ultimate boom having a near end pivotally connected with said intermediate boom pivot point of an immediately preceding lever and having a remote end work tool pivot connection point for connection with the work tool; and j. means for connecting the work tool with said remote ends of said ultimate boom and lever.
Claim 3
Dependent Claim
29 words
The extensible apparatus of claim 1 wherein there are respective pairs of said respective first booms and first levers and ultimate booms and levers for stability when reaching far.
Claim 4
Dependent Claim
93 words
The extensible boom apparatus of claim 2 wherein the work tool comprises a cargo lift and said means for connecting the work tool comprises respective work tool booms and levers connected intermediate said work tool and said ultimate levers and booms with said work tool boom being connected with said remote boom pivot point of the preceding lever and said work tool lever being pivotally connected at its near end with preceding boom and having an intermediate fulcrum pivot point that is connected with said remote lever pivot point of the preceding boom.
Claim 5
Dependent Claim
97 words
The extensible boom apparatus of claim 2 wherein said remote ends of said ultimate boom and lever are connected with a pivotally mounted link to maintain parallelogram relationship and said work tool comprises a pivotally mounted cargo lift fork means for lifting; said lift fork means being pivotally connected with at least of one of said remote ends of said ultimate boom and lever and said pivotally mounted link; and wherein an extensible means is connected intermediate said lift fork means and at least one of said ultimate boom and lever for tilting said lift fork means.
Claim 6
Dependent Claim
85 words
The extensible boom apparatus of claim 2 wherein said remote ends of said ultimate boom and lever are connected with a pivotally mounted link to maintain parallelogram relationship and said work tool comprises a pivotally mounted digger; said digger being pivotally connected with at least one of said remote ends of said ultimate boom and lever and said pivotally mounted links; and wherein an extensible means is connected intermediate said digger and at least one of said ultimate boom and lever for tilting said digger.
Claim 7
Dependent Claim
63 words
The extensible boom apparatus of claim 2 wherein said work tool comprises a pincer tool having a pair of pivotally connected jaws for gripping; said remote ends of said ultimate boom and lever are connected with one jaw and an extensible means for extending and retracting its connected end intermediate said jaws for effecting opening and closing of said jaws of said pincer.
Claim 8
Dependent Claim
83 words
The extensible apparatus of claim 2 wherein a second said pivotal support structure is pivotally connected with said remote ends of said ultimate booms and levers; and wherein there are provided a second extensible means for tilting said second pivotally mounted support structure; second respective pairs of first booms and levers; second respective pairs of extension units with their respective pairs of booms and levers; and second respective pairs of ultimate booms and levers; all being connected together for exceptional flexibility and reach.
Claim 9
Dependent Claim
96 words
The extensible apparatus of claim 1 wherein said remote ends of said ultimate boom and lever are connected with a pivotally mounted link to maintain parallelogram relationship and said work tool comprises a pivotally mounted cargo lift fork means for lifting; said lift fork means being pivotally connected with at least of one of said remote ends of said ultimate boom and lever and said pivotally mounted link; and wherein an extensible means is connected intermediate said lift fork means and at least one of said ultimate boom and lever for tilting said lift fork means.
Claim 10
Dependent Claim
84 words
The extensible apparatus of claim 1 wherein said remote ends of said ultimate boom and lever are connected with a pivotally mounted link to maintain parallelogram relationship and said work tool comprises a pivotally mounted digger; said digger being pivotally connected with at least one of said remote ends of said ultimate boom and lever and said pivotally mounted links; and wherein an extensible means is connected intermediate said digger and at least one of said ultimate boom and lever for tilting said digger.
Claim 11
Dependent Claim
62 words
The extensible apparatus of claim 1 wherein said work tool comprises a pincer tool having a pair of pivotally connected jaws for gripping; said remote ends of said ultimate boom and lever are connected with one jaw and an extensible means for extending and retracting its connected end intermediate said jaws for effecting opening and closing of said jaws of said pincer.
Claim 12
Dependent Claim
20 words
The extensible boom apparatus of claim 1 wherein said extensible means of elements d and f comprise fluid powered rams.
Claim 13
Dependent Claim
15 words
The extensible apparatus of claim 11 wherein said fluid powered rams comprise hydraulically operated rams.
Claim 14
Dependent Claim
58 words
The extensible apparatus of claim 1 wherein said means for connecting the work tool includes a short lever that is connected with both said remote ends of said ultimate boom and ultimate lever so as to keep a parallelogram relationship therebetween and also has a pivot connection point at its remote end for connection with said work tool.
Claim 15
Dependent Claim
527 words
An extensible apparatus adaptable for employing an end-use work tool for one of a multiple purposes and comprising: a. a base; b. a main support structure fixedly connected to said base; c. at least one pair of respective first boom and first lever having their respective near ends pivotally connected with said support structure such that they can be pivoted to change their angle of support; said first boom having a remote lever pivot point near its remote end for connection with a subsequent lever; said first lever having a remote lever pivot point for connection with an intermediate fulcrum pivot point connection of a subsequent lever and having intermediate said near end and said remote pivot point an intermediate boom pivot point for connection with a subsquent boom; d. extensible means for changing said angle of support of said first boom and first lever for effecting the extension and retraction of said extensible apparatus; e. a plurality of extension units connected to said first boom and lever, each said extension unit comprising a next lever and next parallel boom; the boom being pivotally connected at its near end with the respective boom pivot point of the immediately preceding lever and near the remote end thereof, and having a remote lever pivot point that is pivotally connected at its remote end with the respective near end of the next connected lever; the next lever being pivotally connected at its near end with said remote end of the respective immediately preceding boom, having a near lever pivot point that is connected to the remote end of the preceding lever, having a remote boom pivot point that is connected to the respective next boom and a remote lever pivot point that is connected to the next succeeding lever; the sequential levers following the first lever having substantially the same length between a near end pinning point, to near lever pivot point to remote boom pivot, to remote end lever pivot point and wherein all booms exclusive of said first boom have substantially the same length between the near end pinning point and the remote end pinning point; the remote end of all levers at the remote end lever pivot point being maintained nearer to the work tool at all positions than the near end pivot point and nearer to the work tool than the boom pivot points on the levers whereby load leverage moments are equalized at all pinning points, thus preventing overloading and lockup and whereby warehousing and assembly are facilitated; f. an ultimate lever having a near end pivotally connected with said remote lever pivot point of the immediately preceding boom, having a remote end work tool pivot connection point for connection with the work tool and having an intermediate fulcrum pivot point connected with the remote lever pivot point of the preceding lever; g. an ultimate boom having a near end pivotally connected with said intermediate boom pivot point of an immediately preceding lever and having remote end work tool pivot connection for connection with the work tool; and h. means for connecting the work tool with said remote ends of said ultimate boom and lever.
Claim 16
Dependent Claim
527 words
An extensible apparatus adaptable for employing an end-use work tool for one of a multiple purposes and comprising: a. a base; b. a main support structure fixedly connected to said base; c. at least one pair of respective first boom and first lever having their respective near ends pivotally connected with said support structure such that they can be pivoted to change their angle of support; said first boom having a remote lever pivot point near its remote end for connection with a subsequent lever; said first lever having a remote lever pivot point for connection with an intermediate fulcrum pivot point connection of a subsequent lever and having intermediate said near end and said remote pivot point an intermediate boom pivot point for connection with a subsquent boom; d. extensible means for changing said angle of support of said first boom and first lever for effecting the extension and retraction of said extensible apparatus; e. a plurality of extension units connected to said first boom and lever, each said extension unit comprising a next lever and next parallel boom; the boom being pivotally connected at its near end with the respective boom pivot point of the immediately preceding lever and near the remote end thereof, and having a remote lever pivot point that is pivotally connected at its remote end with the respective near end of the next connected lever; the next lever being pivotally connected at its near end with said remote end of the respective immediately preceding boom, having a near lever pivot point that is connected to the remote end of the preceding lever, having a remote boom pivot point that is connected to the respective next boom and a remote lever pivot point that is connected to the next succeeding lever; the sequential levers following the first lever having substantially the same length between a near end pinning point, to near lever pivot point to remote boom pivot, to remote end lever pivot point and wherein all booms exclusive of said first boom have substantially the same length between the near end pinning point and the remote end pinning point; the remote end of all levers at the remote end lever pivot point being maintained nearer to the work tool at all positions than the near end pivot point and nearer to the work tool than the boom pivot points on the levers whereby load leverage moments are equalized at all pinning points, thus preventing overloading and lockup and whereby warehousing and assembly are facilitated; f. an ultimate lever having a near end pivotally connected with said remote lever pivot point of the immediately preceding boom, having a remote end work tool pivot connection point for connection with the work tool and having an intermediate fulcrum pivot point connected with the remote lever pivot point of the preceding lever; g. an ultimate boom having a near end pivotally connected with said intermediate boom pivot point of an immediately preceding lever and having remote end work tool pivot connection for connection with the work tool; and h. means for connecting the work tool with said remote ends of said ultimate boom and lever.
Claim 17
Dependent Claim
39 words
The extensible apparatus of claim 14 wherein there are respective pairs of said respective booms and levers in all of said first booms and levers, next booms and levers of said extension units, and said ultimate booms and levers.
Claim 18
Dependent Claim
98 words
The extensible apparatus of claim 15 wherein said work tool comprises a cargo lift and said means for connecting the work tool comprise respective work tool booms and work tool levers connected intermediate said work tool and said ultimate levers and booms with said work tool boom being connected at its near end with said remote boom pivot point of the preceding lever and said work tool lever being pivotally connected at its near end with the preceding boom and having intermediate fulcrum pivot point that is connected with said remote lever pivot point of the preceding boom.
Claim 19
Dependent Claim
94 words
The extensible apparatus of claim 15 wherein said remote ends of said ultimate boom and lever are connected with a pivotally mounted link to maintain parallelogram relationships and said work tool comprises a pivotally mounted cargo lift fork means for lifting; said lift fork means being pivotally connected with at least one of said remote ends of said ultimate boom and lever and said pivotally mounted link; and wherein an extensible means is connected intermediate said lift fork means and at least one of said ultimate boom lever for tilting said lift fork means.
Claim 20
Dependent Claim
84 words
The extensible apparatus of claim 15 wherein said remote ends of said ultimate boom and lever are connected with a pivotally mounted link to maintain parallelogram relationship and said work tool comprises a pivotally mounted digger; said digger being pivotally connected with at least one of said remote ends of said ultimate boom and lever and said pivotally mounted link; and wherein an extensible means is connected intermediate said digger and at least one of said ultimate boom and lever for tilting said digger.
Claim 21
Dependent Claim
62 words
The extensible apparatus of claim 15 wherein said work tool comprises a pincer tool having a pair of pivotally connected jaws for gripping; wherein said remote ends of said ultimate boom and lever are connected with one jaw and an extensible means for extending and retracting is connected intermediate said jaws for effecting opening and closing of said jaws of said pincer.
Claim 22
Dependent Claim
62 words
The apparatus of claim 15 wherein said means for connecting the work tool includes a pair of short levers that are connected with both said remote ends of said respective pairs of ultimate boom and ultimate levers so as to keep a parallelogram relationship therebetween, and also has a pivot connection point at its remote end for connection with said work tool.
Claim 23
Dependent Claim
15 words
The extensible apparatus of claim 14 wherein said extensible means comprises a fluid powered ram.
Claim 24
Dependent Claim
16 words
The extensible apparatus of claim 21 wherein said fluid powered ram comprises a hydraulically operable ram.
Claim 25
Dependent Claim
73 words
The apparatus of claim 14 wherein a pivotal support structure is pivotally connected with said remote ends of said ultimate booms and levers; a second extensible means is provided for tilting said pivotally mounted support structure; wherein there are provided second respective pairs of first booms and levers, extension units with their respective booms and levers and respective pairs of ultimate booms and levers that are connected together for exceptional flexibility and reach.
Claim 26
Dependent Claim
609 words
A pivotally mounted, extensible apparatus adaptable for employing an end-use work tool for one of a multiple purposes, comprising: a. a lower base plate that is fixedly connected to a stable platform; b. a pivotally mounted upper base plate that is pivotally mounted on said lower base plate for 360° of rotation about a pivot shaft; c. means for attaining and maintaining a given azimuth in said 360° rotation of said upper base plate with respect to said lower base plate; d. a main support structure fixedly connected with said upper base plate; e. at least one pair of respective first booms and first levers having their respective near ends pivotally connected with said support structure such that they can be pivoted and their support angle changed with respect to said support structure; each said first boom having a remote lever pivot point adjacent its remote end for connection with a subsequent lever; each said first lever having a remote lever pivot point for connection with a near intermediate fulcrum point connection of a subsequent lever and having intermediate said near end and said remote pivot point a remote intermediate boom pivot point for connection with a subsequent boom; f. a plurality of extension units connected with said first levers and booms; each said extension unit comprising respective pairs of next levers and next booms, each said next boom being pivotally connected at its near end with the respective boom pivot point of the immediately preceding lever and near the remote end thereof, and having a remote lever pivot point that is pivotally connected at its remote end with the respective near end of the next connected lever, the next lever being pivotally connected at its near end with the remote end of the respective immediately preceding boom, having a near lever pivot point that is connected to the remote end of the immediately preceding lever, having a remote boom pivot point that is connected to the respective next boom and a remote lever pivot point that is connected to the next succeeding lever; the sequential levers following the first lever having substantially the same length between a near end pinning point, to near lever pivot point, to remote boom pivot point, to remote end lever pivot point and wherein all booms exclusive of said first boom have substantially the same length between the near end pinning point and the remote end pinning point, the remote end of all levers at the remote end lever pivot point being maintained nearer to the work tool at all positions than the near end pivot point of the same lever and nearer to the work tool than the boom pivot points on the levers; whereby load leverage moments are equalized at all pinning points; whereby lockup of extensible apparatus is prevented; and warehousing and assembly are facilitated; g. extensible means for pivoting said first boom and lever for changing their angle with respect to said support structure; h. at least one pair of ultimate levers each having a near end pivotally connected with said remote lever pivot point of the preceding boom, having a remote end work tool pivot connection point for connection with the work tool and having intermediate fulcrum pivot point connected with said remote lever pivot point of the preceding lever; i. at least one pair of ultimate booms, each having a near end pivotally connected with said intermediate boom pivot point of an immediately preceding lever and having a remote end work tool pivot connection for connection with the work tool; and j. means for connecting the work tool with remote ends of said ultimate boom and lever.
Claim 27
Dependent Claim
609 words
A pivotally mounted, extensible apparatus adaptable for employing an end-use work tool for one of a multiple purposes, comprising: a. a lower base plate that is fixedly connected to a stable platform; b. a pivotally mounted upper base plate that is pivotally mounted on said lower base plate for 360° of rotation about a pivot shaft; c. means for attaining and maintaining a given azimuth in said 360° rotation of said upper base plate with respect to said lower base plate; d. a main support structure fixedly connected with said upper base plate; e. at least one pair of respective first booms and first levers having their respective near ends pivotally connected with said support structure such that they can be pivoted and their support angle changed with respect to said support structure; each said first boom having a remote lever pivot point adjacent its remote end for connection with a subsequent lever; each said first lever having a remote lever pivot point for connection with a near intermediate fulcrum point connection of a subsequent lever and having intermediate said near end and said remote pivot point a remote intermediate boom pivot point for connection with a subsequent boom; f. a plurality of extension units connected with said first levers and booms; each said extension unit comprising respective pairs of next levers and next booms, each said next boom being pivotally connected at its near end with the respective boom pivot point of the immediately preceding lever and near the remote end thereof, and having a remote lever pivot point that is pivotally connected at its remote end with the respective near end of the next connected lever, the next lever being pivotally connected at its near end with the remote end of the respective immediately preceding boom, having a near lever pivot point that is connected to the remote end of the immediately preceding lever, having a remote boom pivot point that is connected to the respective next boom and a remote lever pivot point that is connected to the next succeeding lever; the sequential levers following the first lever having substantially the same length between a near end pinning point, to near lever pivot point, to remote boom pivot point, to remote end lever pivot point and wherein all booms exclusive of said first boom have substantially the same length between the near end pinning point and the remote end pinning point, the remote end of all levers at the remote end lever pivot point being maintained nearer to the work tool at all positions than the near end pivot point of the same lever and nearer to the work tool than the boom pivot points on the levers; whereby load leverage moments are equalized at all pinning points; whereby lockup of extensible apparatus is prevented; and warehousing and assembly are facilitated; g. extensible means for pivoting said first boom and lever for changing their angle with respect to said support structure; h. at least one pair of ultimate levers each having a near end pivotally connected with said remote lever pivot point of the preceding boom, having a remote end work tool pivot connection point for connection with the work tool and having intermediate fulcrum pivot point connected with said remote lever pivot point of the preceding lever; i. at least one pair of ultimate booms, each having a near end pivotally connected with said intermediate boom pivot point of an immediately preceding lever and having a remote end work tool pivot connection for connection with the work tool; and j. means for connecting the work tool with remote ends of said ultimate boom and lever.
Claim 28
Dependent Claim
91 words
The pivotally mounted extensible apparatus of claim 24 wherein a pivotally mounted support structure is pivotally mounted on said main support structure and is connected with at least one of said near ends of said first boom and lever such that pivoting said pivotally mounted support structure can change the respective angle of support of said first boom and first lever; and wherein a pivoting extensible means is provided for pivoting said pivotally mounted support structure so as to change its angle of support of said first boom and first lever.
Claim 29
Dependent Claim
22 words
The extensible apparatus of claim 25 wherein there are respective pairs of respective first booms and levers and ultimate booms and levers.
Claim 30
Dependent Claim
96 words
The pivotally mounted extensible apparatus of claim 26 wherein said remote ends of said ultimate boom and lever are connected with a pivotally mounted link to maintain parallelogram relationships and said work tool comprises a pivotally mounted cargo lift fork means for lifting; said lift fork means being pivotally connected with at least one of said remote ends of said ultimate boom and lever and said pivotally mounted link; and wherein an extensible means is connected intermediate said lift fork means and at least one of said ultimate boom lever for tilting said lift fork means.
Claim 31
Dependent Claim
86 words
The pivotally mounted extensible apparatus of claim 26 wherein said remote ends of said ultimate boom and lever are connected with a pivotally mounted link to maintain parallelogram relationship and said work tool comprises a pivotally mounted digger; said digger being pivotally connected with at least one of said remote ends of said ultimate boom and lever and said pivotally mounted link; and wherein an extensible means is connected intermediate said digger in at least one of said ultimate booms and levers for tilting said digger.
Claim 32
Dependent Claim
64 words
The pivotally mounted extensible apparatus of claim 26 wherein said work tool comprises a pincer tool having a pair of pivotally connected jaws for gripping; wherein said remote ends of said ultimate boom and lever are connected with one jaw and an extensible means for extending and retracting is connected intermediate said jaws for effecting opening and closing of said jaws of said pincer.
Claim 33
Dependent Claim
17 words
The pivotally mounted extensible apparatus of claim 26 wherein said extensible means comprises a fluid powered ram.
Claim 34
Dependent Claim
16 words
The extensible apparatus of claim 30 wherein said fluid powered ram comprises a hydraulically operable ram.
Claim 35
Dependent Claim
73 words
The apparatus of claim 26 wherein a pivotal support structure is pivotally connected with said remote ends of said ultimate booms and levers; a second extensible means is provided for tilting said pivotally mounted support structure; wherein there are provided second respective pairs of first booms and levers, extension units with their respective boom and levers and respective pairs of ultimate booms and levers that are connected together for exceptional flexibility and reach.
Claim 36
Dependent Claim
70 words
The pivotally mounted extensible apparatus of claim 26 wherein said means for connecting the work tool includes a short lever at each end that is connected with both said remote ends of said respective pairs of ultimate boom and ultimate levers so as to keep a parallelogram linkage relationship therebetween and each short lever also has a pivot connection point at each remote end for connection with said work tool.
Claim 37
Dependent Claim
61 words
The pivotally mounted extensible apparatus of claim 24 wherein the 360° of rotation capability is effected by a 360° pinion rack and an engaging pinion gear powered by a fluid powered motor; one of said 360° pinion rack and the engaging pinion gear being connected with said lower base plate and the other thereof being connected with said upper base plate.
Claim 38
Dependent Claim
19 words
The pivotally mounted extensible apparatus of claim 34 wherein said fluid powered motor comprises a hydraulically powered hydrostatic motor.
Claim 39
Dependent Claim
38 words
The extensible boom of claim 1 or 14 or 24 wherein the extensible means includes an extensible means coupled between a pair of lever sections such that when activated will effect extension or retraction of the extensible apparatus.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |