Patent US4287623A successfully refreshed from Google Patents.
US4287623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency rescue axe device
Assignee: TARRAN CARRIE
•
Filing: 1979-03-23
•
Granted: 1981-09-08
•
Expires: 1999-03-23
Abstract
Abstract A combination tool is disclosed particularly suitable for emergency rescue applications, generally composed of two pivotally connected elongate handle members having an axe head and pick head mounted respectively thereon. The handle members may be locked together to be used as a composite structure, scissored apart to perform a variety of wire cutting and clamping functions, or alternatively separated from one another to be used independently. A plurality of head attachments are additionally disclosed which may be selectively mounted onto the axe head member to adapt the tool for use as a spade, hoe, hewing adz, basher, metal cutter, strap wrench, pipe wrench, and various other tools. The head attachments are mounted to the axe head member by a rotatable locking member which provides a quick connect and disconnect means for securing the attachments to the device. A holster, shoulder strap, and shoulder harness are utilized to carry the combination tool and head attachments upon a user. These are also adapted to serve as a boatswain's chair.
Inventors
- 👤 Phil K. Tarran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:59
CPC Classifications
B; B26; B26B; B26B23/00; B23; B23D; B23D29/00; B23D29/02; B25; B25F; B25F1/00; B25F1/006; B25F1/02; A; A62; A62B; A62B3/00; A62B3/005
Claims Analysis
Total Claims: 88
Claim 1
Independent Claim
238 words
In a combination tool kit, including an axe head mounted upon an elongated axe handle and a pick head mounted upon an elonged pick handle, wherein said pick head is mountable to said axe head by means permitting said axe head and axe handle and said pick head and pick handle to be used (a) independently of each other, (b) as a composite structure (c) sissored relative to one another and (d) oriented in an end-for-end, substantially linear, configuration, said combination tool kit comprising: (a) a recess in said axe head having a fixed pivot pin for releasably pivotally mounting said pick head; (b) a lock means rotatably mounted upon said axe head for movement wherein a portion of said lock means selectively extends within said recess so that said lock means locks said axe head and axe handle and said pick head and pick handle together when said pick head is pivotally mounted on said axe head; and (c) lock apperture means formed on said pick head, having a shape complimentary to said portion of said lock means, said portion of said lock means engaging said lock apperture means when said portion extends within said recess when said pick head is pivotally mounted on said axe head so that said pick head and pick handle are securely locked to said axe head and axe handle without the use of auxiliary tools or mounting bolts or screw fastners.
Claim 2
Dependent Claim
238 words
In a combination tool kit, including an axe head mounted upon an elongated axe handle and a pick head mounted upon an elonged pick handle, wherein said pick head is mountable to said axe head by means permitting said axe head and axe handle and said pick head and pick handle to be used (a) independently of each other, (b) as a composite structure (c) sissored relative to one another and (d) oriented in an end-for-end, substantially linear, configuration, said combination tool kit comprising: (a) a recess in said axe head having a fixed pivot pin for releasably pivotally mounting said pick head; (b) a lock means rotatably mounted upon said axe head for movement wherein a portion of said lock means selectively extends within said recess so that said lock means locks said axe head and axe handle and said pick head and pick handle together when said pick head is pivotally mounted on said axe head; and (c) lock apperture means formed on said pick head, having a shape complimentary to said portion of said lock means, said portion of said lock means engaging said lock apperture means when said portion extends within said recess when said pick head is pivotally mounted on said axe head so that said pick head and pick handle are securely locked to said axe head and axe handle without the use of auxiliary tools or mounting bolts or screw fastners.
Claim 3
Dependent Claim
122 words
The combination tool kit of claim 1 further comprising a plurality of head attachments independently mountable upon said axe head for providing additional tool functions such as bashing, adz-hewing, metal cutting, and hoeing, and wherein each of said plurality of head attachments includes a lock apperture means formed on said head attachments having a shape complimentary to said portion of said lock means, said portion of said lock means engaging said lock apperture means when said portion extends within said recess when any of said plurality of head attachments is respectively pivotally mounted on said axe head so that said head attachments are respectfully securely locked to said axe head without the use of auxiliary tools or mounting bolts or screw fastners.
Claim 4
Dependent Claim
82 words
The combination tool kit of claim 2 wherein said recess of said axe head includes a formed rear wall and wherein each of said pick head and plurality of head attachments respectively includes a heel complimentary to said rear wall, said heel abutting said rear wall when any of the said pick head or plurality of head attachments is respectively mounted on said axe head, wherein impact received by said pick head or head attachments respectively is imparted to said rear wall.
Claim 5
Dependent Claim
30 words
The combination tool kit of claim 2 wherein said lock means additionally lines and orients each of said pick and said head attachments when respectively mounted upon said axe head.
Claim 6
Dependent Claim
34 words
The combination tool kit of claim 2 wherein said lock means comprises a substantially rectangular-shaped member pivotally mounted about a pivot axis laterally spaced from said recess and perpendicular to said fixed pivot pin.
Claim 7
Dependent Claim
24 words
The combination tool kit of claim 5 wherein said pivot axis is oriented substantially parallel to said elongate handle mounted to said axe head.
Claim 8
Dependent Claim
21 words
The combination tool kit of claim 5 wherein said portion of said lock member comprises one end of said lock member.
Claim 9
Dependent Claim
20 words
The combination tool kit of claim 7 wherein said end of said lock member includes a pair of beveled sidewalls.
Claim 10
Dependent Claim
31 words
The combination tool kit of claim 8 wherein said lack aperture means comprises a mounting aperture formed on an edge of each of said pick head and said plural head attachments.
Claim 11
Dependent Claim
44 words
The combination tool kit of claim 5 wherein said axe head additionally includes a pin member biased against said lock member, said pin member selectively engaging a pair of apertures formed in said lock member to provide a detent mechanism for said lock member.
Claim 12
Dependent Claim
22 words
The combination tool kit of claim 10 wherein said lock detent mechanism maintains said lock member in engagement with said aperture means.
Claim 13
Dependent Claim
160 words
In a combination tool kit including a first tool head and a second tool head, each mounted respectively to an elongated handle, said second tool head independently mountable to said first tool head by means permitting said handles to be used (a) independently of each other (b) as a composite handle structure (c) sissored relative to one another and (d) oriented in an end, substantially linear, configuration, plural head attachments separately and independently mountable upon said first tool head for providing additional tool functions such as bashing, adz-hewing, metal cutting and hoeing, said combination tool comprising: (a) a recess in said first tool head including means for releasably, pivotally mounting any of said second tool head or plural head attachments; and (b) common lock means mounted upon said first tool head for separately locking any of said second tool head or plural head attachments upon said first tool head without the use of auxiliary tools or bolts or screw fastners.
Claim 14
Dependent Claim
160 words
In a combination tool kit including a first tool head and a second tool head, each mounted respectively to an elongated handle, said second tool head independently mountable to said first tool head by means permitting said handles to be used (a) independently of each other (b) as a composite handle structure (c) sissored relative to one another and (d) oriented in an end, substantially linear, configuration, plural head attachments separately and independently mountable upon said first tool head for providing additional tool functions such as bashing, adz-hewing, metal cutting and hoeing, said combination tool comprising: (a) a recess in said first tool head including means for releasably, pivotally mounting any of said second tool head or plural head attachments; and (b) common lock means mounted upon said first tool head for separately locking any of said second tool head or plural head attachments upon said first tool head without the use of auxiliary tools or bolts or screw fastners.
Claim 15
Dependent Claim
39 words
The combination tool kit as recited in claim 12 further comprising a means for carrying said first tool head and handle mounted to such second tool head and handle and a holster for carrying said plurality of head attachments.
Claim 16
Dependent Claim
34 words
The combination tool kit of claim 12 wherein said common locking means additionally maintains the orientation of the second tool head and said plural head attachments when respectively mounted to said first tool head.
Claim 17
Dependent Claim
21 words
The combination tool kit of claim 12 wherein said head attachments include a flange adapted to be received within said recess.
Claim 18
Dependent Claim
86 words
The combination tool kit of claim 15 wherein said locking means comprises a lock member fixed on said first tool head and rotatably mounted for movement wherein a portion of said lock member selectively extends within said recess, and said flange includes aperture means having a shape complimentary to said portion of said lock member, said portion of said lock member engaging said aperture means when said portion extends within said recess to securely lock said head attachments when respectively mounted to said first tool head.
Claim 19
Dependent Claim
28 words
The combination tool kit of claim 16 wherein said lock member is rotatably mounted within an aperture formed on said first tool head and communicating with said recess.
Claim 20
Dependent Claim
114 words
The combination tool kit of claim 13, wherein said carrying means includes a shoulder strap for carrying said combination tool upon a user comprising: a first strap member adapted to be worn intermediate its length about the shoulder of a user and including means for releasably supporting a holster adjacent both ends; and a second strap member connected to said first strap member at one end and including loop means at its other end for receiving one end of said combination tool, said strap members, when worn, being disposed on opposite sides of a user to support holster and said combination tool on said user at a location least restrictive to the user's movement.
Claim 21
Dependent Claim
37 words
The combination tool kit of claim 18 wherein said first strap member includes a mounting ring adjacent the interconnection between said first and second strap members, said strap means supporting the other end of said combination tool.
Claim 22
Dependent Claim
21 words
The combination tool kit of claim 19 wherein said combination tool is carried in a substantially vertical orientation upon said user.
Claim 23
Dependent Claim
22 words
The combination tool kit of claim 20 wherein said first and second strap members may be arranged to form a boatswain's chair.
Claim 24
Dependent Claim
107 words
The combination tool kit of claim 13, wherein such carrying means includes a shoulder harness for carrying said combination tool upon a user comprising: a first and second strap member interconnected to form a criss-crossing loop configuration, a portion of said loop adapted to be worn about the shoulders of a user; and means formed on opposite ends of each strap member for receiving one end of said combination tool and supporting a holster, respectively, said means formed on said strap members extending on opposite sides of said user when worn, to support said holster and said combination tool at a location least restrictive to said user.
Claim 25
Dependent Claim
34 words
The combination tool kit of claim 22 wherein said first and second strap members are interconnected by a detachable strap segment, said strap segment including means for adjusting said strap members upon said user.
Claim 26
Dependent Claim
25 words
The combination tool kit of claim 23 wherein said second strap member includes a retainer ring which receives the other end of said combination tool.
Claim 27
Dependent Claim
21 words
The combination tool kit of claim 24 wherein said combination tool is disposed in a substantially vertical orientation upon said user.
Claim 28
Dependent Claim
19 words
The combination tool kit of claim 25 wherein said strap members may be adapted to form a boatswain's chair.
Claim 29
Dependent Claim
99 words
The combination tool kit of claim 13, wherein said holster includes: an elongate flexible base member; a pair of cover members attached to said flexible base member adjacent opposite ends and raised from the surface of said base member to define a pair of compartments, each compartment sized to slidingly receive at least one of said head attachments therein; and a pair of preferential fold lines formed on said base member intermediate said cover members, said fold lines permitting said base member to be folded over upon itself whereby said compartments reside on the interior of said base member.
Claim 30
Dependent Claim
26 words
The combination tool kit of claim 27 wherein at least one of said compartments include divider means to segregate said compartments into plural tool receiving pockets.
Claim 31
Dependent Claim
35 words
The combination tool kit of claim 27 wherein said base member includes an aperture which receives a portion of one of said tool attachments to allow said base member to be folded over upon itself.
Claim 32
Dependent Claim
24 words
The combination tool kit of claim 27 wherein said base member includes fastening means for maintaining said base member in said folded over configuration.
Claim 33
Dependent Claim
25 words
The combination tool kit of claim 27 wherein said base member includes means for releasably mounting a plurality of belts arranged in a stacked configuration.
Claim 34
Dependent Claim
27 words
The combination tool kit of claim 27 wherein said base member includes means for releasably mounting a carrying strap positioned on one side of said base member.
Claim 35
Dependent Claim
21 words
The combination tool kit of claim 27 wherein one of said compartments is sized to receive a spade tool head attachment.
Claim 36
Dependent Claim
33 words
The combination tool kit of claim 28 wherein said one of said compartments is sized to receive a metal cutter head attachment and a basher-adz head attachment on opposite sides of said divider.
Claim 37
Dependent Claim
168 words
In a combination tool comprising an elongate handle member, a tool head mounted adjacent one end of said handle member, and a plurality of tool members, each adapted to be removably attached upon said tool head, a locking means for releasably mounting said tool members to said tool head comprising: a recess formed in said tool head adapted to receive a flange formed on each of said tool members said flange additionally includes a pivot slot formed on an edge of said flange, said pivot slot engaging a mounted pin formed in said recess in said tool head; a lock member fixed on said tool head and rotatably mounted for movement wherein a portion of said lock member selectively extends within said recess; and aperture means formed on said flange having a shape complimentary to said portion of said lock member, said portion of said lock member engaging said aperture means when the portion extends within said recess to securely lock said tool member to said tool head.
Claim 38
Dependent Claim
168 words
In a combination tool comprising an elongate handle member, a tool head mounted adjacent one end of said handle member, and a plurality of tool members, each adapted to be removably attached upon said tool head, a locking means for releasably mounting said tool members to said tool head comprising: a recess formed in said tool head adapted to receive a flange formed on each of said tool members said flange additionally includes a pivot slot formed on an edge of said flange, said pivot slot engaging a mounted pin formed in said recess in said tool head; a lock member fixed on said tool head and rotatably mounted for movement wherein a portion of said lock member selectively extends within said recess; and aperture means formed on said flange having a shape complimentary to said portion of said lock member, said portion of said lock member engaging said aperture means when the portion extends within said recess to securely lock said tool member to said tool head.
Claim 39
Dependent Claim
19 words
The combination tool of claim 35 wherein said locking means additionally orients said head attachments upon said tool head.
Claim 40
Dependent Claim
26 words
The combination tool of claim 35 wherein said lock member is rotatably mounted within an aperture formed on said tool head and communicating with said recess.
Claim 41
Dependent Claim
19 words
The combination of claim 37 wherein said lock member is mounted about an axis disposed perpendicular across said aperture.
Claim 42
Dependent Claim
20 words
The combination tool of claim 38 wherein said portion of said lock member comprises one end of said lock member.
Claim 43
Dependent Claim
20 words
The combination tool of claim 39 wherein said one end of said lock member includes a pair of beveled sidewalls.
Claim 44
Dependent Claim
38 words
The combination tool of claim 40 wherein said aperture means comprises a mounting aperture formed on at least one edge of said flange, said aperture including tapered sidewalls which tightly receive said beveled sidewalls of said lock member.
Claim 45
Dependent Claim
48 words
The combination tool of claim 41 wherein said flange includes plural mounting apertures and pivot slots along opposite edges, said plural apertures and slots oriented relative one another to form discrete mounting pairs which permit said tool members to be positioned upon said tool head in varying orientations.
Claim 46
Dependent Claim
99 words
A combination tool comprising: a pair of elongate handle members; a first tool head attached adjacent one end of one of said handle members; a second tool head attached adjacent one end of the other one of said handle members, said second tool heads pivotally moutable to a fixed pivot pin within a recess on said first head to permit said handle members to be scissored apart; and locking means rotatably mounted on said first tool head for releasably locking said first and second tool heads together such locking means rotatable about an axis perpendicular to said pivot pin.
Claim 47
Dependent Claim
99 words
A combination tool comprising: a pair of elongate handle members; a first tool head attached adjacent one end of one of said handle members; a second tool head attached adjacent one end of the other one of said handle members, said second tool heads pivotally moutable to a fixed pivot pin within a recess on said first head to permit said handle members to be scissored apart; and locking means rotatably mounted on said first tool head for releasably locking said first and second tool heads together such locking means rotatable about an axis perpendicular to said pivot pin.
Claim 48
Dependent Claim
16 words
The combination tool of claim 43 wherein said handle members are each substantially an I-beam member.
Claim 49
Dependent Claim
25 words
The combination tool of claim 44 wherein each of said I-beam members include a plastic insert on opposite sides of the web of said I-beam.
Claim 50
Dependent Claim
17 words
The combination tool of claim 43 wherein said handle members are electrically isolated from said tool heads.
Claim 51
Dependent Claim
36 words
The combination tool of claim 43 wherein said one of said handle membes include second locking means formed on the other end of said handle member, said second locking means releasably locking said handle members together.
Claim 52
Dependent Claim
32 words
The combination tool of claim 47 wherein said second locking means comprises a latch member including an extending tab, reciprocable axially upon said handle member to engage both of said handle members.
Claim 53
Dependent Claim
42 words
The combination tool of claim 47 wherein said second locking means comprises a spring clip, rotatable upon said one of said handle members to selectively engage said one of said handle members to selectively engage said other one of said handle members.
Claim 54
Dependent Claim
15 words
The combination tool of claim 43 wherein said first tool head comprises an axe head.
Claim 55
Dependent Claim
15 words
The combination tool of claim 43 wherein said second tool head comprises a pick head.
Claim 56
Dependent Claim
32 words
The combination tool of claim 50 or claim 51 wherein said heads include a projecting point adjacent one edge which allow said handle members to be utilized as a self-extricating ledge hanger.
Claim 57
Dependent Claim
90 words
A combination tool comprising: a pair of pivotally connected elongate handle members; a first tool head attached to one of said handle members; a second head attached to the other one of said handle members; and means formed on said first tool head for releasably locking said first and second tool heads together, said means permitting said handle members to extend in an end-for-end, substantially linear, orientation to form a rigid pry bar structure said means having a lock member engaging a mounting slot formed in said second tool head.
Claim 58
Dependent Claim
90 words
A combination tool comprising: a pair of pivotally connected elongate handle members; a first tool head attached to one of said handle members; a second head attached to the other one of said handle members; and means formed on said first tool head for releasably locking said first and second tool heads together, said means permitting said handle members to extend in an end-for-end, substantially linear, orientation to form a rigid pry bar structure said means having a lock member engaging a mounting slot formed in said second tool head.
Claim 59
Dependent Claim
27 words
The combination tool of claim 53 wherein said lock member positioned within an aperture formed on said first tool head to selectively engage said second tool head.
Claim 60
Dependent Claim
21 words
The combination tool of claim 54 wherein said lock member is rotatably mounted to said first tool head within said aperture.
Claim 61
Dependent Claim
21 words
The combination tool of claim 55 wherein said second tool head resides within a recess formed in said first tool head.
Claim 62
Dependent Claim
40 words
The combination tool of claim 55 wherein said second tool head is formed to tightly abut with a portion of said recess, said abutment distributing the forces generated on said combination tool between said lock member and said tool heads.
Claim 63
Dependent Claim
22 words
The combination tool of claim 53 wherein said other one of said handle members include a pry bar head at one end.
Claim 64
Dependent Claim
16 words
The combination tool of claim 58 wherein said pry bar head includes a self-contained prying fulcrum.
Claim 65
Dependent Claim
97 words
A combination tool kit comprising: (a) a handle member including a tool head adjacent one end; (b) a plurality of interchangeable tool members formed having a mounting flange; (c) a recess formed in said tool head having a fixed pivot pin transversely formed in said recess adapted for detachable pivotally mounting said mounting flange of any of said interchangeable tool members respectively; and (d) locking means disposed on said tool head, rotatably mounted for movement to selectively engage said flange within said recess, said engagement securely mounting one of said interchangeable tool members to said tool head.
Claim 66
Dependent Claim
97 words
A combination tool kit comprising: (a) a handle member including a tool head adjacent one end; (b) a plurality of interchangeable tool members formed having a mounting flange; (c) a recess formed in said tool head having a fixed pivot pin transversely formed in said recess adapted for detachable pivotally mounting said mounting flange of any of said interchangeable tool members respectively; and (d) locking means disposed on said tool head, rotatably mounted for movement to selectively engage said flange within said recess, said engagement securely mounting one of said interchangeable tool members to said tool head.
Claim 67
Dependent Claim
23 words
The combination tool of claim 60 wherein another one of said interchangeable tools comprises a pick head having a handle member attached thereto.
Claim 68
Dependent Claim
18 words
The combination tool kit of claim 60 wherein one of said interchangeable tool members comprises a metal cutter.
Claim 69
Dependent Claim
51 words
The combination tool kit of claim 62 wherein said metal cutter includes a cutting blade and a prying blade, said cutting blade including an increased thickness top edge which spreads the metal in the vicinity of the cutting blade to facilitate removal of re-insertion of the metal cutter into the metal.
Claim 70
Dependent Claim
18 words
The combination tool kit of claim 60 wherein another one of said interchangeable tools comprises a heavy basher.
Claim 71
Dependent Claim
14 words
The combination tool kit of claim 64 wherein said basher includes a adz-hewing member.
Claim 72
Dependent Claim
21 words
A combination tool kit of claim 65 wherein said adz-hewing member includes a V-shaped aperture adapted to form a spike puller.
Claim 73
Dependent Claim
29 words
The combination tool kit of claim 60 wherein another one of said tool members comprises a spade, said mounting flange of said spade having means for multiple mounting orientations.
Claim 74
Dependent Claim
18 words
The combination tool kit of claim 60 wherein another one of said tool members comprises a brush hook.
Claim 75
Dependent Claim
35 words
The combination tool kit of claim 68 wherein said brush hook includes a pair of cutting edges, one of said edges comprising a knife edge, the other of said edges comprising a serrated sawing edge.
Claim 76
Dependent Claim
18 words
The combination tool kit of claim 60 wherein another one of said tool members comprises a strap wrench.
Claim 77
Dependent Claim
18 words
The combination tool kit of claim 60 wherein another one of said tool members comprises a pipe wrench.
Claim 78
Dependent Claim
40 words
The combination tool kit of claim 60 wherein said flange is formed to engage said locking means at plural locations within said recess, said plural locations positioning said tool members at different orientations upon said one of said tool heads.
Claim 79
Dependent Claim
85 words
A combination tool comprising: a first handle member including an axe head mounted adjacent one end; a second handle member including a pick head mounted adjacent one end; pivot means for detachably mounting said axe and pick head together; and means for selectively locking said axe and pick heads about said pivot means, said means permitting said handle members to be selectively (a) locked together as a composite structure, (b) scizzored apart relative one another, and (c) rigidly interconnected in an end-for-end, substantially linear, orientation.
Claim 80
Dependent Claim
85 words
A combination tool comprising: a first handle member including an axe head mounted adjacent one end; a second handle member including a pick head mounted adjacent one end; pivot means for detachably mounting said axe and pick head together; and means for selectively locking said axe and pick heads about said pivot means, said means permitting said handle members to be selectively (a) locked together as a composite structure, (b) scizzored apart relative one another, and (c) rigidly interconnected in an end-for-end, substantially linear, orientation.
Claim 81
Dependent Claim
20 words
The combination tool of claim 73 wherein said locking means comprises a rotatable locking member disposed on said axe head.
Claim 82
Dependent Claim
19 words
The combination tool of claim 74 wherein said pick head resides within a recess formed in said axe head.
Claim 83
Dependent Claim
30 words
The combination tool of claim 75 wherein said axe head and pick include means formed thereon for cutting a cable when said handle members are scizzored apart relative one another.
Claim 84
Dependent Claim
22 words
The combination tool of claim 76 wherein said end-for-end, substantially linear, orientation provides an extended pry bar structure for said combination tool.
Claim 85
Dependent Claim
133 words
In a combination tool having an elongate handle member including a tool head mounted on one end, said tool head formed with a recess adjacent one end and including a pin disposed within said recess, interchangeable tool attachments adapted to be mounted upon said tool head comprising: a tool body formed to function as an individual tool implement; a mounting flange integrally connected to said tool body and adapted to be received within said recess; slot means formed adjacent one edge of said flange; and aperture means formed adjacent an opposite edge of said flange, said slot means engaging said pin disposed within said recess and said aperture means selectively receiving a portion of a lock member pivotally mounted on said tool head to rigidly mount said tool attachment to said tool head.
Claim 86
Dependent Claim
133 words
In a combination tool having an elongate handle member including a tool head mounted on one end, said tool head formed with a recess adjacent one end and including a pin disposed within said recess, interchangeable tool attachments adapted to be mounted upon said tool head comprising: a tool body formed to function as an individual tool implement; a mounting flange integrally connected to said tool body and adapted to be received within said recess; slot means formed adjacent one edge of said flange; and aperture means formed adjacent an opposite edge of said flange, said slot means engaging said pin disposed within said recess and said aperture means selectively receiving a portion of a lock member pivotally mounted on said tool head to rigidly mount said tool attachment to said tool head.
Claim 87
Dependent Claim
23 words
The combination tool of claim 78 wherein said aperture means is formed in a complimentary shape to said portion of said lock member.
Claim 88
Dependent Claim
32 words
The combination tool of claim 79 wherein said flange includes a plurality of said slot means and said aperture means to position said tool attachments at different locations upon said tool head.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |