Patent US3779094A successfully refreshed from Google Patents.
US3779094A
Expired / Lapsed
US
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Reversing nut for a diamond thread screw
Assignee: Norco Inc
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Filing: 1972-06-12
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Granted: 1973-12-18
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Expires: 1992-06-12
Abstract
Abstract A reversing nut for use with a diamond thread screw having criss-crossed threads. The nut has an annular body and includes a through bore to receive the screw. A fixed pin extends part way into the bore for engagement with the screw threads. The nut is further provided with a pair of movable pins extending into the bore, also engageable with the screw threads. The movable pins are mounted on slide members which are carried by the nut, the slide members being movable between limiting or extreme positions in directions parallel to the axis of the nut. A reversal of the direction of travel of the nut can be effected at predetermined intervals along the length of the screw by moving one slide member and pin from one extreme position toward the other extreme position. During the transition, the pin being moved is disposed at an intersection of the criss-crossed threads and thus no interference therewith is encountered. In a similar manner, a reversal of the nut in the opposite direction is effected by movement of the same slide member and pin from its one extreme position toward the other extreme position. Means are provided for actuating the slide members and thus automatically reversing the direction of travel of the nut at both ends of the screw as well as at predetermined points therebetween. Alternatively, the nut can be held against axial travel, while the screw moves axially.
Inventors
- 👤 Barre B La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:00
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2247; F16H25/2261; F16H25/08; F16H25/12; F16H25/122; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
138 words
A reversing nut for use with a diamond thread screw having criss-crossed grooves comprising in combination: a. an annular body including a through bore to receive the screw, b. a thread-engaging pin, c. means mounting the pin against lateral movement thereof on the body, said pin extending into the body bore for engagement with the screw thread, d. a pair of movable pins carried by the body and extending into the bore thereof, and e. means mounting said movable pins on the body for lateral movement in directions parallel to the body axis whereby one or the other of said movable pins can be shifted from engagement with one groove wall to engagement with another groove wall of the screw, thereby to effect a change in the direction of travel of the nut with respect to the screw.
Claim 2
Dependent Claim
138 words
A reversing nut for use with a diamond thread screw having criss-crossed grooves comprising in combination: a. an annular body including a through bore to receive the screw, b. a thread-engaging pin, c. means mounting the pin against lateral movement thereof on the body, said pin extending into the body bore for engagement with the screw thread, d. a pair of movable pins carried by the body and extending into the bore thereof, and e. means mounting said movable pins on the body for lateral movement in directions parallel to the body axis whereby one or the other of said movable pins can be shifted from engagement with one groove wall to engagement with another groove wall of the screw, thereby to effect a change in the direction of travel of the nut with respect to the screw.
Claim 3
Dependent Claim
37 words
A reversing nut as in claim 1, wherein: a. said body has a longitudinal recess, and b. said movable pin mounting means comprises a slide member movable in said recess and carrying one of said movable pins.
Claim 4
Dependent Claim
37 words
A reversing nut as in claim 2, and further including: a. cooperable stop means carried on said body and slide member for limiting movement of the latter and said one pin carried thereby, between two extreme positions.
Claim 5
Dependent Claim
46 words
A reversing nut as in claim 3, wherein: a. said body has a slot, b. said stop means comprising a part connected with said one pin and extending through said slot, said part being engageable with the slot ends to restrict lateral movement of the pin.
Claim 6
Dependent Claim
43 words
A reversing nut as in claim 2 and further including: a. an additional movable pin, b. an additional slide member disposed in said recess and carrying said additional movable pin, and c. means interconnecting said slide members for simultaneous movements in said recess.
Claim 7
Dependent Claim
15 words
A reversing nut as in claim 5, wherein: a. said interconnecting means comprises a link.
Claim 8
Dependent Claim
43 words
A reversing nut as in claim 2 and further including: a. detent means carried on said body and engageable with said slide member for frictionally restraining the movement of the latter axailly with respect to said body, thereby to prevent inadvertent actuation thereof.
Claim 9
Dependent Claim
45 words
A reversing nut as in claim 7, wherein: a. said body has a socket communicating with said recess, b. said detent means comprising a ball movably carried in said socket, and comprising spring means in the socket for urging said ball against said slide member.
Claim 10
Dependent Claim
36 words
A reversing nut as in claim 8, wherein: a. said socket has internal screw threads, and b. a screw engaged with the threads of said socket and also engaging said spring means to effect adjustment thereof.
Claim 11
Dependent Claim
47 words
A reversing nut as in claim 2, wherein: a. said body has a second longitudinal recess spaced circumferentially thereon from said first-mentioned recess, b. said movable pin mounting means comprising a second slide member movable in said second recess and carrying the other of said movable pins.
Claim 12
Dependent Claim
66 words
A reversing nut as in claim 1, and further including: a. a screw disposed in the bore of the annular body and having criss-crossed grooves, and b. a pair of end collars rigidly mounted on opposite ends of said screw, said collars having sloped bearing surfaces engageable by said movable pins whereby the latter can be shifted laterally to automatically reverse the movement of the nut.
Claim 13
Dependent Claim
18 words
A reversing nut and screw as in claim 11, wherein: a. the sloped surfaces are of scalloped configuration.
Claim 14
Dependent Claim
52 words
A reversing nut as in claim 1, and further including: a. a screw disposed in the bore of the annular body and having criss-crossed grooves, b. a stationary abutment, and c. means cooperable with said abutment for automatically shifting one of said movable pins as said annular body travels along said screw.
Claim 15
Dependent Claim
34 words
A reversing nut and screw as in claim 13 and further including: a. means engageable with said screw, providing bearings therefor, b. said stationary abutment being connected to said bearing means for the screw.
Claim 16
Dependent Claim
114 words
A reversing nut as in claim 1, and further including: a. a screw disposed in the bore of the annular body and having criss-crossed grooves, b. means mounting the nut for turning while preventing its axial movement, c. a movable abutment, d. means mounting said abutment for movement in a path parallel to the axis of the nut body and screw, e. means responsive to turning of the nut and travel of the screw for shifting said abutment along its path of travel, and f. means acted on by said abutment during the movement thereof, for shifting one of said movable pins axially of the nut body to reverse the travel of the screw.
Claim 17
Dependent Claim
29 words
A reversing nut and screw as in claim 15, wherein: a. said shifting means responsive to the turning of the nut comprises said dscrew disposed in the nut bore.
Claim 18
Dependent Claim
56 words
A reversing nut and screw as in claim 16, wherein: a. said movable abutment comprises a collar affixed to said screw, and b. said means mounting one of said movable pins on the body comprises a carrier for said one pin, slidably mounted on the nut body and engageable by said collar to shift said Pin.
Claim 19
Dependent Claim
86 words
The invention as defined in claim 1, and further including: a. a screw disposed in the bore of the annular body and having criss-crossed grooves, b. the pitch of one of said grooves being different from the pitch of the other of said grooves, whereby for a given rate of relative rotation between the nut and the screw the axial rate of traversal of the nut along the screw in one direction is different from that of the nut when travelling axially in the opposite direction.
Claim 20
Dependent Claim
64 words
The invention as defined in claim 1, and further including: a. a screw disposed in the bore of the annular body and having criss-crossed grooves, b. said screw having at one end a segment of a groove characterized by zero pitch, communicating with the criss-crossed grooves and enabling the nut to dwell at said end of the screw for a portion of a revolution.
Claim 21
Dependent Claim
131 words
A reversing nut for use with a diamond thread screw having criss-crossed grooves, comprising in combination: a) an annular body including a through bore to receive the screw, b) a thread-engaging pin, c) means mounting the pin against lateral movement thereof on the body, said pin extending into the body bore for engagement with the screw thread, d) a movable pin carried by the body and extending into the bore thereof, and e) means mounting said movable pin on the body for lateral movement in directions parallel to the body axis, whereby said movable pin can be shifted from engagement with one groove wall to engagement with another groove wall of the screw, chereby to effect a change in the direction of travel of the nut with respect to the screw.
Claim 22
Dependent Claim
131 words
A reversing nut for use with a diamond thread screw having criss-crossed grooves, comprising in combination: a) an annular body including a through bore to receive the screw, b) a thread-engaging pin, c) means mounting the pin against lateral movement thereof on the body, said pin extending into the body bore for engagement with the screw thread, d) a movable pin carried by the body and extending into the bore thereof, and e) means mounting said movable pin on the body for lateral movement in directions parallel to the body axis, whereby said movable pin can be shifted from engagement with one groove wall to engagement with another groove wall of the screw, chereby to effect a change in the direction of travel of the nut with respect to the screw.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |