US3712431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque device for winches and the like
Assignee: Individual
•
Filing: 1971-02-26
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Granted: 1973-01-23
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Expires: 1991-02-26
Abstract
Abstract Positive backstop type silent infinitely variable reciprocating to unidirectional motion converter in the form of improved winch embodiments, each having a winch drum constrained to rotate in a single direction with respect to a winch spindle on which it is mounted, the constraint being achieved by a silent positive backstop action of a first roller, sprag or spring clutch engaging the drum and spindle, each winch also including a lever receiving winch top structure mounted to rotate on the spindle and constrained by silent positive backstop action of a second roller, sprag or spring clutch engaging the top structure and winch drum to rotate with respect to the winch drum only in the opposite direction of the winch drum rotation.
Inventors
- 👤 I Versoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:39
CPC Classifications
F; F16; F16D; F16D41/00; B; B66; B66D; B66D1/00; B66D1/60; B66D1/74; B66D1/7421; B66D1/7484
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
217 words
In a backstop action type silent infinitely variable reciprocating to unidirectional motion converter, the combination of a cylindrical spindle having a cylindrical periphery symmetrical about a longitudinal axis, a first torque transmitting member fixed to said spindle, a second torque transmitting member mounted for rotation about said axis and having radially spaced from said periphery a cylindrical bore symmetrical about said axis, a first combined spring retainer and spacer with a plurality of sprag elements carried thereon between and in operative relation to said bore and periphery to effect backstop action with respect to relative motion in one direction between said spindle and second torque transmitting member for constraining said rotation with respect to said spindle to a single direction about said axis, a third torque transmitting member mounted for rotation about said axis and having a portion with a cylindrical periphery symmetrical about said axis, and a second combined spring retainer and spacer with a plurality of sprag elements carried thereon between and in operative relation to said bore and last mentioned periphery to effect backstop action with respect to relative motion in one direction between said third and second torque transmitting members for constraining said third torque transmitting member rotation with respect to said second torque transmitting member to a direction opposite said single direction.
Claim 2
Dependent Claim
217 words
In a backstop action type silent infinitely variable reciprocating to unidirectional motion converter, the combination of a cylindrical spindle having a cylindrical periphery symmetrical about a longitudinal axis, a first torque transmitting member fixed to said spindle, a second torque transmitting member mounted for rotation about said axis and having radially spaced from said periphery a cylindrical bore symmetrical about said axis, a first combined spring retainer and spacer with a plurality of sprag elements carried thereon between and in operative relation to said bore and periphery to effect backstop action with respect to relative motion in one direction between said spindle and second torque transmitting member for constraining said rotation with respect to said spindle to a single direction about said axis, a third torque transmitting member mounted for rotation about said axis and having a portion with a cylindrical periphery symmetrical about said axis, and a second combined spring retainer and spacer with a plurality of sprag elements carried thereon between and in operative relation to said bore and last mentioned periphery to effect backstop action with respect to relative motion in one direction between said third and second torque transmitting members for constraining said third torque transmitting member rotation with respect to said second torque transmitting member to a direction opposite said single direction.
Claim 3
Dependent Claim
46 words
The combination as in claim 1 wherein said cylindrical spindle has two ends, said first torque transmitting member is a winch base rigidly engaging one of said ends and adapted for mounting to a reference support, and said second torque transmitting member is a winch drum.
Claim 4
Dependent Claim
26 words
The combination as in claim 2 wherein said third torque transmitting member is adapted for receiving a lever for application of torque thereto about said axis.
Claim 5
Dependent Claim
39 words
The combination as in claim 2 wherein said third torque transmitting member is a winch top structure at said other end of said spindle and adapted for receiving a lever for manual application of torque thereto about said axis.
Claim 6
Dependent Claim
120 words
In a winch, the combination of an elongated spindle having two ends and a cylindrical periphery symmetrical about a longitudinal axis, a base rigidly engaging one of said ends and adapted for mounting said winch to a reference support, a winch drum having a cylindrical bore symmetrical about said axis and mounted on said spindle for rotation about said axis, and a combined spring retainer and spacer with a plurality of sprag elements carried thereon in said bore of said winch drum in operative relation to said periphery and bore to effect a backstopping relation to relative movement in one direction between said winch drum and spindle for providing confinement of said rotation to a single direction about said axis.
Claim 7
Dependent Claim
120 words
In a winch, the combination of an elongated spindle having two ends and a cylindrical periphery symmetrical about a longitudinal axis, a base rigidly engaging one of said ends and adapted for mounting said winch to a reference support, a winch drum having a cylindrical bore symmetrical about said axis and mounted on said spindle for rotation about said axis, and a combined spring retainer and spacer with a plurality of sprag elements carried thereon in said bore of said winch drum in operative relation to said periphery and bore to effect a backstopping relation to relative movement in one direction between said winch drum and spindle for providing confinement of said rotation to a single direction about said axis.
Claim 8
Dependent Claim
100 words
The combination as in claim 2 wherein said spindle has a larger diameter portion adjacent one end a smaller diameter portion adjacent the other end, said larger diameter spindle portion forms said periphery which is in operative relation to said first mentioned combined spring retainer and spacer and plurality of sprag elements, and said third torque transmitting member has a cylindrical sleeve surrounding said smaller diameter spindle portion for rotation about said axis, the periphery of said sleeve forming said cylindrical periphery which is in operative relation to said second combined spring retainer and spacer and plurality of sprag elements.
Claim 9
Dependent Claim
46 words
The combination as in claim 6 wherein said winch base is rigidly fixed to the spindle end adjacent the larger diameter spindle portion, and said third torque transmitting member is carried at the other spindle end by said cylindrical sleeve on said smaller diameter spindle portion.
Claim 10
Dependent Claim
31 words
The combination as in claim 7 having additionally sealing means between said relative moving members and positioned for preventing moisture from reaching said combined spring retainers and spacErs and sprag elements.
Claim 11
Dependent Claim
23 words
The combination as in claim 8 wherein said sealing means includes O ring sealing structures distal from respective sides of said sprag elements.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |