US3656597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free-running two way clutch
Assignee: Eastman Kodak Co
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Filing: 1970-08-20
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Granted: 1972-04-18
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Expires: 1990-08-20
Abstract
Abstract A free-running two way clutch having a drive element and a driven member and comprised of a plurality of rollers rotatable with the driving element and disposed against the inner periphery of a plurality of cam segments distributed about the driving element. The outer surfaces of the cam segments are brought into engagement with the driven member when a rotational motion is imparted to the rollers by the driving element. The symmetrical design of the cam segments permits bi-directional operation. An interface member having high static and low dynamic friction laterally abuts the cam segments. Engagement of the drive element and the driven member is facilitated because of the special frictional properties of the interface member.
Inventors
- 👤 Frank P Gruchmann
- 👤 Gordon F Connelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:08
CPC Classifications
F; F16; F16D; F16D41/00; F16D41/06; F16D41/08; F16D41/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
297 words
A two way clutch which comprises: a. a drive shaft mounted for rotation in either direction and having an axis; b. a driven member mounted for rotation in either direction; c. at least one cam member operative for rotatively coupling said rotatable drive shaft to said rotatable driven member, said one cam member having an inner and an outer peripheral surface each configured in the shape of an arc of a circle defined by a point said inner peripheral surface being disposed so that its point is disposed a greater distance from said inner peripheral surface then said drive shaft axis, said outer peripheral surface being disposed so that its center is disposed coincident with said drive shaft axis; d. at least one roller operably connected to said drive shaft, said roller being rotatable about said drive shaft axis and having a surface disposable against said inner periphery of said cam member; e. a disc having a surface abutting said cam member, said surface of said disc having a relatively high static friction for restraining angular movement of said cam member as said roller rotates during initial relatively low velocity rotation of said drive shaft to effect the relative movement of said roller along said inner peripheral surface and to thereby effect a radial outward movement of said cam member from said drive shaft axis so that said outer periphery of said cam member engages said driven member, said surface at said disc having a relatively low dynamic friction for providing a relatively small amount of retardation at relatively high velocity rotation of said cam member; f. means for mounting said disc in a fixed position relative to said drive shaft; and g. spring means disposed to bias said surface of said disc against said cam member
Claim 2
Dependent Claim
297 words
A two way clutch which comprises: a. a drive shaft mounted for rotation in either direction and having an axis; b. a driven member mounted for rotation in either direction; c. at least one cam member operative for rotatively coupling said rotatable drive shaft to said rotatable driven member, said one cam member having an inner and an outer peripheral surface each configured in the shape of an arc of a circle defined by a point said inner peripheral surface being disposed so that its point is disposed a greater distance from said inner peripheral surface then said drive shaft axis, said outer peripheral surface being disposed so that its center is disposed coincident with said drive shaft axis; d. at least one roller operably connected to said drive shaft, said roller being rotatable about said drive shaft axis and having a surface disposable against said inner periphery of said cam member; e. a disc having a surface abutting said cam member, said surface of said disc having a relatively high static friction for restraining angular movement of said cam member as said roller rotates during initial relatively low velocity rotation of said drive shaft to effect the relative movement of said roller along said inner peripheral surface and to thereby effect a radial outward movement of said cam member from said drive shaft axis so that said outer periphery of said cam member engages said driven member, said surface at said disc having a relatively low dynamic friction for providing a relatively small amount of retardation at relatively high velocity rotation of said cam member; f. means for mounting said disc in a fixed position relative to said drive shaft; and g. spring means disposed to bias said surface of said disc against said cam member
Claim 3
Dependent Claim
51 words
A two way clutch as defined in claim 1 wherein a plurality of rollers are rotatably connected to said drive shaft, each roller being disposed on said inner periphery of said cam member, the rotation of said rollers effecting the engagement of each of said cam members with said driven member.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |