Patent US3727734A successfully refreshed from Google Patents.
US3727734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bidirectional lever arm clutch
Assignee: Individual
•
Filing: 1972-03-29
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Granted: 1973-04-17
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Expires: 1992-03-29
Abstract
Abstract A bidirectionally rotatable mechanism for separately driving two unidirectionally rotatably driven devices is disclosed. The mechanism includes a bidirectionally driving external rim that encompasses a bidirectionally driven internal device that supports two oppositely axially aligned lever arms. The external rim is pin coupled to slots in the ends of the lever arms such that rotation of the external rim in the clockwise or counterclockwise direction rotates one or the other of the lever arms into axial alignment and also rotates the internal device in the like clockwise or counterclockwise direction. The one axially aligned lever arm then engages an associated unidirectionally rotatably driven member.
Inventors
- 👤 K Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:54
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/44; F; F16; F16D; F16D41/00; F16D41/12; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2133; Y10T74/2136
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
A bidirectionally rotatable mechanism for driving two unidirectionally rotatable elements, comprising: a bidirectionally rotatable external rim; a bidirectionally rotatable internal device having two diametrically opposed surfaces, said internal device internal to said external rim and rotatable about the same primary axis; first and second lever arms rotatably mounted on first and second ones, respectively, of said two diametrically opposed surfaces, said first and second lever arms being alternatively rotatable into substantial alignment with said primary axis but oppositely directioned; first and second coupling means affixed to said external rim for alternatively rotating said first and second lever arms, respectively, into substantial alignment and substantial misalignment, respectively, or vice versa, with said primary axis; first and second unidirectionally rotatable elements rotatable in opposite directions about said primary axis and located adjacent to opposite ends of said internal device, each of said first and second unidirectionally rotatable elements including associated stop means for alternatively engaging said first or said second lever arm when said first or said second lever arm is in its substantial axial alignment with said primary axis.
Claim 2
Dependent Claim
178 words
A bidirectionally rotatable mechanism for driving two unidirectionally rotatable elements, comprising: a bidirectionally rotatable external rim; a bidirectionally rotatable internal device having two diametrically opposed surfaces, said internal device internal to said external rim and rotatable about the same primary axis; first and second lever arms rotatably mounted on first and second ones, respectively, of said two diametrically opposed surfaces, said first and second lever arms being alternatively rotatable into substantial alignment with said primary axis but oppositely directioned; first and second coupling means affixed to said external rim for alternatively rotating said first and second lever arms, respectively, into substantial alignment and substantial misalignment, respectively, or vice versa, with said primary axis; first and second unidirectionally rotatable elements rotatable in opposite directions about said primary axis and located adjacent to opposite ends of said internal device, each of said first and second unidirectionally rotatable elements including associated stop means for alternatively engaging said first or said second lever arm when said first or said second lever arm is in its substantial axial alignment with said primary axis.
Claim 3
Dependent Claim
22 words
The mechanism of claim 1 in which said two diametrically opposed surfaces are flat, parallel surfaces equal distances from said primary axis.
Claim 4
Dependent Claim
25 words
The mechanism of claim 1 in which said first and second lever arms each have slotted ends for engaging said first and second coupling means.
Claim 5
Dependent Claim
27 words
The mechanism of claim 1 in which said first and second lever arms rotate in a plane parallel to their associated first and second diametrically opposed surfaces.
Claim 6
Dependent Claim
46 words
The mechanism of claim 1 in which said first unidirectionally rotatable element is mounted on a shaft that passes through said internal device and said second unidirectionally rotatable elemeNt for driving a third unidirectionally rotatable element on the far side of said second unidirectionally rotatable element.
Claim 7
Dependent Claim
58 words
The mechanism of claim 1 in which said first and second lever arms extend beyond the associated ends of said internal device and into said associated first and second unidirectionally rotatable elements for making contact with said associated stop means only when said first and second lever arms are alternatively rotated into substantial alignment with said primary axis.
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |