US3590661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for driving and for the accurate and stable positioning of rotary element
Assignee: LAMY D ETUDES ET DE RECH SOLER
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Filing: 1969-03-26
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Granted: 1971-07-06
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Expires: 1989-03-26
Abstract
Abstract The device according to the present invention comprises means for driving and positioning a rotary element whereby the latter is driven by at least one driving element in accordance with a cyclic program which can be performed in one or more revolutions of the driving element or elements and/or of the driven element, the device being adapted to operate in both directions of rotation, the program being composed, in succession and inalternation, of a homokinetic drive and of a nonhomokinetic drive, and the rotation of the driven element, measured by the rotation of the driving element, being any predetermined function of the program.
Inventors
- 👤 Roger Marcel Chaveneaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:06
CPC Classifications
F; F16; F16H; F16H27/00; F16H27/04; F16H27/08; Y; Y10; Y10T; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1441; Y10T74/18; Y10T74/18528; Y10T74/19; Y10T74/1987; Y10T74/19874; Y10T74/19879; Y10T74/19884; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
193 words
A device for driving and positioning rotary elements comprising cooperative rotatable driving means and driven means, said driven means including at least a pair of cam followers and a tooth segment, said driving means including a tooth segment aligned for meshing engagement with said driven means tooth segment during at least a portion of the rotation of said driving and driven means, said driving means further including a pair of cams aligned for contacting respective ones of said cam followers, a first of said cams having a lobe defining a pair of cam surface means for respective driving engagement with one of said cam followers during rotation of said driving means in a first direction and for positioning engagement with said same cam follower during rotation of said driving means in a second and opposite direction, and a second of said cams having a lobe defining a pair of cam surface means for respective driving engagement with the other of said cam followers during the rotation of said driving means in said second direction and for positioning engagement with said other cam follower during rotation of said driving means in said first direction.
Claim 2
Independent Claim
193 words
A device for driving and positioning rotary elements comprising cooperative rotatable driving means and driven means, said driven means including at least a pair of cam followers and a tooth segment, said driving means including a tooth segment aligned for meshing engagement with said driven means tooth segment during at least a portion of the rotation of said driving and driven means, said driving means further including a pair of cams aligned for contacting respective ones of said cam followers, a first of said cams having a lobe defining a pair of cam surface means for respective driving engagement with one of said cam followers during rotation of said driving means in a first direction and for positioning engagement with said same cam follower during rotation of said driving means in a second and opposite direction, and a second of said cams having a lobe defining a pair of cam surface means for respective driving engagement with the other of said cam followers during the rotation of said driving means in said second direction and for positioning engagement with said other cam follower during rotation of said driving means in said first direction.
Claim 3
Dependent Claim
33 words
The device as defined in claim 1 wherein one of said cams and cam followers are in a first plane and another of said cams and cam followers are in a second plane.
Claim 4
Dependent Claim
44 words
The device as defined in claim 1 wherein one of said cams and cam followers are in a first plane and another of said cams and cam followers are in a second plane, and said first and second planes are in parallel spaced relationship.
Claim 5
Dependent Claim
18 words
The device as defined in claim 1 wherein said cams and cam followers are in a common plane.
Claim 6
Dependent Claim
43 words
The device as defined in claim 1 wherein said first cam additionally has a second lobe contoured to the configuration of said second cam lobe, and said second cam additionally has a second lobe contoured to the configuration of said first cam lobe.
Claim 7
Dependent Claim
45 words
The device as defined in claim 1 wherein said tooth segments define a predetermined input-output gear ratio between said driving and driven means, and said driving and driven means include other aligned meshable tooth segments defining an input-output gear ratio different than said predetermined ratio.
Claim 8
Dependent Claim
50 words
The device as defined in claim 1 wherein said driving and driven means each has an axis of rotation, and one of said pair of cam followers is positioned on a side of a line between said axes opposite to that of the other of said pair of cam followErs.
Claim 9
Dependent Claim
26 words
The device as defined in claim 1 wherein means are provided for mounting said pair of cam followers upon teeth of said driven means tooth segment.
Claim 10
Dependent Claim
26 words
The device as defined in claim 2 wherein said tooth segments are in a third plane spaced from and parallel to said first and second planes.
Claim 11
Dependent Claim
41 words
The device as defined in claim 5 wherein one of said cams and cam followers are in a first plane and another of said cams and cam followers are in a second plane in spaced parallel relationship to said first plane.
References Cited (Backward Citations)
US1928925A
Cited
US1552598A
Cited
US2797589A
Cited
US2922505A
Cited
US2986949A
Cited
US3170333A
Cited
US3408877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |