US3678780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam assembly
Assignee: Electrical Remote Control Co Ltd
•
Filing: 1970-08-26
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Granted: 1972-07-25
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Expires: 1990-08-26
Abstract
Abstract A cam assembly includes a generally cylindrical central body formed with an external ring of teeth and encircled by two identical annular members each having two inwardly directed pawls resiliently engaging the teeth at circumferentially spaced locations. The annular members have profiled outer peripheral control surfaces for co-operating with a cam follower extending across both surfaces. To adjust the overall control surface, the annular members are manually turned about the body axis, the pawls riding over the teeth, and then the annular members are clamped to the body, while the pawls hold the annular members in position.
Inventors
- 👤 Ivor Ponting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:46
CPC Classifications
F; F16; F16H; F16H53/00; F16H53/02; F16H53/04; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/20654; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/2106; Y10T74/2133; Y10T74/2136; Y10T74/2138
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
A cam assembly comprising a generally cylindrical central body for rotation about an axis, an annular member encircling said body and said axis, said member having a profiled control surface for co-operating with a cam follower, and ratchet-andpawl means provided on said body and said member to hold said member adjustably in a selected angular position about said axis relative to said body, said ratchet-and-pawl means comprising a ring of teeth provided on the outer periphery of said body and encircling said axis, and an inwardly directed pawl resiliently carried by said annular member and selectively engaging said teeth.
Claim 2
Dependent Claim
99 words
A cam assembly comprising a generally cylindrical central body for rotation about an axis, an annular member encircling said body and said axis, said member having a profiled control surface for co-operating with a cam follower, and ratchet-andpawl means provided on said body and said member to hold said member adjustably in a selected angular position about said axis relative to said body, said ratchet-and-pawl means comprising a ring of teeth provided on the outer periphery of said body and encircling said axis, and an inwardly directed pawl resiliently carried by said annular member and selectively engaging said teeth.
Claim 3
Dependent Claim
31 words
A cam assembly according to claim 1, wherein said pawl comprises a tooth and a resilient arm extending arcuately around said outer periphery and connecting said tooth to said annular member.
Claim 4
Dependent Claim
50 words
A cam assembly according to claim 1, wHerein said ratchet-and-pawl means further comprises a second inwardly directed pawl resiliently carried by said annular member and selectively engaging said teeth, the two pawls engaging said teeth at respective first and second locations spaced apart around the outer periphery of said body.
Claim 5
Dependent Claim
79 words
A cam assembly according to claim 1, and further comprising another annular member encircling said body and said axis and mounted on said body for rotation therewith about said axis, said other annular member having another profiled control surface for co-operating with said cam follower, and another inwardly directed pawl resiliently carried by said other member and selectively engaging said teeth to hold said other member adjustably in a selected angular position about said axis relatively to said body.
Claim 6
Dependent Claim
32 words
A cam assembly according to claim 4, wherein the profiled control surface of each annular member forms the outer peripheral surface thereof, and the annular members are substantially identical to each other.
Claim 7
Dependent Claim
48 words
A cam assembly according to claim 4, wherein each annular member is open at one of its axial ends to receive said body and is partly closed at its other axial end by portions of said annular member bearing against an adjacent axial end face of said body.
Claim 8
Dependent Claim
95 words
A cam assembly according to claim 1, and further comprising portions of said body defining in an end face at one axial end of said body a recess for closely receiving a projection provided on an end face at one axial end of a generally cylindrical central body of an adjacent cam assembly, an end face at the other axial end of the first-mentioned body having provided thereon a projection for fitting in a recess formed in an end face at one axial end of a generally cylindrical central body of another adjacent cam assembly.
Claim 9
Dependent Claim
33 words
A cam assembly according to claim 1, and further comprising portions of said body defining a central axial hole therethrough of polygonal cross-section for closely receiving co-axially a cam shaft of polygonal cross-section.
References Cited (Backward Citations)
US2545719A
Cited
US3285094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |