US3709343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch with teeth alignment cam
Assignee: Maag Gear Wheel and Machine Co Ltd
•
Filing: 1971-11-23
•
Granted: 1973-01-09
•
Expires: 1991-11-23
Abstract
Abstract A gear clutch or coupling has one part with a pair of axially spaced gear rings and another part with a further gear ring engageable alternatively with either of said pair of gear rings. One of the pair of gear rings is relatively narrow and serves simply to align the further gear ring with the other of the pair of gear rings where necessary to allow them to be brought into mesh. For this purpose the teeth of the pair of gear rings are circumferentially offset relative to each other by a distance different from a half tooth pitch.
Inventors
- 👤 H Sigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:55
CPC Classifications
F; F16; F16D; F16D11/00; F16D11/08; F16D11/10; F16D2011/002; F16D2011/008
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
131 words
A clutch comprising, in combination, driving and driven parts that are relatively displaceable axially for connection and disconnection of the clutch, a pair of toothed gear rings provided on one of said parts at axially spaced positions, a further gear ring on the other of said parts being disposed between said pair of gear rings when the clutch is disconnected and having teeth engageable with the teeth of either of said pair of gear rings, the teeth of said pair of gear rings being mutually offset on the circumferential direction by a fraction of a tooth pitch other than one half of a tooth pitch, the teeth of one of said pair of gear rings having a smaller axial extent than the teeth of the gear ring of said other part.
Claim 2
Dependent Claim
131 words
A clutch comprising, in combination, driving and driven parts that are relatively displaceable axially for connection and disconnection of the clutch, a pair of toothed gear rings provided on one of said parts at axially spaced positions, a further gear ring on the other of said parts being disposed between said pair of gear rings when the clutch is disconnected and having teeth engageable with the teeth of either of said pair of gear rings, the teeth of said pair of gear rings being mutually offset on the circumferential direction by a fraction of a tooth pitch other than one half of a tooth pitch, the teeth of one of said pair of gear rings having a smaller axial extent than the teeth of the gear ring of said other part.
Claim 3
Dependent Claim
27 words
A clutch according to claim 1 wherein the teeth of said pair of gear rings are offset by one quarter or three quarters of a tooth pitch.
Claim 4
Dependent Claim
25 words
A clutch according to claim 1 wherein the smaller of the pair of gear rings is formed as a face gear with axially projecting teeth.
Claim 5
Dependent Claim
31 words
A clutch according to claim 1 wherein said further gear ring has axially opposite end regions of its teeth tapered for entry into meshing engagement with said pair of gear rings.
Claim 6
Dependent Claim
13 words
A clutch according to claim 4 wherein said ends have 45* tapered faces.
Claim 7
Dependent Claim
35 words
A clutch according to claim 4 wherein the teeth of said pair of gear rings have end regions facing said further gear ring that are tapered similarly to the teeth of the further gear ring.
Claim 8
Dependent Claim
33 words
A clutch according to claim 4 wherein axially facing ends of the teeth of said pair of gear rings and of said further gear ring have tips that are rounded in circumferential profile.
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |