US3701404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque overload release coupling
Assignee: Individual
•
Filing: 1971-03-31
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Granted: 1972-10-31
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Expires: 1991-03-31
Abstract
Abstract A torque overload release coupling having a clutch member rotatably and slidably journaled on one of the driving and driven members with drive keys extending through the member on which it is journaled. The drive keys and the other member have cooperating cam surfaces engaging in the driving position and exerting an axial force in proportion to drive torque tending to move the drive keys out of engagement. Snap action detents hold the clutch member in the driving and released positions.
Inventors
- 👤 Perry E Cassell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:23
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/20; F16D43/202
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A coupling comprising driving and driven members journaled to each other, a clutch member supported on one of said members for rotation and axial movement relative to said one member, a drive key on the clutch member, the drive key and said one member having interengaging surfaces inhibiting relative rotation between the clutcH member and said one member, the drive key and the other of said members having interengaging cam surfaces exerting an axial force in proportion to the drive torque in the direction to disengage the cam surfaces, and snap action detent means on said clutch member and said one member for resisting said axial force.
Claim 2
Dependent Claim
107 words
A coupling comprising driving and driven members journaled to each other, a clutch member supported on one of said members for rotation and axial movement relative to said one member, a drive key on the clutch member, the drive key and said one member having interengaging surfaces inhibiting relative rotation between the clutcH member and said one member, the drive key and the other of said members having interengaging cam surfaces exerting an axial force in proportion to the drive torque in the direction to disengage the cam surfaces, and snap action detent means on said clutch member and said one member for resisting said axial force.
Claim 3
Dependent Claim
26 words
The coupling of claim 1 in which the detent means comprises a spring pressed ball in said clutch member and a recess in said one member.
Claim 4
Dependent Claim
56 words
The coupling of claim 2 in which the interengaging surfaces on said clutch member and said one member have angular lost motion therebetween as the axial movement of the clutch member relative to said one member starts so the relative angular movement between the clutch member and said one member assists in overcoming said detent means.
Claim 5
Dependent Claim
24 words
The coupling of claim 1 in which the drive key is tapered in the driving position and mates with complementary surfaces on said members.
Claim 6
Dependent Claim
24 words
The coupling of claim 4 in which the drive key is an axially extending tapered head on a pin fixed to said clutch member.
Claim 7
Dependent Claim
38 words
The coupling of claim 1 in which the drive key and said one of said members have interengaging cam surfaces exerting an axial force in proportion to the drive torque in the direction to disengage the cam surfaces.
Claim 8
Dependent Claim
20 words
The coupling of claim 6 in which the interengaging cam surfaces are on circumferentially spaced sides of said drive key.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |