US3287935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction clutch
Assignee: DR C SCHACHENMANN AND CO
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Filing: 1964-06-10
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Granted: 1966-11-29
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Expires: 1984-06-10
Abstract
No abstract record available.
Inventors
- 👤 Grunbaum Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:36
CPC Classifications
F; F16; F16D; F16D7/00; F16D7/02; F16D7/024; F16D7/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A FRICTION CLUTCH, COMPRISING A FIRST ROTARY COUPLING UNIT INCLUDING A FIRST COUPLING MEMBER; A SECOND ROTARY COUPLING UNIT LOCATED SUBSTANTIALLY COAXIALLY WITH RESPECT TO SAID FIRST COUPLING UNIT, SAID SECOND COUPLING UNIT INCLUDING A COUPLING ELEMENT HAVING A SUBSTANTIALLY CYLINDRICAL PORTION SUBSTANTIALLY COAXIAL WITH SAID FIRST COUPLING MEMBER AND A RADIALLY EXTENDING TRANSVERSE WALL PORTION, AN ANNULAR CLUTCH MEMBER ROTATABLY AND SLIDABLY RECEIVED ON SAID SUBSTANTIALLY CYLINDRICAL PORTION OF SAID FIRST COUPLING ELEMENT, AND BIASING MEANS PROVIDED ON SAID FIRST COUPLING ELEMENT AND ARRANGED TO BIAS SAID CLUTCH MEMBER AXIALLY INTO FRICTIONAL ENGAGEMENT WITH SAID TRANSVERSE WALL PORTION; CONNECTING MEANS PROVIDED ON SAID MEMBERS FOR CONSTRAINING THE LATTER FOR SIMULTANEOUS ROTATIONAL MOVEMENT ABOUT THEIR COMMON AXIS AND FOR PERMITTING SAID MEMBERS TO MOVE FREELY OUT OF ENGAGEMENT WITH EACH OTHER IN AXIAL DIRECTION IN RESPONSE TO MOVEMENT OF ONE OF SAID COUPLING UNITS AXIALLY AWAY FROM THE OTHER COUPLING UNIT, WITHOUT AFFECTING THE BIAS OF SAID BIASING MEANS, SAID COUPLING UNITS TRANSMITTING BETWEEN THEMSELVES A DRIVING TORQUE WHOSE MAGNITUDE DEPENDS ON THE BIAS OF SAID BIASING MEANS WHEN SAID MEMBERS ARE CONNECTED FOR SIMULTANEOUS ROTATIONAL MOVEMENT.
Claim 2
Dependent Claim
187 words
A FRICTION CLUTCH, COMPRISING A FIRST ROTARY COUPLING UNIT INCLUDING A FIRST COUPLING MEMBER; A SECOND ROTARY COUPLING UNIT LOCATED SUBSTANTIALLY COAXIALLY WITH RESPECT TO SAID FIRST COUPLING UNIT, SAID SECOND COUPLING UNIT INCLUDING A COUPLING ELEMENT HAVING A SUBSTANTIALLY CYLINDRICAL PORTION SUBSTANTIALLY COAXIAL WITH SAID FIRST COUPLING MEMBER AND A RADIALLY EXTENDING TRANSVERSE WALL PORTION, AN ANNULAR CLUTCH MEMBER ROTATABLY AND SLIDABLY RECEIVED ON SAID SUBSTANTIALLY CYLINDRICAL PORTION OF SAID FIRST COUPLING ELEMENT, AND BIASING MEANS PROVIDED ON SAID FIRST COUPLING ELEMENT AND ARRANGED TO BIAS SAID CLUTCH MEMBER AXIALLY INTO FRICTIONAL ENGAGEMENT WITH SAID TRANSVERSE WALL PORTION; CONNECTING MEANS PROVIDED ON SAID MEMBERS FOR CONSTRAINING THE LATTER FOR SIMULTANEOUS ROTATIONAL MOVEMENT ABOUT THEIR COMMON AXIS AND FOR PERMITTING SAID MEMBERS TO MOVE FREELY OUT OF ENGAGEMENT WITH EACH OTHER IN AXIAL DIRECTION IN RESPONSE TO MOVEMENT OF ONE OF SAID COUPLING UNITS AXIALLY AWAY FROM THE OTHER COUPLING UNIT, WITHOUT AFFECTING THE BIAS OF SAID BIASING MEANS, SAID COUPLING UNITS TRANSMITTING BETWEEN THEMSELVES A DRIVING TORQUE WHOSE MAGNITUDE DEPENDS ON THE BIAS OF SAID BIASING MEANS WHEN SAID MEMBERS ARE CONNECTED FOR SIMULTANEOUS ROTATIONAL MOVEMENT.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |