US3071225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transmission coupling
Assignee: Link Belt Co
•
Filing: 1960-05-20
•
Granted: 1963-01-01
•
Expires: 1980-05-20
Abstract
No abstract record available.
Inventors
- 👤 Robert E Blau
- 👤 Ralph A Evans
- 👤 Louis J Stephanoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:58
CPC Classifications
F; F16; F16D; F16D35/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A POWER TRANSMISSION COUPLING COMPRISING DRIVING, DRIVEN AND INTERMEDIATE MEMBERS SUPPORTED FOR RELATIVE ROTATION ABOUT A COMMON AXIS WITH THE INTERMEDIATE MEMBER SUPPORTED FOR LIMITED AXIAL MOVEMENT RELATIVE TO BOTH OTHER MEMBERS, SAID DRIVING AND INTERMEDIATE MEMBERS HAVING OPPOSED RADIALLY EXTENDING SHEAR SURFACES SPACED FROM AND AXIALLY MOVABLE RELATIVE TO EACH OTHER THROUGH A LIMITED RANGE OF DISTANCES TO FORM AND AT ALL TIMES MAINTAIN A VISCOUS FLUID SHEAR CONNECTION ONLY BETWEEN SAID DRIVING AND INTERMEDIATE MEMBERS, AND MEANS FORMING A MECHANICAL DRIVING CONNECTION BETWEEN SAID INTERMEDIATE AND DRIVEN MEMBERS RESPONSIVE TO VARIATIONS IN THE FORCE TRANSMITTED THEREBY FOR EFFECTING LIMITED RELATIVE AXIAL MOVEMENT BETWEEN SAID INTERMEDIATE AND SAID DRIVEN AND DRIVING MEMBERS TO VARY THE SPACE BETWEEN SAID SHEAR SURFACES AND TO LIMIT THE FORCES TRANSMISSIBLE BY SAID VISCOUS FLUID SHEAR CONNECTION.
Claim 2
Dependent Claim
133 words
A POWER TRANSMISSION COUPLING COMPRISING DRIVING, DRIVEN AND INTERMEDIATE MEMBERS SUPPORTED FOR RELATIVE ROTATION ABOUT A COMMON AXIS WITH THE INTERMEDIATE MEMBER SUPPORTED FOR LIMITED AXIAL MOVEMENT RELATIVE TO BOTH OTHER MEMBERS, SAID DRIVING AND INTERMEDIATE MEMBERS HAVING OPPOSED RADIALLY EXTENDING SHEAR SURFACES SPACED FROM AND AXIALLY MOVABLE RELATIVE TO EACH OTHER THROUGH A LIMITED RANGE OF DISTANCES TO FORM AND AT ALL TIMES MAINTAIN A VISCOUS FLUID SHEAR CONNECTION ONLY BETWEEN SAID DRIVING AND INTERMEDIATE MEMBERS, AND MEANS FORMING A MECHANICAL DRIVING CONNECTION BETWEEN SAID INTERMEDIATE AND DRIVEN MEMBERS RESPONSIVE TO VARIATIONS IN THE FORCE TRANSMITTED THEREBY FOR EFFECTING LIMITED RELATIVE AXIAL MOVEMENT BETWEEN SAID INTERMEDIATE AND SAID DRIVEN AND DRIVING MEMBERS TO VARY THE SPACE BETWEEN SAID SHEAR SURFACES AND TO LIMIT THE FORCES TRANSMISSIBLE BY SAID VISCOUS FLUID SHEAR CONNECTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |