US3329246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reversible viscous shear coupling
Assignee: Individual
•
Filing: 1965-10-24
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Granted: 1967-07-04
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Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Louis G Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:08
CPC Classifications
F; F16; F16D; F16D35/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
IN A VISCOUS SHEAR COUPLING OF THE CHARACTER DESCRIBED, IN COMBINATION, AXIALLY FIXED DRIVING AND DRIVEN MEMBERS RELATIVELY ROTATABLE ABOUT A COMMON AXIS, ONE OF SAID ABUTMENT BEING IN THE FORM OF A RIGID HOUSING DEFINING AB INTERNAL CAVITY ENCLOSING THE OTHER MEMBER, THE ENCLOSED MEMBER PRESENTING A RADIAL PLANAR SURFACE CLOSELY SPACED FROM THE RADIAL PLANAR SURFACE OF THE ENCLOSED MEMBER AND, IN COMBINATION THEREWITH, ESTABLISHING A HIGH SHEAR WORKING ZONE FOR A FLUID IN SHEAR WITHIN THE CAVITY, THE REMAINING PORTION OF SAID CAVITY ESTABLISHING A LARGE VOLUME, NEGLIGIBLE-SHEAR STORAGE ZONE FOR THE FLUID,
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |