US3307665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powder coupling having pressure adjustable means
Assignee: Individual
•
Filing: 1965-04-22
•
Granted: 1967-03-07
•
Expires: 1985-04-22
Abstract
No abstract record available.
Inventors
- 👤 Johan E A Graae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:32
CPC Classifications
F; F16; F16D; F16D37/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A POWDER COUPLING AND THE LIKE COMPRISING RELATIVELY ROTATABLE CO-AXIAL DRIVING AND DRIVEN ELEMENTS; ONE OF SAID ELEMENTS INCLUDING A CASING HAVING THEREIN A HOLLOW; THE OTHER OF SAID ELEMENTS INCLUDING A ROTOR DISPOSED WITHIN THE HOLLOW IN SAID CASING;
Claim 2
Dependent Claim
40 words
A POWDER COUPLING AND THE LIKE COMPRISING RELATIVELY ROTATABLE CO-AXIAL DRIVING AND DRIVEN ELEMENTS; ONE OF SAID ELEMENTS INCLUDING A CASING HAVING THEREIN A HOLLOW; THE OTHER OF SAID ELEMENTS INCLUDING A ROTOR DISPOSED WITHIN THE HOLLOW IN SAID CASING;
References Cited (Backward Citations)
DE178653C
Cited
US1238098A
Cited
US1862802A
Cited
US2576156A
Cited
US2714946A
Cited
US2924122A
Cited
US2985272A
Cited
FR1249263A
Cited
US3180571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |