US3176809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particulate magnetic material clutch with friction brake
Assignee: Individual
•
Filing: 1962-11-08
•
Granted: 1965-04-06
•
Expires: 1982-11-08
Abstract
No abstract record available.
Inventors
- 👤 William A Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:59
CPC Classifications
F; F16; F16D; F16D37/00; F16D37/02; F16D67/00; F16D67/02; F16D67/06; F16D2037/002
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
IN ELECTROMAGNETIC COUPLING APPARATUS, A HOUSING, FIELD MEANS IN SAID HOUSING COMPRISING ANNULAR POLE MEANS AND ENERGIZABLE FIELD COIL MEANS ASSOCIATED THEREWITH, ANANNULAR ROTOR MEANS IN SAID HOUSING COMPRISING RELATIVELY ROTATABLE POWER INPUT AND POWER OUTPUT ROTORS IN ASSOCIATED AIR-GAP RELATION TO SAID POLE MEANS AND FORMING WITH THE LATTER A PATH FOR MAGNETIC FLUX PRODUCED BY SAID FIELD MEANS, PARTICULATE MAGNETIC MATERIAL IN THE AIR GAP BETWEEN SAID INPUT AND OUTPUT ROTORS AND RESPONSIVE TO SAID FLUX FOR TRANSMITTING TORQUE FROM ONE TO ANOTHER OF SAID ROTORS, AND BRAKE MEANS BETWEEN SAID POLE MEANS
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |