Patent US3183791A successfully refreshed from Google Patents.
US3183791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction device operating mechanism
Assignee: Echlin Inc
•
Filing: 1963-05-31
•
Granted: 1965-05-18
•
Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Oliver B Cruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:08
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/08; B60T17/16; B60T17/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A FRICTION DEVICE OPERATING MECHANISM COMPRISING A HOUSING, PISTON MEANS SLIDABLE IN SAID HOUSING AND HAVING A WORKING END THEREON, RESILIENT MEANS NORMALLY URGING SAID PISTON MEANS IN A WORKING DIRECTION TO ACTUATE THE WORKING END THEREOF, SAID PISTON MEANS INCLUDING A PORTION HAVING GROOVE MEANS THEREIN, ABUTMENT MEANS MOVABLE IN SAID HOUSING INDEPENDENTLY THEREOF AND RADIALLY DISPLACEABLE RELATIVE TO SAID GROOVE MEANS, SAID ABUTMENT MEANS BEING NORMALLY IN ABUTTING ENGAGEMENT BETWEEN SAID GROOVE MEANS AND HOUSING TO PREVENT MOVEMENT OF SAID PISTON MEANS IN THE WORKING DIRECTION, AND EXPANSIBLE FLUID PRESSURE CHAMBER IN SAID HOUSING, AND MEANS RESPONSIVE TO FLUID PRESSURE IN SAID CHAMBER ABOVE A PREDETERMINED AMOUNT TO MAINTAIN SAID ABUTMENT MEANS AGAINST RADIAL DISPLACEMENT FROM SAID GROOVE MEANS AND IN ABUTTING ENGAGEMENT BETWEEN SAID GROOVE MEANS AND HOUSING.
Claim 2
Dependent Claim
131 words
A FRICTION DEVICE OPERATING MECHANISM COMPRISING A HOUSING, PISTON MEANS SLIDABLE IN SAID HOUSING AND HAVING A WORKING END THEREON, RESILIENT MEANS NORMALLY URGING SAID PISTON MEANS IN A WORKING DIRECTION TO ACTUATE THE WORKING END THEREOF, SAID PISTON MEANS INCLUDING A PORTION HAVING GROOVE MEANS THEREIN, ABUTMENT MEANS MOVABLE IN SAID HOUSING INDEPENDENTLY THEREOF AND RADIALLY DISPLACEABLE RELATIVE TO SAID GROOVE MEANS, SAID ABUTMENT MEANS BEING NORMALLY IN ABUTTING ENGAGEMENT BETWEEN SAID GROOVE MEANS AND HOUSING TO PREVENT MOVEMENT OF SAID PISTON MEANS IN THE WORKING DIRECTION, AND EXPANSIBLE FLUID PRESSURE CHAMBER IN SAID HOUSING, AND MEANS RESPONSIVE TO FLUID PRESSURE IN SAID CHAMBER ABOVE A PREDETERMINED AMOUNT TO MAINTAIN SAID ABUTMENT MEANS AGAINST RADIAL DISPLACEMENT FROM SAID GROOVE MEANS AND IN ABUTTING ENGAGEMENT BETWEEN SAID GROOVE MEANS AND HOUSING.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |