US3179019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction device operating mechanism
Assignee: Studebaker Worthington Inc
•
Filing: 1962-10-12
•
Granted: 1965-04-20
•
Expires: 1982-10-12
Abstract
No abstract record available.
Inventors
- 👤 Oliver B Cruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:02
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/08; B60T17/085; B60T17/086; B60T17/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A FRICTION DEVICE OPERATING MECHANISM COMPRISING A HOUSING HAVING A BORE THEREIN, AN END WALL CONNECTED WITH SAID HOUSING AND CLOSING ONE END OF SAID BORE, A CENTRALLY LOCATED OPENING IN SAID END WALL, FIRST PISTON MEANS INCLUDING A HEAD PORTION AND IN INTEGRAL SLEEVE PORTION SLIDABLE IN SAID HOUSING BORE, A SLEEVE BORE IN SAID SLEEVE PORTION, APERTURE MEANS IN SAID HEAD PORTION AND ALIGNED WITH SAID END WALL OPENING, A BASE WALL CONNECTED TO SAID SLEEVE PORTION AND AXIALLY SPACED FROM SAID HEAD PORTION, SECOND PISTON MEANS SLIDABLE IN SAID SLEEVE BORE, EXTENSION MEANS ON SAID SECOND PISTON MEANS SLIDABLE IN SAID APERTURE MEANS AN OPENING AND HAVING A WORKING END EXTERIORLY OF SAID HOUSING, AND EXPANSIBLE CHAMBER IN SAID SLEEVE BORE BETWEEN SAID SECOND PISTON MEANS AND BASE WALL, MEANS FOR INTRODUCING FLUID PRESSURE INTO SAID EXPANSIBLE CHAMBER, SAID SECOND PISTON MEANS BEING MOVABLE IN RESPONSE TO FLUID PRESSURE IN SAID CHAMBER TO ACTUATE SAID EXTENSION MEANS AND ENERGIZE THE WORKING END THEREOF, ANOTHER EXPANSIBLE CHAMBER IN SAID HOUSING BORE BETWEEN SAID END WALL AND FIRST PISTON MEANS, OTHER MEANS FOR INTRODUCING FLUID PRESSURE INTO SAID OTHER
Claim 2
Dependent Claim
190 words
A FRICTION DEVICE OPERATING MECHANISM COMPRISING A HOUSING HAVING A BORE THEREIN, AN END WALL CONNECTED WITH SAID HOUSING AND CLOSING ONE END OF SAID BORE, A CENTRALLY LOCATED OPENING IN SAID END WALL, FIRST PISTON MEANS INCLUDING A HEAD PORTION AND IN INTEGRAL SLEEVE PORTION SLIDABLE IN SAID HOUSING BORE, A SLEEVE BORE IN SAID SLEEVE PORTION, APERTURE MEANS IN SAID HEAD PORTION AND ALIGNED WITH SAID END WALL OPENING, A BASE WALL CONNECTED TO SAID SLEEVE PORTION AND AXIALLY SPACED FROM SAID HEAD PORTION, SECOND PISTON MEANS SLIDABLE IN SAID SLEEVE BORE, EXTENSION MEANS ON SAID SECOND PISTON MEANS SLIDABLE IN SAID APERTURE MEANS AN OPENING AND HAVING A WORKING END EXTERIORLY OF SAID HOUSING, AND EXPANSIBLE CHAMBER IN SAID SLEEVE BORE BETWEEN SAID SECOND PISTON MEANS AND BASE WALL, MEANS FOR INTRODUCING FLUID PRESSURE INTO SAID EXPANSIBLE CHAMBER, SAID SECOND PISTON MEANS BEING MOVABLE IN RESPONSE TO FLUID PRESSURE IN SAID CHAMBER TO ACTUATE SAID EXTENSION MEANS AND ENERGIZE THE WORKING END THEREOF, ANOTHER EXPANSIBLE CHAMBER IN SAID HOUSING BORE BETWEEN SAID END WALL AND FIRST PISTON MEANS, OTHER MEANS FOR INTRODUCING FLUID PRESSURE INTO SAID OTHER
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |