US3213975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring applied fluid pressure release brake
Assignee: Studebaker Worthington Inc
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Filing: 1963-12-04
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Granted: 1965-10-26
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Expires: 1983-12-04
Abstract
No abstract record available.
Inventors
- 👤 Norman E Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:41
CPC Classifications
F; F16; F16D; F16D49/00; F16D49/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
144 words
OPERATING MEANS FOR A FRICTION DEVICE COMPRISING A HOUSING, ACTUATING MEANS MOVABLE IN SAID HOUSING AND HAVING AN END EXTERIORLY OF SAID HOUSING FOR OPERATIVE CONNECTION WITH SAID FRICTION DEVICE, OTHER MEANS INCLUDING DRIVEN MEANS ON SAID ACTUATING MEANS ADJACENT TO SAID EXTERIOR END THEREOF, RESILIENT MEANS CONNECTED BETWEEN SAID HOUSING AND SAID OTHER MEANS AND NORMALLY URGING SAID ACTUATING MEANS IN ONE DIRECTION TO EFFECT FRICTION DEVICE ENERGIZATION, ROTATABLE MEANS MOUNTED ON SAID HOUSING FOR ROTATABLE DRIVING ENGAGEMENT WITH SAID DRIVEN MEANS, AND SELECTIVELY OPERABLE MEANS PIVOTALLY MOUNTED ON SAID HOUSING FOR DRIVING ENGAGEMENT WITH SAID ROTATABLE MEANS, SAID SELECTIVELY OPERABLE MEANS BEING MOVABLE IN RESPONSE TO AN APPLIED FORCE TO DRIVINGLY ROTATE SAID ROTATABLE MEANS AND THEREBY DRIVE SAID DRIVEN MEANS IN A DIRECTION OPPOSITE TO THE ONE DIRECTION TO OVERCOME THE FORCE OF SAID RESILIENT MEANS FOR DE-ENERGIZING SAID FRICTION DEVICE.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |