Patent US3141707A successfully refreshed from Google Patents.
US3141707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic retarder control
Assignee: Motors Liquidation Co
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Filing: 1963-05-23
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Granted: 1964-07-21
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Expires: 1983-05-23
Abstract
No abstract record available.
Inventors
- 👤 Carl L Nigh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:02
CPC Classifications
B; B60; B60K; B60K31/00; B60K31/06; B60K31/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
THE COMBINATION WITH A VEHICLE HAVING A FLUIDOPERATED BRAKING SYSTEM, A SOURCE OF COMPRESSED AIR, A CONTROL CIRCUIT INCLUDING FIRST MEANS RESPONSIVE TO THE FORWARD SPEED OF THE VEHICLE, SECOND MEANS RESPONSIVE TO THE INCLINATION OF THE VEHICLE, A VALVE IN SAID BRAKING SYSTEM FOR CONTROLLING ACTIVATION OF THE LATTER, SAID FIRST AND SECOND MEANS OPERATIVELY ASSOCIATED WITH SAID VALVE TO MOVE THE LATTER WHEN THE VEHICLE ATTAINS A PREDETERMINED FORWARD SPEED AT A PREDETERMINED INCLINATION SO AS TO ACTIVATE SAID BRAKING SYSTEM AND RETARD FORWARD TRAVEL OF THE VEHICLE.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |