US3131975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slope control wheel brake control system
Assignee: North American Aviation Corp
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Filing: 1960-04-21
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Granted: 1964-05-05
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Expires: 1980-04-21
Abstract
No abstract record available.
Inventors
- 👤 Harold R Smith
- 👤 Anthony F Weissenberger
- 👤 Donald L Knowlton
- 👤 Raiklen Harold
- 👤 Liley Bobby
- 👤 Eugene H Balster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:58
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/17; B60T8/1701; B60T8/1703; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2322
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A BRAKE CONTROL SYSTEM; MEANS FOR APPLYING BRAKING FORCE WITHIN A RANGE OF VALUES IN RESPONSE TO AN INITIATING SIGNAL PROPORTIONAL TO A DESIRED RATE OF SLIPPAGE, AND LIMITING MEANS FOR LIMITING THE MAXIMUM VALUE WITHIN SAID RANGE TO THAT BRAKING FORCE WHICH PRODUCES THE SAID DESIRED RATE OF SLIPPAGE, IN COMBINATION WITH AUTOMATIC MEANS OPERABLE TO OVERRIDE SAID INITIATING SIGNAL AND ACTUATE SAID VALVE TO RELEASE SAID BRAKING
Claim 2
Dependent Claim
70 words
IN A BRAKE CONTROL SYSTEM; MEANS FOR APPLYING BRAKING FORCE WITHIN A RANGE OF VALUES IN RESPONSE TO AN INITIATING SIGNAL PROPORTIONAL TO A DESIRED RATE OF SLIPPAGE, AND LIMITING MEANS FOR LIMITING THE MAXIMUM VALUE WITHIN SAID RANGE TO THAT BRAKING FORCE WHICH PRODUCES THE SAID DESIRED RATE OF SLIPPAGE, IN COMBINATION WITH AUTOMATIC MEANS OPERABLE TO OVERRIDE SAID INITIATING SIGNAL AND ACTUATE SAID VALVE TO RELEASE SAID BRAKING
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |