Patent US3245727A successfully refreshed from Google Patents.
US3245727A
Expired / Lapsed
US
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Anti-skid brake control system
Assignee: Crane Co
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Filing: 1962-08-15
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Granted: 1966-04-12
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Expires: 1982-08-15
Abstract
No abstract record available.
Inventors
- 👤 Jack S Anderson
- 👤 Maurice A Gage
- 👤 Daniel R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:23
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/321; B60T8/17; B60T8/1701; B60T8/1703; B60T8/176; B60T8/1761; B60T8/17613
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A BRAKE-CONTROL SYSTEM FOR CONTROLLING APPLICATION OF BRAKING EFFORT TO A WHEEL OF A VEHICLE HAVING A PLURALITY OF INDEPENDENTLY-ROTATABLE BRAKE-EQUIPPED WHEELS, SAID SYSTEM COMPRISING, IN COMBINATION WITH THE WHEEL AND ASSOCIATED BRAKE; MEANS TO PRODUCE A SUBSTANTIALLY CONSTANT ELECTRICAL BIAS POTENTIAL OF PREDETERMINED VALUE REPRESENTATIVE OF THE MAXIMUM PREMISSIBLE RATE OF DECELERATION OF THE VEHICLE IN TERMS OF RADIUS PER SECOND PER SECOND DECELERATION OF THE WHEEL; MEANS TO PRODUCE AND REGISTER A VARIABLE ELECTRICAL POTENTIAL THE VALUE OF WHICH VARIES IN PROPORTION TO THE RATE OF CHANGE OF ROTATIONAL SPEED OF THE WHEEL; CIRCUIT MEANS INCLUDING TRANSISTOR MEANS BIASED TO A CONDUCTING STATE BY SAID BIAS POTENTIAL AND TO A NONCONDUCTIVE STATE BY SAID VARIABLE ELECTRICAL POTENTIAL THEREBY RESPONSIVE TO REDUCTION OF SAID VARIABLE ELETRICAL POTENTIAL TO A VALVE BELOW THAT OF BIAS POTENTIAL TO PRODUCE A CONTROL SIGNAL; AND MEANS RESPONSIVE TO THE SAID CONTROL SIGNAL TO RELIEVE BRAKING EFFORT APPLIED TO THE WHEEL BY THE ASSOCIATED BRAKE.
Claim 2
Dependent Claim
161 words
A BRAKE-CONTROL SYSTEM FOR CONTROLLING APPLICATION OF BRAKING EFFORT TO A WHEEL OF A VEHICLE HAVING A PLURALITY OF INDEPENDENTLY-ROTATABLE BRAKE-EQUIPPED WHEELS, SAID SYSTEM COMPRISING, IN COMBINATION WITH THE WHEEL AND ASSOCIATED BRAKE; MEANS TO PRODUCE A SUBSTANTIALLY CONSTANT ELECTRICAL BIAS POTENTIAL OF PREDETERMINED VALUE REPRESENTATIVE OF THE MAXIMUM PREMISSIBLE RATE OF DECELERATION OF THE VEHICLE IN TERMS OF RADIUS PER SECOND PER SECOND DECELERATION OF THE WHEEL; MEANS TO PRODUCE AND REGISTER A VARIABLE ELECTRICAL POTENTIAL THE VALUE OF WHICH VARIES IN PROPORTION TO THE RATE OF CHANGE OF ROTATIONAL SPEED OF THE WHEEL; CIRCUIT MEANS INCLUDING TRANSISTOR MEANS BIASED TO A CONDUCTING STATE BY SAID BIAS POTENTIAL AND TO A NONCONDUCTIVE STATE BY SAID VARIABLE ELECTRICAL POTENTIAL THEREBY RESPONSIVE TO REDUCTION OF SAID VARIABLE ELETRICAL POTENTIAL TO A VALVE BELOW THAT OF BIAS POTENTIAL TO PRODUCE A CONTROL SIGNAL; AND MEANS RESPONSIVE TO THE SAID CONTROL SIGNAL TO RELIEVE BRAKING EFFORT APPLIED TO THE WHEEL BY THE ASSOCIATED BRAKE.
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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |