Patent US3288232A successfully refreshed from Google Patents.
US3288232A
Expired / Lapsed
US
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Wheel speed control
Assignee: Shepherd Machinery Co
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Filing: 1964-09-21
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Granted: 1966-11-29
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Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Willard W Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:23
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/24; B60T8/246; B60T8/17; B60T8/175; B60T8/32; B60T8/72; Y; Y10; Y10S; Y10S303/00; Y10S303/02; Y10S303/03; Y10S303/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
IN A WHEEL SPEED CONTROL FOR A VEHICLE HAVING FIRST AND SECOND DRIVEN WHEELS AND A NONDRIVEN WHEEL, THE COMBINATION OF: FIRST SIGNAL GENERATING MEANS FOR GENERATING A FIRST SIGNAL WHICH VARIES AS A FUNCTION OF THE ROTATIONAL SPEED OF THE FIRST WHEEL; SECOND SIGNAL GENERATING MEANS FOR GENERATING A SECOND SIGNAL WHICH VARIES AS A FUNCTION OF THE ROTATIONAL SPEED OF THE SECOND WHEEL; THIRD SIGNAL GENERATING MEANS FOR GENERATING A THIRD SIGNAL WHICH VARIES AS A FUNCTION OF THE ROTATIONAL SPEED OF THE NONDRIVEN WHEEL; FIRST SPEED REDUCING MEANS FOR REDUCING THE SPEED OF THE FIRST WHEEL; SECOND SPEED REDUCING MEANS FOR REDUCING THE SPEED OF THE SECOND WHEEL; CONTROL CIRCUIT MEANS FOR PRODUCING A SELECTED ONE OF TWO OUTPUT SIGNALS WHEN FIRST AND SECOND INPUT SIGNALS DIFFER BY A PREDETERMINED AMOUNT AND PRODUCING BOTH OF SAID OUTPUT SIGNALS WHEN BOTH THE FIRST AND SECOND INPUT SIGNALS DIFFER FROM A THIRD INPUT SIGNAL BY A PREDETERMINED AMOUNT; MEANS FOR COUPLING SAID FIRST, SECOND AND THIRD SIGNALS TO SAID CONTROL CIRCUIT MEANS AS INPUTS; AND MEANS FOR COUPLING SAID OUTPUT SIGNALS TO SAID FIRST AND SECOND SPEED REDUCING MEANS, RESPECTIVELY, IN CONTROLLING RELATION.
Claim 2
Dependent Claim
194 words
IN A WHEEL SPEED CONTROL FOR A VEHICLE HAVING FIRST AND SECOND DRIVEN WHEELS AND A NONDRIVEN WHEEL, THE COMBINATION OF: FIRST SIGNAL GENERATING MEANS FOR GENERATING A FIRST SIGNAL WHICH VARIES AS A FUNCTION OF THE ROTATIONAL SPEED OF THE FIRST WHEEL; SECOND SIGNAL GENERATING MEANS FOR GENERATING A SECOND SIGNAL WHICH VARIES AS A FUNCTION OF THE ROTATIONAL SPEED OF THE SECOND WHEEL; THIRD SIGNAL GENERATING MEANS FOR GENERATING A THIRD SIGNAL WHICH VARIES AS A FUNCTION OF THE ROTATIONAL SPEED OF THE NONDRIVEN WHEEL; FIRST SPEED REDUCING MEANS FOR REDUCING THE SPEED OF THE FIRST WHEEL; SECOND SPEED REDUCING MEANS FOR REDUCING THE SPEED OF THE SECOND WHEEL; CONTROL CIRCUIT MEANS FOR PRODUCING A SELECTED ONE OF TWO OUTPUT SIGNALS WHEN FIRST AND SECOND INPUT SIGNALS DIFFER BY A PREDETERMINED AMOUNT AND PRODUCING BOTH OF SAID OUTPUT SIGNALS WHEN BOTH THE FIRST AND SECOND INPUT SIGNALS DIFFER FROM A THIRD INPUT SIGNAL BY A PREDETERMINED AMOUNT; MEANS FOR COUPLING SAID FIRST, SECOND AND THIRD SIGNALS TO SAID CONTROL CIRCUIT MEANS AS INPUTS; AND MEANS FOR COUPLING SAID OUTPUT SIGNALS TO SAID FIRST AND SECOND SPEED REDUCING MEANS, RESPECTIVELY, IN CONTROLLING RELATION.
References Cited (Backward Citations)
US2401628A
Cited
US3025722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |