Patent US3270199A successfully refreshed from Google Patents.
US3270199A
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Speed control system for vehicles
Assignee: SPX Technologies Inc
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Filing: 1962-09-14
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Granted: 1966-08-30
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Expires: 1982-09-14
Abstract
No abstract record available.
Inventors
- 👤 Smith Joseph Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:19
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/0016; B; B60; B60L; B60L15/00; B60L15/40; B61; B61L; B61L3/00; B61L3/16; B61L3/22; B61L3/221; G; G05; G05D; G05D13/00; G05D13/62; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64; Y02T90/00; Y02T90/10; Y02T90/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
A SPEED CONTROL SYSTEM FOR A VEHICLE DESIRED TO OPERATE AT A PREDETERMINED SPEED COMPRISING, (A) MEANS FOR GENERATING A D.C. VOLTAGE SIGNAL WHOSE MAGNITUDE IS PROPORTIONAL TO SAID DESIRED VEHICLE SPEED, (B) MEANS CONTROLLED IN ACCORDANCE WITH THE ACTUAL SPEED OF SAID VEHICLE FOR GENERATING A SECOND SIGNAL WHOSE FREQUENCY IS PROPORTIONAL TO SAID ACTUAL VEHICLE SPEED, (C) MEANS CONTROLLED BY SAID SECOND SIGNAL FOR GENERATING A FIRST SERIES OF VOLTAGE PULSES, ONE OF SAID PULSES BEING GENERATED FOR EACH CYCLE OF SAID SECOND GENERATED SIGNAL,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |