US3187285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed control for electric truck
Assignee: Electro-Mechanical LLC
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Filing: 1961-04-18
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Granted: 1965-06-01
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Expires: 1981-04-18
Abstract
No abstract record available.
Inventors
- 👤 James W Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:27
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/10; H01C10/12; Y; Y10; Y10S; Y10S388/00; Y10S388/923; Y10S388/929
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
A SPPED CONTROL UNIT FOR AN ELECTRIC MOTOR COMPRISING A BASE MEMBER, AND ACCELERATOR PEDAL MOUNTED FOR RELATIVE MOVEMENT ON SAID MEMBER, A PAIR OF ELONGATED INSULATORS MOUNTED IN SIDE-BY-SIDE UPRIGHT POSITION ON SAID MEMBER, A STACK OF CENTRALLY APERTURED CARBON DISCS MOUNTED FOR SLIDING MOVEMENT ON SAID INSULATORS, A CIRCUIT TERMINAL CONNECTED WITH THE BOTTOM DISC IN EACH STACK, A PRESSURE PLATE HAVING APERTURED ENDS SLIDABLE ON SAID INSULATORS AND BEARING ON THE TOP DISCS IN SAID STACKS, SAID PLATE CONSTITUTING A CIRCUIT CONDUCTOR BETWEN THE TOP ENDS OF SAID STACKS, AND A TENSION ROD CONNECTED BETWEEN SAID PEDAL AND THE CENTER OF SAID PRESSURE PLATE AND INSULATED FROM SAID PRESSURE PLATE, SAID ROD EXTENDING BETWEEN SAID STACKS AND PASSING SLIDABLY THROUGH AN APERTURE IN SAID BASE MEMBER.
References Cited (Backward Citations)
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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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |