US3454860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage cut-off circuits
Assignee: Mcculloch Corp
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Filing: 1966-02-25
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Granted: 1969-07-08
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Expires: 1986-02-25
Abstract
Abstract Voltage cut-off circuits for cutting off the charging current to a battery from a variable direct-current generator having a shunt winding, the circuits include a voltage-responsive switch connected across the shunt winding of the generator for short-circuiting the shunt winding when the battery voltage reaches a predetermined level and a voltage level sensing circuit for controlling the operation of the switch.
Inventors
- 👤 Wilford B Burkett
- 👤 Robert V Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:34
CPC Classifications
H; H02; H02K; H02K23/00; H02K23/52; B; B27; B27B; B27B17/00; F; F02; F02N; F02N11/00; F02N11/04; H02H; H02H3/00; H02H3/02; H02H3/021; H02H3/023; H02H9/00; H02H9/04; H02H9/041; H02J; H02J7/00; H02J7/02; H02J7/14; H02J7/1469; H02J7/1492; H02J7/16; H02J7/24; H02J7/2437; F02B; F02B1/00; F02B1/02; F02B1/04; H02J2207/00; H02J2207/20
Claims Analysis
Total Claims: 0
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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) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |