US3402338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controller for a dc or universal motor utilizing static switching elements
Assignee: New York Air Brake LLC
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Filing: 1966-03-03
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Granted: 1968-09-17
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Expires: 1986-03-03
Abstract
No abstract record available.
Inventors
- 👤 John C Thoresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:54
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/295; H02P25/00; H02P25/02; H02P25/10; H02P25/14; Y; Y10; Y10S; Y10S388/00; Y10S388/907; Y10S388/917; Y10S388/919
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A CONTROLLER FOR A DC OR UNIVERSAL MOTOR INCLUDING (A) AN AC POWER SOURCE CONNECTED WITH THE MOTOR THROUGH STATIC, GATE-CONTROLLED POWER SWITCHING MEANS; (B) STATIC TRIGGERING MEANS FOR GATING SAID SWITCHING MEANS; (C) A TIMING CIRCUIT FOR CONTROLLING THE FIRING ANGLE OF THE TRIGGERING MEANS; (D) A GENERATOR FOR SUPPLYING TO SAID TIMING CIRCUIT VOLTAGE PULSES WHICH ARE IN SYNCHRONISM WITH THE AC POWER; (E) MEANS FOR REGULATING THE MAGNITUDE OF THE VOLTAGE PULSES SUPPLIED TO THE TIMING CIRCUIT; AND
Claim 2
Dependent Claim
81 words
A CONTROLLER FOR A DC OR UNIVERSAL MOTOR INCLUDING (A) AN AC POWER SOURCE CONNECTED WITH THE MOTOR THROUGH STATIC, GATE-CONTROLLED POWER SWITCHING MEANS; (B) STATIC TRIGGERING MEANS FOR GATING SAID SWITCHING MEANS; (C) A TIMING CIRCUIT FOR CONTROLLING THE FIRING ANGLE OF THE TRIGGERING MEANS; (D) A GENERATOR FOR SUPPLYING TO SAID TIMING CIRCUIT VOLTAGE PULSES WHICH ARE IN SYNCHRONISM WITH THE AC POWER; (E) MEANS FOR REGULATING THE MAGNITUDE OF THE VOLTAGE PULSES SUPPLIED TO THE TIMING CIRCUIT; AND
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |