US3389314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportional silicon controlled rectifier driven system for a heat motor
Assignee: Penn Controls Inc
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Filing: 1962-05-07
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Granted: 1968-06-18
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Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 Dwight C Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:09
CPC Classifications
G; G05; G05B; G05B6/00; G05B6/02; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1919; G05D23/1921; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE COMBINATION COMPRISING: A HEAT MOTOR HAVING AN EXPANDABLE CHAMBERM CONTAINING A FLUID, AN ELECTRICAL RESISTANCE HEATER AND AN OUTPUT ACTUATOR, A SILICON-CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A CONTROL ELEMENT, SAID HEATER, SAID ANODE, AND SAID CATHODE ADAPTED TO BE CONNECTED IN SERIES ACROSS A SOURCE OF ALTERNATING CURRENT, AND MEANS FOR APPLYING A TRIGGER PULSE ACROSS SAID CONTROL ELEMENT AND SAID CATHODE.
Claim 2
Dependent Claim
66 words
THE COMBINATION COMPRISING: A HEAT MOTOR HAVING AN EXPANDABLE CHAMBERM CONTAINING A FLUID, AN ELECTRICAL RESISTANCE HEATER AND AN OUTPUT ACTUATOR, A SILICON-CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A CONTROL ELEMENT, SAID HEATER, SAID ANODE, AND SAID CATHODE ADAPTED TO BE CONNECTED IN SERIES ACROSS A SOURCE OF ALTERNATING CURRENT, AND MEANS FOR APPLYING A TRIGGER PULSE ACROSS SAID CONTROL ELEMENT AND SAID CATHODE.
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) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |