US3283525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical control for a refrigeration system
Assignee: Westinghouse Electric Corp
•
Filing: 1964-04-09
•
Granted: 1966-11-08
•
Expires: 1984-04-09
Abstract
No abstract record available.
Inventors
- 👤 Roger F Fricke
- 👤 Walter E Wier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:45
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/38; F; F25; F25B; F25B27/00; F25B49/00; F25B49/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A VEHICLE REFRIGERATION SYSTEM COMPRISING AN ALTERNATING CURRENT GENERATOR HAVING A DIRECT CURRENT FIELD WINDING AND OUTPUT TERMINALS; DRIVING MEANS DRIVING SAID ALTERNATING CURRENT GENERATOR THAT MAY VARY IN DRIVING SPEED; REFRIGERATION MEANS, INCLUDING A COMPRESSOR AND THERMOSTAT; AN ALTERNATING CURRENT LOAD, INCLUDING AN ALTERNATING CURRENT MOTOR DRIVING SAID COMPRESSOR; SAID ALTERNATING CURRENT LOAD BEING CONNECTED IN CIRCUIT RELATION WITH THE OUTPUT TERMINALS OF SAID ALTERNATING CURRENT GENERATOR; MEANS CONNECTED IN CIRCUIT RELATION WITH SAID FIELD WINDING PROVIDING AN EXCITATION CURRENT PROPORTIONAL TO SAID ALTERNATING CURRENT LOAD, WHICH PRODUCES AN ELECTRICAL OUTPUT AT THE OUTPUT TERMINALS OF SAID ALTERNATING CURRENT GENERATOR HAVING A CONSTANT RATIO OF VOLTAGE TO FREQUENCY; MEANS CONNECTED IN CIRCUIT RELATION WITH SAID THERMOSTAT AND OPERABLY CONNECTED WITH SAID DRIVING MEANS, INCREASING THE SPEED OF SAID DRIVING MEANS TO A PREDETERMINED MINIMUM WHEN SAID THERMOSTAT INDICATES COOLING IS REQUIRED AND THE DRIVING SPEED IS BELOW SAID PREDETERMINED MINIMUM.
Claim 2
Dependent Claim
151 words
A VEHICLE REFRIGERATION SYSTEM COMPRISING AN ALTERNATING CURRENT GENERATOR HAVING A DIRECT CURRENT FIELD WINDING AND OUTPUT TERMINALS; DRIVING MEANS DRIVING SAID ALTERNATING CURRENT GENERATOR THAT MAY VARY IN DRIVING SPEED; REFRIGERATION MEANS, INCLUDING A COMPRESSOR AND THERMOSTAT; AN ALTERNATING CURRENT LOAD, INCLUDING AN ALTERNATING CURRENT MOTOR DRIVING SAID COMPRESSOR; SAID ALTERNATING CURRENT LOAD BEING CONNECTED IN CIRCUIT RELATION WITH THE OUTPUT TERMINALS OF SAID ALTERNATING CURRENT GENERATOR; MEANS CONNECTED IN CIRCUIT RELATION WITH SAID FIELD WINDING PROVIDING AN EXCITATION CURRENT PROPORTIONAL TO SAID ALTERNATING CURRENT LOAD, WHICH PRODUCES AN ELECTRICAL OUTPUT AT THE OUTPUT TERMINALS OF SAID ALTERNATING CURRENT GENERATOR HAVING A CONSTANT RATIO OF VOLTAGE TO FREQUENCY; MEANS CONNECTED IN CIRCUIT RELATION WITH SAID THERMOSTAT AND OPERABLY CONNECTED WITH SAID DRIVING MEANS, INCREASING THE SPEED OF SAID DRIVING MEANS TO A PREDETERMINED MINIMUM WHEN SAID THERMOSTAT INDICATES COOLING IS REQUIRED AND THE DRIVING SPEED IS BELOW SAID PREDETERMINED MINIMUM.
References Cited (Backward Citations)
USRE21837E
Cited
US2357086A
Cited
US2455935A
Cited
US2482588A
Cited
US2786334A
Cited
US2844783A
Cited
US3074002A
Cited
US3034035A
Cited
US3042850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |