US3330131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerator with transformer means
Assignee: Individual
•
Filing: 1964-07-02
•
Granted: 1967-07-11
•
Expires: 1984-07-02
Abstract
No abstract record available.
Inventors
- 👤 Papst Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:24
CPC Classifications
H; H02; H02K; H02K17/00; H02K17/02; H02K17/16; F; F25; F25D; F25D23/00; F25D23/003; H02K9/00; F25D2323/00; F25D2323/002; F25D2323/0026; F25D2323/00264; F25D2323/0027; F25D2323/00272
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A COOLING DEVICE COMPRISING A CLOSED REFRIGERANT CIRCUIT INCLUDING A COMPRESSOR AND A HEAT EXCHANGER INDUCING AN AIR FLOW; A MOTOR DRIVING SAID COMPRESSOR AND COOLED BY THE REFRIGERANT IN SAID CLOSED REFRIGERANT CIRCUIT; A FAN OPERABLE TO DIRECT A FLOW OF AIR OVER SAID HEAT EXCHANGER; A DRIVE MOTOR FOR SAID FAN; A TRANSFORMER HAVING A PRIMARY WINDING CONNECTABLE TO AN ALTERNATING CURRENT SUPPLY AND A SECONDARY WINDING PROVIDING A SMALL ALTERNATING VOLTAGE, SAID TRANSFORMER BEING POSITIONED IN THE PATH OF SAID AIR FLOW NEARER TO SAID HEAT EXCHANGER THAN SAID COMPRESSOR; CONNECTIONS FROM SAID SECONDARY WINDING OF SAID TRANSFORMER TO SAID COMPRESSOR DRIVE MOTOR AND TO SAID FAN DRIVE MOTOR.
Claim 2
Dependent Claim
112 words
A COOLING DEVICE COMPRISING A CLOSED REFRIGERANT CIRCUIT INCLUDING A COMPRESSOR AND A HEAT EXCHANGER INDUCING AN AIR FLOW; A MOTOR DRIVING SAID COMPRESSOR AND COOLED BY THE REFRIGERANT IN SAID CLOSED REFRIGERANT CIRCUIT; A FAN OPERABLE TO DIRECT A FLOW OF AIR OVER SAID HEAT EXCHANGER; A DRIVE MOTOR FOR SAID FAN; A TRANSFORMER HAVING A PRIMARY WINDING CONNECTABLE TO AN ALTERNATING CURRENT SUPPLY AND A SECONDARY WINDING PROVIDING A SMALL ALTERNATING VOLTAGE, SAID TRANSFORMER BEING POSITIONED IN THE PATH OF SAID AIR FLOW NEARER TO SAID HEAT EXCHANGER THAN SAID COMPRESSOR; CONNECTIONS FROM SAID SECONDARY WINDING OF SAID TRANSFORMER TO SAID COMPRESSOR DRIVE MOTOR AND TO SAID FAN DRIVE MOTOR.
References Cited (Backward Citations)
US2169115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |