US3148513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable thermal unit
Assignee: Individual
•
Filing: 1962-04-02
•
Granted: 1964-09-15
•
Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 James O Ewing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:49
CPC Classifications
F; F25; F25B; F25B13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A PORTABLE THERMAL UNIT INCLUDING A REVERSIBLE REFRIGERATION SYSTEM COMPRISING A COMPRESSOR HAVING AN INTAKE AND OUTLET, A FIRST HEAT EXCHANGE UNIT, A SECOND HEAT EXCHANGE UNIT, ONE OF SAID UNITS INCLUDING A FLEXIBLE OUTER TUBULAR MEMBER AND A FLEXIBLE INNER TUBULAR MEMBER CONCENTRIC THEREWITH, THE INNER TUBULAR MEMBER OF SAID ONE UNIT BEING CONNECTED WITH THE OTHER HEAT EXCHANGE UNIT, A REVERSING VALVE SELECTIVELY INTERCONNECTING THE COMPRESSOR INTAKE AND OUTLET WITH THE OUTER TUBULAR MEMBER OF THE ONE UNIT AND WITH THE OTHER HEAT EXCHANGE UNIT, AND CAPILLARY TUBE MEANS INTERCOMMUNICATING THE UNITS AND RESTRICTING FLOW OF REFRIGERANT SO THAT THE SAME MAY EXPAND FOR ABSORBING HEAT, THE OUTER END OF THE OUTER TUBULAR MEMBER BEING CLOSED FOR FLOW AND EXPANSION OF THE REFRIGERANT FROM THE INNER TUBULAR MEMBER TO THE OUTER TUBULAR MEMBER, SAID OUTER TUBULAR MEMBER BEING IN THE FORM OF A FLEXIBLE BELLOWS MEMBER, AND A PROTECTIVE WIRE WOVEN CASING ENCLOSING THE BELLOWS MEMBER FOR PREVENTING DAMAGE THERETO.
Claim 2
Dependent Claim
162 words
A PORTABLE THERMAL UNIT INCLUDING A REVERSIBLE REFRIGERATION SYSTEM COMPRISING A COMPRESSOR HAVING AN INTAKE AND OUTLET, A FIRST HEAT EXCHANGE UNIT, A SECOND HEAT EXCHANGE UNIT, ONE OF SAID UNITS INCLUDING A FLEXIBLE OUTER TUBULAR MEMBER AND A FLEXIBLE INNER TUBULAR MEMBER CONCENTRIC THEREWITH, THE INNER TUBULAR MEMBER OF SAID ONE UNIT BEING CONNECTED WITH THE OTHER HEAT EXCHANGE UNIT, A REVERSING VALVE SELECTIVELY INTERCONNECTING THE COMPRESSOR INTAKE AND OUTLET WITH THE OUTER TUBULAR MEMBER OF THE ONE UNIT AND WITH THE OTHER HEAT EXCHANGE UNIT, AND CAPILLARY TUBE MEANS INTERCOMMUNICATING THE UNITS AND RESTRICTING FLOW OF REFRIGERANT SO THAT THE SAME MAY EXPAND FOR ABSORBING HEAT, THE OUTER END OF THE OUTER TUBULAR MEMBER BEING CLOSED FOR FLOW AND EXPANSION OF THE REFRIGERANT FROM THE INNER TUBULAR MEMBER TO THE OUTER TUBULAR MEMBER, SAID OUTER TUBULAR MEMBER BEING IN THE FORM OF A FLEXIBLE BELLOWS MEMBER, AND A PROTECTIVE WIRE WOVEN CASING ENCLOSING THE BELLOWS MEMBER FOR PREVENTING DAMAGE THERETO.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |