US3258933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration
Assignee: Carrier Corp
•
Filing: 1964-10-08
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Granted: 1966-07-05
•
Expires: 1984-10-08
Abstract
No abstract record available.
Inventors
- 👤 William T Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:40
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02; F25D; F25D17/00; F25D17/02; F25B2339/00; F25B2339/02; F25B2339/024; F25B2339/0242
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
A REFRIGERATION SYSTEM UTILIZING A REFRIGERANT FLUID IMMISCRIBLE WITH AND HAVING A LOWER BOILING POINT THAN WATER, A METHOD OF PRODUCING REFRIGERATION COMPRISING, CIRCULATING SECONDARY CHILLED WATER TO A LOAD TO BE COOLED, MIXING LIQUID REFRIGERANT AND PRIMARY CHILLED WATER, SPRAYING THE MIXTURE TO COOL THE PRIMARY CHILLED WATER BY DIRECT CONTACT WITH THE SPRAYED REFRIGERANT WHICH VAPORIZES UPON COOLING THE WATER, AND COOLING THE SECONDARY CHILLED WATER BY PASSING THE SPRAY INTO UNMIXED HEAT ESCHANGE RELATIONSHIP WITH SAID SECONDARY CHILLED WATER.
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |