Patent US3109296A successfully refreshed from Google Patents.
US3109296A
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Apparatus and method for refrigeration by carbon dioxide
Assignee: Chemetron Corp
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Filing: 1961-09-29
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Granted: 1963-11-05
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Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Hilding V Williamson
- 👤 Clarence E Wolfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:24
CPC Classifications
F; F25; F25D; F25D29/00; F25D29/001; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
A METHOD OF SPRAYING LIQUID CARBON DIOXIDE INTO A COMPARTMENT COMPRISING THE STEPS OF STORING A QUANTITY OF LIQUID CARBON DIOXIDE UNDER PRESSURE, SUPPLYING SAID LIQUID CARBON DIOXIDE UNDER PRESSURE FOR DISCHARGE INTO SAID COMPARTMENT, AND PERIODICALLY DISCHARGING A PORTION OF SAID LIQUID CARBON DIOXIDE FROM SAID PRESSURE TO THE PRESSURE IN SAID COMPARTMENT AND INCLUDING THE STEPS OF RAPIDLY INITIATING THE DISCHARGE OF SAID CARBON DIOXIDE TO BEGIN SAID DISCHARGE AND RAPIDLY TERMINATING SAID DISCHARGE OF SAID CARBON DIOXIDE, UTILIZING THE PRESSURE OF SAID LIQUID CARBON DIOXIDE TO EFFECT THE RAPID INITIATION OF THE DISCHARGE OF THE SAID CARBON DIOXIDE AND UTILIZING THE PRESSURE OF CARBON DIOXIDE VAPOR TO EFFECT THE RAPID TERMINATION OF SAID DISCHARGE OF LIQUID CARBON DIOXIDE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |