Patent US3131546A successfully refreshed from Google Patents.
US3131546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purge arrangements
Assignee: Carrier Corp
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Filing: 1962-03-28
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Granted: 1964-05-05
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Expires: 1982-03-28
Abstract
No abstract record available.
Inventors
- 👤 William T Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:01
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/04; F25B43/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD OF REMOVING GASES FROM A REGION OF A REFRIGERATION SYSTEM AND TRANSFERRING THEM TO A DESIRED LOCATION WHICH CONSISTS IN THE STEPS OF: (A) TRANSFERRING SAID GASES FROM SAID REGION OF SAID REFRIGERATION SYSTEM BY DRAINING A DISPLACEMENT CHAMBER OF A LIQUID CONTAINED THEREIN IN ORDER TO CREATE A PRESSURE SUFFICIENT TO INDUCE THE FLOW OF SAID GASES FROM SAID REGION OF SAID REFRIGERATION SYSTEM INTO SAID DISPLACEMENT CHAMBER, (B) RESTRICTING THE RETURN OF SAID GASES FROM SAID DISPLACEMENT CHAMBER BACK TO SAID REGION OF SAID REFRIGERATION SYSTEM, AND (C) INTRODUCTING A LIQUID INTO SAID DISPLACEMENT CHAMBER UNDER A PRESSURE SUFFICIENT TO EXPEL SAID GASES THEREFROM THROUGH AN EXHAUST PASSAGE TO SAID DESIRED LOCATION.
Claim 2
Independent Claim
116 words
A METHOD OF REMOVING GASES FROM A REGION OF A REFRIGERATION SYSTEM AND TRANSFERRING THEM TO A DESIRED LOCATION WHICH CONSISTS IN THE STEPS OF: (A) TRANSFERRING SAID GASES FROM SAID REGION OF SAID REFRIGERATION SYSTEM BY DRAINING A DISPLACEMENT CHAMBER OF A LIQUID CONTAINED THEREIN IN ORDER TO CREATE A PRESSURE SUFFICIENT TO INDUCE THE FLOW OF SAID GASES FROM SAID REGION OF SAID REFRIGERATION SYSTEM INTO SAID DISPLACEMENT CHAMBER, (B) RESTRICTING THE RETURN OF SAID GASES FROM SAID DISPLACEMENT CHAMBER BACK TO SAID REGION OF SAID REFRIGERATION SYSTEM, AND (C) INTRODUCTING A LIQUID INTO SAID DISPLACEMENT CHAMBER UNDER A PRESSURE SUFFICIENT TO EXPEL SAID GASES THEREFROM THROUGH AN EXHAUST PASSAGE TO SAID DESIRED LOCATION.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |