Patent US3225554A successfully refreshed from Google Patents.
US3225554A
Expired / Lapsed
US
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Pressure injector
Assignee: Individual
•
Filing: 1964-11-03
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Granted: 1965-12-28
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Expires: 1984-11-03
Abstract
No abstract record available.
Inventors
- 👤 William O Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:01
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/002; F25B2345/00; F25B2345/001; F25B45/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
FOR USE WITH A MOTOR COMPRESSOR IN A REFRIGERATION SYSTEM WHICH CONTAINS (A) A SUCTION VALVE ON THE SUCTION SIDE OF THE COMPRESSOR; (B) A PRESSURE VALVE ON THE PRESSURE SIDE OF THE COMPRESSOR; (C) AN OIL RESERVOIR AND AN EXTERIOR OIL BOSS CONTAINING A CHANNEL WHICH COMMUNICATES WITH SAID OIL RESERVOIR, A PORTABLE SERVICE PRESSURE INJECTOR WHERIN OIL MAY BE ADDED TO THE MOTOR COMPRESSOR WITHOUT CONTAMINATING THE REFRIGERANT THEREIN WHICH COMPRISES: (A) AN OIL CONTAINER AND A SOURCE OF PRESSURIZED REFRIGERANT IN WHICH (I) SAID OIL CONTAINER CONTAINS A REFRIGERANT FITTING FOR CONNECTION TO A PRESSURIZED REFRIGERANT SOURCE, A MANUALLY OPERATED EXHAUST AND PRESSURE REGULATING VALVE, OPERATIVE TO EXHAUST THE CONTAINER OF NON-CONDENS-
Claim 2
Dependent Claim
115 words
FOR USE WITH A MOTOR COMPRESSOR IN A REFRIGERATION SYSTEM WHICH CONTAINS (A) A SUCTION VALVE ON THE SUCTION SIDE OF THE COMPRESSOR; (B) A PRESSURE VALVE ON THE PRESSURE SIDE OF THE COMPRESSOR; (C) AN OIL RESERVOIR AND AN EXTERIOR OIL BOSS CONTAINING A CHANNEL WHICH COMMUNICATES WITH SAID OIL RESERVOIR, A PORTABLE SERVICE PRESSURE INJECTOR WHERIN OIL MAY BE ADDED TO THE MOTOR COMPRESSOR WITHOUT CONTAMINATING THE REFRIGERANT THEREIN WHICH COMPRISES: (A) AN OIL CONTAINER AND A SOURCE OF PRESSURIZED REFRIGERANT IN WHICH (I) SAID OIL CONTAINER CONTAINS A REFRIGERANT FITTING FOR CONNECTION TO A PRESSURIZED REFRIGERANT SOURCE, A MANUALLY OPERATED EXHAUST AND PRESSURE REGULATING VALVE, OPERATIVE TO EXHAUST THE CONTAINER OF NON-CONDENS-
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |