US3385515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant reciprocating compressor
Assignee: Lennox Industries Inc
•
Filing: 1966-10-17
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Granted: 1968-05-28
•
Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Sidney A Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:31
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A REFRIGERANT RECIPROCATING COMPRESSOR, A CRANKCASE COMPRISING OUTER, INTERMEDIATE AND INNER COAXIAL SHEET METAL SLEEVES OF DIFFERENT DIAMETERS TO DEFINE ANNULAR SPACES BETWEEN ADJACENT SLEEVES, ANNULAR TOP AND BOTTOM PLATE MEANS JOINED TO THE OPPOSITE ENDS OF THE SLEEVES AND SECURING THEM RIGIDLY TOGETHER, THE SLEEVES BEING FORMED WITH RADIALLY ALIGNED OPENINGS THERETHROUGH, A TUBULAR VALVE HOUSING SECURED IN THE OPENINGS IN THE OUTER AND INTERMEDIATE SLEEVES, THE VALVE HOUSING AND THE OPENING IN THE INNER SLEEVE ADAPTED TO RECEIVE AND SUPPORT A CYLIN-
Claim 2
Dependent Claim
85 words
IN A REFRIGERANT RECIPROCATING COMPRESSOR, A CRANKCASE COMPRISING OUTER, INTERMEDIATE AND INNER COAXIAL SHEET METAL SLEEVES OF DIFFERENT DIAMETERS TO DEFINE ANNULAR SPACES BETWEEN ADJACENT SLEEVES, ANNULAR TOP AND BOTTOM PLATE MEANS JOINED TO THE OPPOSITE ENDS OF THE SLEEVES AND SECURING THEM RIGIDLY TOGETHER, THE SLEEVES BEING FORMED WITH RADIALLY ALIGNED OPENINGS THERETHROUGH, A TUBULAR VALVE HOUSING SECURED IN THE OPENINGS IN THE OUTER AND INTERMEDIATE SLEEVES, THE VALVE HOUSING AND THE OPENING IN THE INNER SLEEVE ADAPTED TO RECEIVE AND SUPPORT A CYLIN-
References Cited (Backward Citations)
US3021995A
Cited
US3162360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |