Patent US2402981A successfully refreshed from Google Patents.
Patent US3140043A successfully refreshed from Google Patents.
US3140043A
Expired / Lapsed
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Inlet structure for gas compressors
Assignee: Studebaker Worthington Inc
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Filing: 1963-01-16
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Granted: 1964-07-07
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Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Gerald P Marcy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:36
CPC Classifications
F; F04; F04C; F04C28/00; F04C29/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A GAS COMPRESSOR COMPRISING: (A) A CASING HAVING AN INLET AND AN OUTLET THEREIN, (B) SAID CASING HAVING CHAMBER MEANS FORMED THEREIN, (C) A ROTOR DISPOSED IN SAID CHAMBER MEANS AND CONNECTED TO A SOURCE OF POWER FOR ROTATION (D) A PLURALITY OF VANES SLIDABLY DISPOSED IN SPACED RELATIONSHIP TO EACH OTHER IN SAID ROTOR AND ON ROTATION OF SAID ROTOR ADAPTED TO BEAR AGAINST SAID CASING,
Claim 2
Dependent Claim
67 words
A GAS COMPRESSOR COMPRISING: (A) A CASING HAVING AN INLET AND AN OUTLET THEREIN, (B) SAID CASING HAVING CHAMBER MEANS FORMED THEREIN, (C) A ROTOR DISPOSED IN SAID CHAMBER MEANS AND CONNECTED TO A SOURCE OF POWER FOR ROTATION (D) A PLURALITY OF VANES SLIDABLY DISPOSED IN SPACED RELATIONSHIP TO EACH OTHER IN SAID ROTOR AND ON ROTATION OF SAID ROTOR ADAPTED TO BEAR AGAINST SAID CASING,
References Cited (Backward Citations)
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Cited
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Cited
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US2894677A
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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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |