Patent US3305165A successfully refreshed from Google Patents.
US3305165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic fluid compressor
Assignee: Individual
•
Filing: 1963-12-20
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Granted: 1967-02-21
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Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred T Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/44; F04D29/46; F04D29/462; F04D29/464; F04D17/00; F04D17/02; F04D17/08; F04D17/10; F04D17/12; F04D17/122; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/51
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A COMPRESSOR FOR COMPRESSING AIR AND OTHER ELASTIC FLUIDS, COMPRISING AN ANNULAR PLENUM CHAMBER FOR RECEIVING INLET AIR TO THE COMPRESSOR, AN ANNULAR ROW OF TRANSONIC ROTOR BLADES COMMUNICATING WITH SAID PLENUM CHAMBER AND ARRANGED TO RECEIVE AND DISCHARGE AIR IN A RADIALLY INWARD DIRECTION, AN ANNULAR ROW OF STATOR BLADES INWARDLY OF SAID ROTOR BLADES, SAID STATOR BLADES HAVING INNER ENDS WHICH EXTEND RADIALLY INWARD SO THAT THE AIR LEAVES THE STATOR BLADES WITH A VELOCITY HAVING SUBSTANTIALLY NO TANGENTIAL COMPONENT, WALL MEANS DEFINING AN ANNULAR PASSAGE DOWNSTREAM OF SAID STATOR BLADES AND HAVING AN INNER PORTION WHICH IS CURVED SO THAT ITS DOWNSTREAM END LIES GENERALLY AXIALLY AND THE AIR IS DIRECTED AXIALLY AS IT LEAVES SAID PASSAGE, AND CENTRIFUGAL IMPELLER MEANS ARRANGED TO RECEIVE THE AIR IN AN AXIAL DIRECTION AND DISCHARGE AND COMPRESS THE AIR IN A RADIALLY OUTWARD DIRECTION.
Claim 2
Dependent Claim
144 words
A COMPRESSOR FOR COMPRESSING AIR AND OTHER ELASTIC FLUIDS, COMPRISING AN ANNULAR PLENUM CHAMBER FOR RECEIVING INLET AIR TO THE COMPRESSOR, AN ANNULAR ROW OF TRANSONIC ROTOR BLADES COMMUNICATING WITH SAID PLENUM CHAMBER AND ARRANGED TO RECEIVE AND DISCHARGE AIR IN A RADIALLY INWARD DIRECTION, AN ANNULAR ROW OF STATOR BLADES INWARDLY OF SAID ROTOR BLADES, SAID STATOR BLADES HAVING INNER ENDS WHICH EXTEND RADIALLY INWARD SO THAT THE AIR LEAVES THE STATOR BLADES WITH A VELOCITY HAVING SUBSTANTIALLY NO TANGENTIAL COMPONENT, WALL MEANS DEFINING AN ANNULAR PASSAGE DOWNSTREAM OF SAID STATOR BLADES AND HAVING AN INNER PORTION WHICH IS CURVED SO THAT ITS DOWNSTREAM END LIES GENERALLY AXIALLY AND THE AIR IS DIRECTED AXIALLY AS IT LEAVES SAID PASSAGE, AND CENTRIFUGAL IMPELLER MEANS ARRANGED TO RECEIVE THE AIR IN AN AXIAL DIRECTION AND DISCHARGE AND COMPRESS THE AIR IN A RADIALLY OUTWARD DIRECTION.
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |