US3289919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal gas compressors
Assignee: McQuay Perfex Inc
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Filing: 1964-11-16
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Granted: 1966-12-06
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Expires: 1984-11-16
Abstract
No abstract record available.
Inventors
- 👤 Gary R Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:43
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/141; F01D17/143; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/4206; F04D29/4213; F04D29/44; F04D29/46; F04D29/462; F04D29/464; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/51; F05D2250/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A CENTRIFUGAL GAS COMPRESSOR HAVING AN AXIAL INLET PASSAGE, HAVING SPIN VANES SUPPORTED FOR ROTATION IN SAID PASSAGE, HAVING A BLADED ROTOR, HAVING AN AXIAL DIFFUSER AROUND SAID ROTOR, SAID DIFFUSER HAVING A WALL MOVABLE TO VARY THE WIDTH OF SAID DIFFUSER, MEANS FOR ROTATING SAID VANES TOWARDS CLOSED POSITIONS, AND LEVERAGE MEANS MOVABLE BY SAID ROTATING MEANS FOR MOVING SAID WALL TO NARROW SAID DIFFUSER WHEN SAID VANES ARE ROTATED TOWARDS CLOSED POSITIONS AT A RATE THAN THE RATE AT WHICH SAID VANES ARE ROTATED.
Claim 2
Dependent Claim
86 words
A CENTRIFUGAL GAS COMPRESSOR HAVING AN AXIAL INLET PASSAGE, HAVING SPIN VANES SUPPORTED FOR ROTATION IN SAID PASSAGE, HAVING A BLADED ROTOR, HAVING AN AXIAL DIFFUSER AROUND SAID ROTOR, SAID DIFFUSER HAVING A WALL MOVABLE TO VARY THE WIDTH OF SAID DIFFUSER, MEANS FOR ROTATING SAID VANES TOWARDS CLOSED POSITIONS, AND LEVERAGE MEANS MOVABLE BY SAID ROTATING MEANS FOR MOVING SAID WALL TO NARROW SAID DIFFUSER WHEN SAID VANES ARE ROTATED TOWARDS CLOSED POSITIONS AT A RATE THAN THE RATE AT WHICH SAID VANES ARE ROTATED.
References Cited (Backward Citations)
US3032259A
Cited
US3251539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |