US3139232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration pump
Assignee: Individual
•
Filing: 1959-08-24
•
Granted: 1964-06-30
•
Expires: 1979-08-24
Abstract
No abstract record available.
Inventors
- 👤 Orville N Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:21
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D13/00; F04D13/02; F04D13/06; F04D13/0653; F04D5/00; F04D5/002; F25; F25B; F25B1/00; F25B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A REFRIGERATION PUMP HAVING IN COMBINATION, AN IMPELLER COMPRISING A PLURALITY OF CONCENTRIC CHANNELS RESPECTIVELY HAVING A PLURALITY OF SPACED VANES THEREABOUT, A PLURALITY OF CONCENTRIC RACEWAYS IN OPERATIVE ASSOCIATION WITH SAID CHANNELS RESPECTIVELY FORMING ENCLOSED PASSAGES THEREWITH, AN INLET AND AN OUTLET SPACED ABOUT EACH OF SAID RACEWAYS AND BEING UNOBSTRUCTED THEREBETWEEN, AND EACH OF SAID RACEWAYS DIMINISHING IN VOLUME FROM A POINT INWARDLY OF ITS INLET IN THE DIRECTION TOWARDS ITS OUTLET.
Claim 2
Dependent Claim
74 words
A REFRIGERATION PUMP HAVING IN COMBINATION, AN IMPELLER COMPRISING A PLURALITY OF CONCENTRIC CHANNELS RESPECTIVELY HAVING A PLURALITY OF SPACED VANES THEREABOUT, A PLURALITY OF CONCENTRIC RACEWAYS IN OPERATIVE ASSOCIATION WITH SAID CHANNELS RESPECTIVELY FORMING ENCLOSED PASSAGES THEREWITH, AN INLET AND AN OUTLET SPACED ABOUT EACH OF SAID RACEWAYS AND BEING UNOBSTRUCTED THEREBETWEEN, AND EACH OF SAID RACEWAYS DIMINISHING IN VOLUME FROM A POINT INWARDLY OF ITS INLET IN THE DIRECTION TOWARDS ITS OUTLET.
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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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |