Patent US3188050A successfully refreshed from Google Patents.
US3188050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seals for turbo-machinery
Assignee: Library and Archives Canada
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Filing: 1963-06-19
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Granted: 1965-06-08
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Expires: 1983-06-19
Abstract
No abstract record available.
Inventors
- 👤 Koeller Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:40
CPC Classifications
F; F03; F03B; F03B11/00; F03B11/006; Y; Y02; Y02E; Y02E10/00; Y02E10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A HYDRAULIC SYSTEM, A WORKING FLUID HAVING A ZONE OR RELATIVELY HIGH TOTAL ENERGY AND A ZONE OF RELATIVELY LOW TOTAL ENERGY, A TURBOMACHINE LOCATED BETWEEN SAID ZONES COMPRISING A STATIONARY HOUSING, A SHROUDED ROTOR IN COMMUNICATION WITH THE WORKING FLUID AND SPACED FROM THE STATIONARY HOUSING TO FORM A PAIR OF RUNNING CLEARANCES, MEANS TO PREVENT LEAKAGE OF WORKING FLUID INTO AT LEAST ONE OF SAID CLEARANCES COMPRISING MEANS FOR REMOVING A PORTION OF THE WORKING FLUID FROM THE HIGHER
Claim 2
Dependent Claim
82 words
IN A HYDRAULIC SYSTEM, A WORKING FLUID HAVING A ZONE OR RELATIVELY HIGH TOTAL ENERGY AND A ZONE OF RELATIVELY LOW TOTAL ENERGY, A TURBOMACHINE LOCATED BETWEEN SAID ZONES COMPRISING A STATIONARY HOUSING, A SHROUDED ROTOR IN COMMUNICATION WITH THE WORKING FLUID AND SPACED FROM THE STATIONARY HOUSING TO FORM A PAIR OF RUNNING CLEARANCES, MEANS TO PREVENT LEAKAGE OF WORKING FLUID INTO AT LEAST ONE OF SAID CLEARANCES COMPRISING MEANS FOR REMOVING A PORTION OF THE WORKING FLUID FROM THE HIGHER
References Cited (Backward Citations)
DE714290C
Cited
US2656096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |