Patent US4942724A successfully refreshed from Google Patents.
Patent US3081096A successfully refreshed from Google Patents.
US3081096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressurized seals for the shafts of fans
Assignee: Westinghouse Electric Corp
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Filing: 1961-07-24
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Granted: 1963-03-12
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Expires: 1981-07-24
Abstract
No abstract record available.
Inventors
- 👤 Roderick V Woodbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:59
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A PRESSURIZED SEAL FOR A SHAFT OF A FAN HAVING A CASING WITH A BACK WALL THROUGH WHICH SAID SHAFT EXTENDS, COMPRISING AN INBOARD PLATE HAVING A CLEARANCE OPENING FOR SAID SHAFT, MEANS FOR SPACING SAID PLATE FROM AND ATTACHING SAID PLATE TO SAID WALL WITH SAID OPENING AROUND SAID SHAFT, AN OUTBOARD PLATE HAVING A CLEARANCE OPENING FOR SAID SHAFT, MEANS FOR SPACING SAID OUTBOARD PLATE FROM AND ATTACHING SAID OUTBOARD PLATE TO SAID INBOARD PLATE WITH SAID LAST MENTIONED OPENING AROUND SAID SHAFT, A PAIR OF SEAL RINGS AROUND SAID SHAFT WITHIN THE SPACE BETWEEN SAID PLATES, MEANS FOR SPACING SAID RINGS APART AND ATTACHING SAID RINGS TO EACH OTHER, MEANS FOR ADMITTING AIR UNDER PRESSURE THROUGH SAID OUTBOARD PLATE AND INTO THE SPACE BETWEEN SAID RINGS, SAID OUTBOARD PLATE HAVING ANOTHER OPENING ABOVE SAID SHAFT, AND AN ADJUSTING PIN EXTENDING THROUGH SAID OTHER OPENING AND ATTACHED TO SAID RINGS.
Claim 2
Dependent Claim
152 words
A PRESSURIZED SEAL FOR A SHAFT OF A FAN HAVING A CASING WITH A BACK WALL THROUGH WHICH SAID SHAFT EXTENDS, COMPRISING AN INBOARD PLATE HAVING A CLEARANCE OPENING FOR SAID SHAFT, MEANS FOR SPACING SAID PLATE FROM AND ATTACHING SAID PLATE TO SAID WALL WITH SAID OPENING AROUND SAID SHAFT, AN OUTBOARD PLATE HAVING A CLEARANCE OPENING FOR SAID SHAFT, MEANS FOR SPACING SAID OUTBOARD PLATE FROM AND ATTACHING SAID OUTBOARD PLATE TO SAID INBOARD PLATE WITH SAID LAST MENTIONED OPENING AROUND SAID SHAFT, A PAIR OF SEAL RINGS AROUND SAID SHAFT WITHIN THE SPACE BETWEEN SAID PLATES, MEANS FOR SPACING SAID RINGS APART AND ATTACHING SAID RINGS TO EACH OTHER, MEANS FOR ADMITTING AIR UNDER PRESSURE THROUGH SAID OUTBOARD PLATE AND INTO THE SPACE BETWEEN SAID RINGS, SAID OUTBOARD PLATE HAVING ANOTHER OPENING ABOVE SAID SHAFT, AND AN ADJUSTING PIN EXTENDING THROUGH SAID OTHER OPENING AND ATTACHED TO SAID RINGS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |