Patent US3146795A successfully refreshed from Google Patents.
US3146795A
Expired / Lapsed
US
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Rotary valve
Assignee: Individual
•
Filing: 1963-09-10
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Granted: 1964-09-01
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Expires: 1983-09-10
Abstract
No abstract record available.
Inventors
- 👤 William B Retallick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:09
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/085; F16K11/0856; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86549; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86654; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A ROTARY VALVE COMPRISING A SLIDABLE ROTOR WITHIN THE BORE OF A HOUSING (A) SAID ROTOR BEING CUT AWAY FROM SAID HOUSING ALONG TWO EDGES WHEREBY AN ANNULAR SPACE IS CONFINED WITHIN SAID BORE BETWEEN SAID EDGES, (B) SAID EDGES BEING SPACED APART AND ALSO NONCIRCULAR, WHEREBY EACH OF SAID EDGES PERIDICALLY OVERLAPS SEPARATE LENGTH OF THE WALL OF THE BORE UPON ROTATION OF THE ROTOR, (C) SAID HOUSING HAVING AT LEAST ONE INLET PORT ADJACENT THE MIDPOINT OF SAID ANNULAR SPACE, (D) SAID HOUSING HAVING AT LEAST ONE OUTLET PORT LYING WITHIN EACH OF SAID OVERLAPPED LENGTHS OF SAID BORE WALL WHEREBY SAID OUTLET PORTS ARE PERIODICALLY OVERLAPPED BY SAID NONCIRCULAR EDGES, (E) SAID ROTOR BEING AXIALLY SLIDABLE WHEREBY THE DURATION OF OVERLAPPING CAN BE VARIED.
Claim 2
Dependent Claim
127 words
A ROTARY VALVE COMPRISING A SLIDABLE ROTOR WITHIN THE BORE OF A HOUSING (A) SAID ROTOR BEING CUT AWAY FROM SAID HOUSING ALONG TWO EDGES WHEREBY AN ANNULAR SPACE IS CONFINED WITHIN SAID BORE BETWEEN SAID EDGES, (B) SAID EDGES BEING SPACED APART AND ALSO NONCIRCULAR, WHEREBY EACH OF SAID EDGES PERIDICALLY OVERLAPS SEPARATE LENGTH OF THE WALL OF THE BORE UPON ROTATION OF THE ROTOR, (C) SAID HOUSING HAVING AT LEAST ONE INLET PORT ADJACENT THE MIDPOINT OF SAID ANNULAR SPACE, (D) SAID HOUSING HAVING AT LEAST ONE OUTLET PORT LYING WITHIN EACH OF SAID OVERLAPPED LENGTHS OF SAID BORE WALL WHEREBY SAID OUTLET PORTS ARE PERIODICALLY OVERLAPPED BY SAID NONCIRCULAR EDGES, (E) SAID ROTOR BEING AXIALLY SLIDABLE WHEREBY THE DURATION OF OVERLAPPING CAN BE VARIED.
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |