US3334656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary tape valve
Assignee: Pneumo Dynamics Corp
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Filing: 1965-10-20
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Granted: 1967-08-08
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Robert F Boyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:38
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/18; Y; Y10; Y10S; Y10S251/00; Y10S251/901; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/87169; Y10T137/87233
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A ROTARY TAPE VALVE COMPRISING HOUSING MEANS FORMING A FLUID CHAMBER, A VALVE MEMBER WITHIN A PORTION OF SAID CHAMBER HAVING A SUBSTANTIALLY CYLINDRICAL SURFACE EXPOSED IN THE CHAMBER, SAID VALVE MEMEBER BEING PROVIDED WITH A PORT AT SAID SURFACE AND A COMMUNICATING FLOW PASSAGEWAY, FLEXIBLE TAPE MEANS FOR CONTROLLING THE OPENING AND CLOSING OF SAID PORT, SAID TAPE MEANS BEING IN THE FORM OF A SPIRAL SPRING DISPOSED WITH ITS AXIS PARALLEL TO THAT OF SAID SURFACE, THE OUTER END PORTION OF
Claim 2
Dependent Claim
83 words
A ROTARY TAPE VALVE COMPRISING HOUSING MEANS FORMING A FLUID CHAMBER, A VALVE MEMBER WITHIN A PORTION OF SAID CHAMBER HAVING A SUBSTANTIALLY CYLINDRICAL SURFACE EXPOSED IN THE CHAMBER, SAID VALVE MEMEBER BEING PROVIDED WITH A PORT AT SAID SURFACE AND A COMMUNICATING FLOW PASSAGEWAY, FLEXIBLE TAPE MEANS FOR CONTROLLING THE OPENING AND CLOSING OF SAID PORT, SAID TAPE MEANS BEING IN THE FORM OF A SPIRAL SPRING DISPOSED WITH ITS AXIS PARALLEL TO THAT OF SAID SURFACE, THE OUTER END PORTION OF
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |