Patent US3270756A successfully refreshed from Google Patents.
US3270756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow control valve
Assignee: Individual
•
Filing: 1963-04-09
•
Granted: 1966-09-06
•
Expires: 1983-04-09
Abstract
No abstract record available.
Inventors
- 👤 Hugh L Dryden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:08
CPC Classifications
F; F02; F02K; F02K5/00; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/8593; Y10T137/87265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN A VALVE, THE COMBINATION COMPRISING: A FLOW CONTROL MEMBER POSITIONED TO BLOCK THE PATH OF FLOW OF A SELECTED FLUID THROUGH SAID VALVE, SAID MEMBER BEING CONSTRUCTED OF MATERIAL WHOSE CRYSTAL STRUCTURE CONTAINS APERTURES THROUGH WHICH MOLECULES OF SID SELECTED FLUID CAN FLOW, AND WHOSE APERTURE SIZE VARIES IN RESPONSE TO TEMPERATURE CHANGE; AND MEANS TO CHANGE THE TEMPERATURE OF SAID FLOW CONTROL MEMBER TO CHANGE THE SIZE OF SAID APERTURES TO VARY THE IMPEDANCE OF SAID FLOW CONTRL MEMBER TO THE FLOW OF MOLECULES OF SAID SELECTED FLUID THROUGH SAID APERTURES.
Claim 2
Dependent Claim
93 words
IN A VALVE, THE COMBINATION COMPRISING: A FLOW CONTROL MEMBER POSITIONED TO BLOCK THE PATH OF FLOW OF A SELECTED FLUID THROUGH SAID VALVE, SAID MEMBER BEING CONSTRUCTED OF MATERIAL WHOSE CRYSTAL STRUCTURE CONTAINS APERTURES THROUGH WHICH MOLECULES OF SID SELECTED FLUID CAN FLOW, AND WHOSE APERTURE SIZE VARIES IN RESPONSE TO TEMPERATURE CHANGE; AND MEANS TO CHANGE THE TEMPERATURE OF SAID FLOW CONTROL MEMBER TO CHANGE THE SIZE OF SAID APERTURES TO VARY THE IMPEDANCE OF SAID FLOW CONTRL MEMBER TO THE FLOW OF MOLECULES OF SAID SELECTED FLUID THROUGH SAID APERTURES.
References Cited (Backward Citations)
US2909919A
Cited
US3001607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |