US3137315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curtain valve
Assignee: Individual
•
Filing: 1963-05-17
•
Granted: 1964-06-16
•
Expires: 1983-05-17
Abstract
No abstract record available.
Inventors
- 👤 Robert L Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:40
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/0245; F16K5/00; F16K5/08; F16K5/14; F16K5/18; F16K5/184; F16K5/187; F16K7/00; F16K7/18; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
THE COMBINATION IN A CURTAIN VALVE OF A HOUSING DEFINING A VALVE CHAMBER HAVING A WALL AND INLET AND OUTLET PORTS, A ROTATABLE VALVE ACTUATOR IN SAID VALVE CHAMBER IN SPACED RELATIONSHIP WITH THE CHAMBER OUTLET PORT, A RESILIENT DIAPHRAGM VALVE MEMBER COILED WITHIN SAID CHAMBER TO A GENERALLY SPIRAL SHAPE WITH ONE END PORTION ATTACHED TO SAID ACTUATOR AND WITH THE REMAINING PORTION EXTENDING ARCUATELY TOWARD AND OVERLAYING THE CHAMBER OUTLET PORT, SAID MEMBER SERVING TO CLOSE AND SEAL SAID OUTLET PORT AND BEING MOVABLE TO AN OPEN POSITION AT THE URGING OF SAID ACTUATOR ON ROTATION OF THE LATTER, AND A CAMMING MEMBER DISPOSED IN SAID CHAMBER BETWEEN SAID ACTUATOR AND THE CHAMBER WALL AND SERVING TO ENGAGE THE VALVE MEMBER AS IT IS MOVED TO ITS OPEN POSITION AND TO BEND THE SAME TO A MORE TIGHTLY COILED CONFIGURATION WHEREBY TO PROVIDE A SPACE AT OPPOSITE SIDES THEREOF ADJACENT THE CHAMBER WALL FOR THE FLOW OF FLUID THROUGH THE VALVE CHAMBER.
Claim 2
Dependent Claim
164 words
THE COMBINATION IN A CURTAIN VALVE OF A HOUSING DEFINING A VALVE CHAMBER HAVING A WALL AND INLET AND OUTLET PORTS, A ROTATABLE VALVE ACTUATOR IN SAID VALVE CHAMBER IN SPACED RELATIONSHIP WITH THE CHAMBER OUTLET PORT, A RESILIENT DIAPHRAGM VALVE MEMBER COILED WITHIN SAID CHAMBER TO A GENERALLY SPIRAL SHAPE WITH ONE END PORTION ATTACHED TO SAID ACTUATOR AND WITH THE REMAINING PORTION EXTENDING ARCUATELY TOWARD AND OVERLAYING THE CHAMBER OUTLET PORT, SAID MEMBER SERVING TO CLOSE AND SEAL SAID OUTLET PORT AND BEING MOVABLE TO AN OPEN POSITION AT THE URGING OF SAID ACTUATOR ON ROTATION OF THE LATTER, AND A CAMMING MEMBER DISPOSED IN SAID CHAMBER BETWEEN SAID ACTUATOR AND THE CHAMBER WALL AND SERVING TO ENGAGE THE VALVE MEMBER AS IT IS MOVED TO ITS OPEN POSITION AND TO BEND THE SAME TO A MORE TIGHTLY COILED CONFIGURATION WHEREBY TO PROVIDE A SPACE AT OPPOSITE SIDES THEREOF ADJACENT THE CHAMBER WALL FOR THE FLOW OF FLUID THROUGH THE VALVE CHAMBER.
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |