Valves and valve actuation – Fluid actuated or retarded – Flexible wall expansible chamber reciprocating valve actuator
Reexamination Certificate
2006-06-13
2006-06-13
Look, Edward K. (Department: 3751)
Valves and valve actuation
Fluid actuated or retarded
Flexible wall expansible chamber reciprocating valve actuator
C251S061100, C092S034000, C092S13000R
Reexamination Certificate
active
07059578
ABSTRACT:
The present invention relates to fluid control valves. The invention provides an improved diaphragm useful for a large hydraulically-operated valve or pressure regulating valve of the type used in pipelines to transport water, oil, gas, acids, alkalis and other fluids.The diaphragm being provided with an upper face arranged to be exposed to a control hydraulic pressure and a lower face arranged to selectively seal and open a passage between a valve inlet and a valve outlet, ribs on said upper face urging the diaphragm towards a sealing position. The diaphragm being characterized by the addition of an elastomer ring element disposed adjacent to the upper face and adjacent to the largest diameter of the diaphragm exposed inside a valve to which it may be assembled, an upper face of the flexible ring element being in pressure contact with a portion of the rigid body of the valve. The flexible ring element further urging the diaphragm towards its lower position and allowing closure of the valve without use of a metallic compression spring.
REFERENCES:
patent: 4619436 (1986-10-01), Bonzer et al.
patent: 5108067 (1992-04-01), Straub
patent: 6095484 (2000-08-01), Frenkel
Fristoe Jr. John K.
Look Edward K.
Pearl Cohen Zedek Latzer LLP
Raphael Valves Industry (1975) Ltd.
LandOfFree
Diaphragm and hydraulically-operated valve using same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diaphragm and hydraulically-operated valve using same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diaphragm and hydraulically-operated valve using same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3627284