Valves and valve actuation – Fluid actuated or retarded – Flexible wall expansible chamber reciprocating valve actuator
Patent
1974-04-25
1976-02-03
Klinksiek, Henry T.
Valves and valve actuation
Fluid actuated or retarded
Flexible wall expansible chamber reciprocating valve actuator
F16K 31145
Patent
active
039360296
ABSTRACT:
The present invention relates to a pneumatic amplifier of the type having a main internal chamber with a thin imperviable member extending thereacross. The thin imperviable member responds to and amplifies a wide range of pressure input signals supplied to the main internal chamber of the pneumatic amplifier valve.
In effect, the imperviable member separates the main internal chamber into two compartments. The first compartment receives the pressure input signals which are to be amplified, and the other compartment on the opposite side of the imperviable member receives a steady flow of air from an air supply. Consequently, the imperviable member assumes an operative profile or contour due to the air pressure present in each of the two compartments.
A portion of the compartment channeling the air supply through the valve represents a positive and linear amplification of the particular pressure gain signal being applied to the valve. It was discovered that the particular gain of the pneumatic of the present invention could be varied and changed by effecting a change in the operative contour or profile of the imperviable member. To accomplish this, the pneumatic valve of the present invention includes a threaded shaft having a generally rounded head secured to the interior end thereof. By adjustably moving the threaded shaft, the generally rounded head engages the imperviable member and depresses or changes the contour of the valve to effectuate a change or varyance in gain.
REFERENCES:
patent: 3415275 (1968-12-01), Berggren
patent: 3490479 (1970-01-01), Mott et al.
patent: 3707982 (1973-01-01), Hogel
patent: 3792720 (1974-02-01), Robbins
patent: 3844529 (1974-10-01), Brandt et al.
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