Vacuumizer valve assembly

Details Vacuumizer valve assembly Vacuumizer valve assembly

1991-01-30

1992-04-07

Nilson, Robert G.

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

92 138, 251285, 452 35, F16K 31122

Patent

active

051020947

ABSTRACT:
An improved vacuumizer valve assembly is provided which permits precise, infinite valve adjustment from outside of a vacuumizer apparatus, thus eliminating the need to open the vacuumizer chamber during adjustment procedures. The valve assembly of the invention preferably includes a piston and cylinder assembly operated valve member, with a threadably shiftable adjustment stop coupled with the piston and cylinder assembly. During adjustment procedures, the stop is shifted as necessary to thereby alter the stroke length of the valve assembly and thereby the maximum valve clearance achieved when the valve is opened.

REFERENCES:
patent: 2492873 (1949-12-01), Lamb
patent: 3175473 (1965-03-01), Boteler
patent: 4974292 (1990-12-01), Currier
Marlen Research Corporation "Vaccumizer 550" brochure; (undated).
Marlen Research Corporation "Vaccumizer Cover Illustration Model 550" Drawing No. DI 646437B; Jan. 7, 1988.

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