Dispensing valve for liquids

Details Dispensing valve for liquids Dispensing valve for liquids

1979-02-22

1980-11-04

Schwadron, Martin P.

Valves and valve actuation

Sequential opening or closing of serial ports in single flow...

251284, 251325, 251353, 62342, 222524, F16K 3100, A23G 900

Patent

active

042315476

ABSTRACT:
A dispensing valve comprising: a first tubular member closed at one end by a wall; a second tubular member telescopically housed in said first tubular member and closed at the opposite end by a wall; said second tubular member being slidable with respect to said first member from a rest position in which it is housed inside said first tubular member into abutment against its end wall, to a position in which it projects out of said first tubular member; a piston like member secured to the closure wall of said first tubular member and capable of slidingly penetrating with a close fit into the tubular passage of said second tubular member for a distance shorter than the maximum sliding stroke of said second tubular member with respect to said first tubular member; a first radial inlet port in said first tubular member at a position near its closed end, and a second radial outlet port in said second tubular member at a position in which said outlet port is wholly housed inside said first tubular member in the said rest position.

REFERENCES:
patent: 247668 (1881-09-01), Loftus
patent: 605321 (1898-06-01), Lines
patent: 648455 (1900-05-01), Farson
patent: 1458718 (1923-06-01), Lord
patent: 2220170 (1940-11-01), Nelson
patent: 2379327 (1945-06-01), Waite
patent: 2916044 (1959-12-01), Phelan et al.
patent: 3476133 (1969-11-01), Stedfeld
patent: 3698206 (1972-10-01), Werner

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