Dishwasher with discharge pump and nonreturn valve

Details Dishwasher with discharge pump and nonreturn valve Dishwasher with discharge pump and nonreturn valve

1991-12-13

1992-07-21

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

134183, 134186, 1375272, 137584, F16K 1516

Patent

active

051314320

ABSTRACT:
A dishwasher with a wash tub (3) connected on the bottom to a collection well (4) into which extends the outlet duct (8) of a discharge pump (6) fitted with a nonreturn valve (11) accessible from the inside of the wash tub. The valve consists of a box-like housing (12) made in one piece with the outlet duct (8) which, in turn, is made in one piece with the well (4). The valve (11) has a flat flexible-membrane plug (18) with a tail (19) hooked to a peg (21) made in one piece with the box-like body (12). A protrusion (22) of the cover (13) for the box-like body (12) is in contact with the peg (21) to block the membrane (18) in position.

REFERENCES:
patent: 2867213 (1959-01-01), Thomas
patent: 3292658 (1966-12-01), Scaramucci
patent: 4141381 (1979-02-01), Eminger
patent: 4467627 (1984-08-01), Platt

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