Waterless urinal pumps

Details Waterless urinal pumps Waterless urinal pumps

1984-04-05

1986-06-17

Freeh, William L.

Pumps

Expansible chamber type

Mechanically actuated distributor

417328, 4431, 4432, 4435, 4301, F04B 700, E03D 1300, E03D 1100

Patent

active

045953465

ABSTRACT:
Two flanged sleeves, closed and valved at one end, and a bonnet with two gudgeons act as a cylinder-piston mechanism for pumping. The upper sleeve is movable and spring-loaded, accepts and is filled with liquid. When the bonnet is depressed, through its gudgeons, upper valve is closed, upper sleeve is pushed down, lower valve is constrained open, and the content is pumped into a discharge.

REFERENCES:
patent: 1465392 (1923-08-01), Goodfellow
patent: 1650155 (1927-11-01), Randle
patent: 2211823 (1940-08-01), Jepson
patent: 2368568 (1945-01-01), Poulter
patent: 3254607 (1966-06-01), Norton

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