OTR safety urinal pumps

Details OTR safety urinal pumps OTR safety urinal pumps

1988-04-14

1989-11-07

Croyle, Carlton R.

Pumps

Expansible chamber type

Mechanically actuated distributor

417520, 4431, 4453, F04B 700

Patent

active

048788198

ABSTRACT:
A tie rod type cylinder valved at its lower plate and having a receiver on its upper plate. A rod-less trunk-like piston containing an inlet valve with a stem projecting out of the cylinder and connected with an actuator. The piston face having an opening acting as a valve seat. A capillary vent tube connecting the top of the cylinder with the mouth of the receiver. When the cylinder is filled to a stop, the actuator is activated, which closes the inlet valve and drives down the stem/valve/piston and it evacuates the cylinder. A flexible discharge line conveys the liquid into a nearby drain pipe or receptacle.

REFERENCES:
patent: 535241 (1895-03-01), Fischer
patent: 2807025 (1957-09-01), King
patent: 2815511 (1957-12-01), Friedman
patent: 4164795 (1979-08-01), Johnson
patent: 4595346 (1986-06-01), Bozoyan
patent: 4678589 (1987-07-01), Ayres, Jr,
patent: 4792289 (1988-12-01), Nieratschker

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