Pump

Details Pump Pump

1987-10-28

1990-08-14

Sholl, Linda J.

Baths, closets, sinks, and spittoons

Flush closet

With holding tank

4317, 4308, 4410, 417472, E03D 100

Patent

active

049474910

ABSTRACT:
A pump comprising a flexible member defining at least part of a variable volume pumping chamber, an inlet valve to permit of liquid to enter the chamber thereby and an outlet valve to permit of liquid to leave the chamber thereby, and an operating member to deform the flexible member to vary the volume of the pumping chamber to pump liquid into and out of the chamber.

REFERENCES:
patent: 193145 (1877-07-01), Collins
patent: 859914 (1907-07-01), Buder
patent: 2943577 (1960-07-01), Barker
patent: 2953223 (1960-09-01), Dillenburger et al.
patent: 3180566 (1965-04-01), Murat et al.
patent: 3501778 (1970-03-01), Minniear et al.
patent: 3634891 (1972-01-01), Kemper
patent: 3662888 (1972-05-01), Kemper
patent: 3818806 (1974-06-01), Fumagalli
patent: 3860974 (1975-01-01), DeVries et al.
patent: 4028747 (1977-06-01), Newton
patent: 4091488 (1978-05-01), Artzberger
patent: 4162549 (1979-07-01), Charles et al.
patent: 4313233 (1982-02-01), Roberts

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