In-line hand pump device

Details In-line hand pump device In-line hand pump device

1992-03-03

1993-04-13

Bertsch, Richard A.

Pumps

Convertible to apparatus of a different class

417546, F04B 4100, F04B 2104

Patent

active

052016390

ABSTRACT:
A device for providing auxiliary pumping capabilities for a sump pump system and other low volume pumping systems. The in-line pumping device includes a tubular element with threaded ends to be mounted in the discharge pipe line of a sump pump system. A piston in the tubular element may be reciprocated by manually moving a drive shaft extending laterally from the piston through a threaded boss in the tubular element. A valve means permits the unidirectional flow of fluid through a center bore in the piston. If the electric pump is inoperable, the manual pump of the present invention may be used to pump liquid from the sump through the discharge pipe line.

REFERENCES:
patent: 2648581 (1953-08-01), Karow
patent: 2928375 (1960-03-01), Herrmann
patent: 3684410 (1972-08-01), Fitzgerald
patent: 3787149 (1974-01-01), Dane
patent: 4102427 (1978-07-01), Sabec
patent: 4679452 (1987-07-01), Stoll

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