Pulseless piston pump

Details Pulseless piston pump Pulseless piston pump

1990-11-08

1992-09-08

Bertsch, Richard A.

Pumps

Expansible chamber type

Plural pumping chambers

417568, 417430, 417439, 92 865, F04B 2100, F04B 2304, F04B 3910, F01B 3100

Patent

active

051453398

ABSTRACT:
A multiple piston cylinder reciprocating pump is provided with a cam drive such that the sum of the velocities during the pumping strokes of all of the cylinders is generally constant. The leak free design is provided by utilizing a diaphragm attached to the piston between the main seal assembly and the cam. A flow through intake design is provided which flows incoming material around the piston between the diaphragm and the main seal to prevent the build-up and hardening of material on the piston and in the seal area. The intake and exhaust passages are arranged such that air pockets cannot be formed and any air bubbles which find their way into the pump will rise upwardly out of the pump without restriction.

REFERENCES:
patent: 2711137 (1955-06-01), Moller
patent: 3680985 (1972-08-01), Ginsberg et al.
patent: 3945768 (1976-03-01), Gueorgi
patent: 4173437 (1979-11-01), Leka et al.
patent: 4453898 (1984-06-01), Leka et al.

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