Pump barrel seal assembly including seal/actuator element

Details Pump barrel seal assembly including seal/actuator element Pump barrel seal assembly including seal/actuator element

1995-04-05

1996-07-09

Casaregola, Louis J.

Pumps

Expansible chamber type

Relatively movable serial distributors

417507, 417554, 1375123, F04B 5312

Patent

active

055338763

ABSTRACT:
Disclosed is an assembly for unseating a seated traveling valve ball, and pumps utilizing such an assembly. The assembly generally includes a tubular member having therein a piston with an actuator for engaging the ball. Mechanical advantage is provided either by providing a sealing area of the piston that is greater than the sealing area of the seat valve and/or by providing a engaging member suitable to strike to seated ball asymetrically with respect to the vertical axis through the center line of the ball.

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