Resources Contact Us Home
Pump barrel valve assembly including seal/actuator element

Image Number 14 for United States Patent #5628624.

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 asymmetrically with respect to the vertical axis through the center line of the ball.

  Recently Added Patents
Identification wristband
Non-aqueous electrolyte battery
Image processing device and information storage medium including motion vector information calculation
Uplink interference mitigation method and apparatus
Method of inspecting wafer
Semiconductor device
Snapshots in de-duplication
  Randomly Featured Patents
Fastener system with expandable nut body
Digital phase lock loop for TIM frequency
Machine tool with automatic tool change apparatus
Dampening system roller for offset printing presses
Apparatus for providing fast memory decode using a bank conflict table
Adaptive resistor trimming circuit
Self-emptying container
Guide for a cutting torch
Radiation image storage and reproduction system
Reusable display sign or card having alphanumeric information