Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Chain link
Image-processing method and program, and image-processing apparatus
Voltage generating system and memory device using the same
Base station, relay station, and bandwidth allocation method
Nonvolatile semiconductor memory device and method for manufacturing the same
Touch panel structure and manufacturing method thereof
Biaxially oriented hydrolysis-stable polyester film comprising epoxidized fatty acid derivatives and a chain extender, and process for production thereof and use thereof
  Randomly Featured Patents
Ball bearing for high rotational speeds
Ski boot
Optical device
Phase locked loop having fast frequency lock steering circuit
Distributed resource reservation in a wireless adhoc network
Method and arrangement for controlling a light switch for optical signals
Unsaturated cyclic and acyclic carbamates exhibiting taste and flavor enhancement effect in flavor compositions
Forging-by-copying-proof prints
Arrays of protein-capture agents and methods of use thereof
Sucrose derivatives