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
Active constant power supply apparatus
Performance monitoring of advanced process control systems
Multiple input multiple output transceiver
Image capture apparatus and program
Calcium carbonate granulation
System and method for generating profile morphing using cephalometric tracing data
Tool bag with removable tool wall
  Randomly Featured Patents
Direct assay of cholesterol in skin removed by tape stripping
Ionomer resins as interlayers for use with imbedded or attached IR reflective or absorptive films in laminated glazing applications
Flash memory device and method for manufacturing the same
Handheld ultrasonic thickness testing and measuring device
Method and apparatus for circuit design and retiming
Process for making polyolefins
Compact easily parseable binary format for a context-free grammer
Chemical planarization performance for copper/low-k interconnect structures
Tracking servo system for an information recording disc player
Installation for palletising flat pieces