Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Subsurface well apparatus










Image Number 19 for United States Patent #6055213.

Method and apparatus for actuating one or more downhole well tools carried by a production or workstring conduit having an imperforate wall and for blocking fluid communication between an activating fluid body and a second fluid source within said well across dynamic seals between actuating members of the well tool, by producing selective signals through the conduit wall detectable by a member to produce an activating signal for actuating the downhole well tool by a downhole energy source.








 
 
  Recently Added Patents
Apparatus and method for foreground detection
Limit switch
Embedded package and method for manufacturing the same
Extensible framework for client-based active network measurement
Automated user interface adjustment
Phenethanolamine derivatives for treatment of respiratory diseases
Pressure-sensitive adhesive composition for optical films, pressure-sensitive adhesive optical film and image display
  Randomly Featured Patents
Polarization independent optical amplifier apparatus
Method for controlling liquid level in a knot drainer
Female connector for self-locking connector system
Reticle-carrying container
Cam fixing construction for cam shaft
Resilient mount for MacPherson strut
Data entry and control arrangement for an appliance
Strain relieving holder for optical fiber cable
Array substrate, method of manufacturing the array substrate, and liquid crystal display device having the array substrate
Quality power from induction generator feeding variable speed motors