Resources Contact Us Home
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
Method and apparatus for managing network traffic
Encoding method, decoding method, encoding device, decoding device, program, and recording medium
Devices and methods for the production of coaxial microfibers and nanofibers
Method and apparatus for closed-loop control of anti-tachyarrhythmia pacing using hemodynamic sensor
Aware manufacturing of integrated circuits
Dual functional medium shredding machine structure
Dynamic rebasing of persisted time information
  Randomly Featured Patents
Steerable wheel assembly with damping and centering force mechanism for an in-line skate or roller ski
Wall mountable support
Boxing dummy apparatus
High-power rescue tool
Polymerization process employing transition metal catalyst and polymer produced
Motor vehicle cover with low profile housing
Round baler
Torque shaft and torque shaft drive
Multifunctional peripheral print container modification
Ion source frequency feedback device and method