Resources Contact Us Home
Thermally activated trigger device

Image Number 2 for United States Patent #4762662.

A thermally activated trigger device 10 comprises a pressurized closed vessel 11 with a piston 12 slideably mounted in it to divide it into two compartments 14 and 16. A fluid such as an inert gas is contained within the compartments at substantially the same pressure. One end of one of the compartments has venting means 24, such as a normally closed pipe which vents the fluid from the compartment once the pipe becomes open by rupture or melting at an elevated temperature. The resulting pressure difference between the compartments on venting of the fluid moves the piston which is connected to an actuator means for performing a desired control or safety shut-down function. The trigger device is useful for performing many control and safety shut-down functions, particularly for rendering a nuclear space reactor subcritical upon reentry to the earth's atmosphere.

  Recently Added Patents
Memristive junction with intrinsic rectifier
Label with surface ornamentation
Method and an apparatus for processing an audio signal
Cover panel for frame based door lock
Adjusting dental prostheses based on soft tissue
Support core for cold shrink tube
Polymer composites having highly dispersed carbon nanotubes
  Randomly Featured Patents
Tissue roll holder
Methods, systems, and products for classifying content segments
Multi-head linear motor with cores
Process for preparing-1-ethyl-5-hydroxypyrazole
Support device for cantilever toilet bowl
Semi-continuous process for synthesis of polybenzazole polymers
N-sulfonyldicarboximide containing tethering compounds
Hydrographic buoy
Trench MOSFET with deposited oxide
Electronic predator replica