Resources Contact Us Home
Secure fire hydrant cap

Image Number 5 for United States Patent #7797972.

A security device for engaging a threaded element includes an inner body configured to engage the threaded element and an outer body operatively coupled to the inner body. A pin is operatively coupled to the inner body and movable between an extended position and a retracted position such that the outer body moves relative to the inner body when the pin is disposed in the retracted position and the outer body and the inner body are operatively coupled for simultaneous movement when the pin is disposed in the extended position.

  Recently Added Patents
Power management systems and designs
Display apparatus, a method for a display control, and program
Internal wiring structure of semiconductor device
Calibration device and related method for phase difference between data and clock
High porosity ceramic honeycomb article containing rare earth oxide and method of manufacturing same
Methods and devices for enforcing network access control utilizing secure packet tagging
Method and apparatus for detection of the remote origin fraction of radon present in a measuring site
  Randomly Featured Patents
Control console
Method of detecting failure in a secondary air supply system for internal combustion engines
Hydraulic drive system
Combined chain and support hook for an automobile jack
Magnetic head slider employing superconductor for levitation
Method and apparatus for forming glass fibers
Method of converting 4:2:0p/4:2:2p progressive scan data and converter
Tufting machine yarn feed roller assembly
Hippeastrum (amaryllis) plant named `Rozetta`