Resources Contact Us Home
Relative motion sensor

Image Number 2 for United States Patent #4888991.

A relative motion sensor sensing relative vibratory motions between two objects comprises a pair of eleongated members joined to one another at the first extremities thereof and respectively include a fastening means disposed at the second extremities thereof opposite to the first extremities for affixing the second extremities to the two objects under the relative vibratory motion. A Piezo electric element is confined in a space between the two elongated members adjacent to the joined first extremities thereof, wherein the relative vibratory motions transmitted to the second extremities of the two elongated members alternately change the pressure exerted on the Piezo electric element by the two elongated members and, consequently, the Piezo electric element generates alternating electromotive forces representing the relative vibratory motions.

  Recently Added Patents
Real-time demand prediction in a fast service restaurant environment
Semiconductor device and manufacturing method
Blur correction device and imaging apparatus
Universal handle extension for unloading butterfly valve for tank trailer or other vehicle
Cooking brush
Ion implantation method and ion implantation apparatus
Cell proliferation inhibitor
  Randomly Featured Patents
Method and apparatus for controlling lateral unstable movement and camber of strip being rolled
Rear suspension system for bicycles
Probehead for nuclear magnetic resonance measurements
Stepper motor controllers
Air bag
Slotted integrated circuit resistor
Lottery card reader
Emulating different country keyboards for controlling a remote computer over a network
Administrative notes in network-based commerce facility