Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Dry-cooling unit with gravity-assisted coolant flow
Concentrating photovoltaic system module with actuator control
Asynchronous loading of scripts in web pages
Single-electron detection method and apparatus for solid-state intensity image sensors with a charge splitting device
X-ray imaging
Solid-state imaging device
Vehicle window opening and closing control device
  Randomly Featured Patents
Restoration of conversation stub for recognized experts
Copyright management method, information recording/reproducing method and device, and information recording medium and method of manufacturing the medium
Illuminated coaster
Method and programmable device for triangle interpolation in homogeneous space
Machine fault diagnostics system and method
Pneumatic radial tires
Automatic identification of cuff size in automated blood pressure monitors
Toy UFO
Electron emission display device and control method of the same
Wheel