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
Semiconductor device, integrated circuit and method of manufacturing an integrated circuit
Robot control device
Method of modified facies proportions upon history matching of a geological model
Polyureas made from aminocrotonates and enaminones
Automatic actuator for breakers or switches
Inhibitor of casein kinase 1delta and casein kinase 1E
  Randomly Featured Patents
Computerized binoculars
Semiconductor device having identification number, manufacturing method thereof and electronic device
Belt sword system
Method of purging ink passages of an ink jet recording device
Optical interferometer measurement apparatus and method
Removal of phosphorus-containing compounds from an olefin feedstock
Reiterative method for screening combinatorial libraries
Method for producing semiconductor device
Handle-operated locking device for tilt steering column
Semiconductor device including capacitor element and method of manufacturing the same