Patent ID: 6715368
Filing Date: 2004-04-06
Classification: B62D,G01D

Abstract:
A rotation sensor comprising:a base plate that is rotatable; an electrical resistor formed on a surface of said base plate so as to extend in a rotating direction of said base plate; a holder disposed near said base plate; and a contact member fixed at one end portion thereof to said holder and provided at another end portion with a contact, said contact member having an arm portion thereof extending between these end portions of said contact member, wherein rotation of said base plate causes relative sliding motion between said contact and said electrical resistor, with said contact being in electrical contact with said electrical resistor, said arm portion has asymmetric widthwise weight distribution about a longitudinal axis of said contact member, and information on the rotation of said base plate, produced during the relative sliding motion between said contact and said electrical resistor, is taken out from said contact member in a form of electrical signal.