The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 07, 1996
Filed:
May. 26, 1995
Toru Okamoto, Fujieda, JP;
Murakami Kaimeido Co. Ltd., Shizuoka, JP;
Abstract
The control device controls an electrically powered foldable rearview mirror in which a mirror body is reversibly rotatable around a shaft by an electric motor contained in the mirror body and in which the mirror body rotation is stopped in a predetermined erected position and folded position by rotation stop devices. The control device for controlling mirror rotation includes a switching circuit for switching the power supply connections to the motor to rotate the mirror body in one of two direction, a relay circuit for supplying and cutting off power to the motor and a relay control circuit connected to the relay circuit and the motor. The relay control circuit includes a resistance and a semiconductor device for switching the relay control circuit connected in parallel with the resistance to perform a switching operation when the motor driving electric current is increased due to a stoppage of the mirror body rotation which causes the voltage drop across the resistance to exceed a threshold voltage of the semiconductor device and to open or release the relay cutting off current to the motor.