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:
Apr. 17, 1979
Filed:
Jan. 25, 1978
Applicant:
Inventors:
Tiaki Mizuno, Toyota, JP;
Yoshichi Kawashima, Gifu, JP;
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60Q / ; G08B / ; G08B / ;
U.S. Cl.
CPC ...
340 / ; 340642 ; 340331 ; 340 73 ; 3152 / ;
Abstract
An improved method and apparatus for use in the direction indicating system of a vehicle having a group of front, rear and side directional lamps. The directional lamps are connected in parallel with each other to be energized by a battery through a current detecting resistor, a normally-closed relay and a selection switch. The relay is energized to open periodically in response to a train of pulses so that the directional lamps flash periodically during closure of the selection switch. Closure of the selection switch is detected in response to the voltage across the current detecting resistor to generate the pulses applied to the relay.