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. 22, 2001
Filed:
Oct. 31, 1997
Applicant:
Inventor:
Yasuhiro Hattori, Nagoya, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H 4/732 ;
U.S. Cl.
CPC ...
H01H 4/732 ;
Abstract
A relay driving circuit comprises, in addition to an in-car battery, a low-voltage power supply outputting a voltage lower than an output voltage of the in-car battery and higher than a relay actuating voltage. The output voltage of the low-voltage power supply is applied to a coil of a relay. Alternatively, the output voltage of the in-car battery may be applied to each relay coil for turning on the relay contacts, then the output voltage of the low-voltage power supply is applied to maintain the turning-on state of the relay.