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.:

US 8120502 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 21, 2012

Filed:

Dec. 08, 2008
Applicants:

Yasutaka Usukura, Saitama, JP;

Kenichi Machida, Saitama, JP;

Inventors:

Yasutaka Usukura, Saitama, JP;

Kenichi Machida, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

To detect opening/closing of a neutral detection hydraulic switch by a detection apparatus and detect breakage of a wiring line connected between the detection apparatus and the switch. Since a second contact and an ECU are connected to each other by two wiring lines, even if one of the wiring lines is broken, opening/closing of the neutral detection hydraulic switch can be detected through the remaining one of the wiring lines. Since different voltages are applied to the wiring lines through resistance type voltage dividing circuits, the occurrence of the wire breakage can be detected making use of the fact that the voltage detected by the ECU upon opening of the neutral detection hydraulic switch when one of the wiring lines is broken is different from the voltage when none of the wiring lines is broken.


Find Patent Forward Citations

Usukura, Yasutaka. (2012). Switch opening/closing detection apparatus (U.S. Patent No. 8120502). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8120502

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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