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:
Jan. 16, 1990
Filed:
Oct. 21, 1988
Applicant:
Inventors:
Hiroyuki Sugibuchi, Saitama, JP;
Juji Akiba, Saitama, JP;
Assignee:
Junkosha Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338-9 ; 338 28 ; 338 / ;
Abstract
An oil leakage detection device is provided having a detection unit comprising: (a) an oil leakage detecting sensor which exhibits a positive resistance-temperature characteristic in response to changes in temperature, connected, in series, to (b) an oil leakage detecting sensor which exhibits a negative resistance-temperature characteristic in response to changes in temperature.