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:
Sep. 10, 2013
Filed:
Sep. 24, 2009
Toru Takahashi, Iwata, JP;
Kentarou Nishikawa, Iwata, JP;
Toru Takahashi, Iwata, JP;
Kentarou Nishikawa, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A lubricant deterioration detecting device includes an arcuate optical fiber having one end positioned in face-to-face relation with a light emitting element and also having the opposite end positioned in face-to-face relation with a light receiving element, and a measuring gap for intervening a lubricating agent is provided in a portion of the arcuate optical fiber. In the vicinity of the measuring gap, a resistance element, the amount of deformation of which varies with change in state of lubrication performed with the lubricating agent, is provided for flowing of the lubricating agent within the measuring gap.