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. 16, 1985
Filed:
Jun. 17, 1982
Karel N Vermeiren, Woerden, NL;
Hendrik Dolfsma, Nieuwegein, NL;
Abstract
A system for measuring the variation in the capacitance of a bearing installed on a shaft in a housing. It is shown to include an electrically conductive measuring ring interposed between the bearing and the housing, an insulating layer surrounding the measuring ring wherein the insulating layer between the bearing and the measuring ring is considerably thinner than the remaining portion of the insulating layer, and measuring means connected to the measuring ring and the shaft to measure the variations in the capacitance of the bearing. In such a system, capacitance measurements are made without significant interference from the capacitance existing between the housing and the shaft.