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:
Aug. 21, 2007
Filed:
Apr. 27, 2005
Rudolf Neumann, Spaichingen, DE;
Rudolf Neumann, Spaichingen, DE;
Minebea Co., Ltd., Nagano-ken, JP;
Abstract
A device to measure a fluid dynamic bearing system, particularly the inside diameter of the bearing bore of a bearing sleeve or the outside diameter of a shaft using a sensor element. A capacity acting sensor element is used to determine, for example, the inside diameter of the bearing bore, the sensor element being designed as part of the surface of a shaft prepared for measurement purposes. To determine the outside diameter of the shaft, the sensor element is correspondingly designed as part of the surface of the bearing bore of a bearing sleeve prepared for measurement purposes. Means of introducing a measuring fluid, preferably compressed air, into the bearing gap remaining between the bearing sleeve and the shaft are provided so that during the measurement process the shaft is automatically aligned and centered within the bearing bore.