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. 08, 1995
Filed:
Jun. 10, 1993
Toshitaka Shimomura, Kawasaki, JP;
Satoshi Adachi, Kawasaki, JP;
Toru Yaku, Kawasaki, JP;
Tatsuhiko Matsuura, Kawasaki, JP;
Osamu Kawatoko, Kawasaki, JP;
Mitutoyo Corporation, Tokyo, JP;
Abstract
A capacitance-type measuring device for absolute measurement of positions is disclosed, which comprises a displacement sensor having a fixed element and a movable element, the movable element being capacitance-coupled to the fixed element and relatively movable against the fixed element, the displacement sensor being adapted to output signals corresponding to relative positions of the movable element against the fixed element, a signal processing circuit for processing the output signals of the displacement sensor and outputting an absolute measurement value corresponding to displacement of the movable element against the fixed element, a control circuit for controlling the operations of the displacement sensor and the signal processing circuit, and a power supply for supplying electric power to the displacement sensor, the signal processing circuit, and the control circuit, wherein the control circuit activates the signal processing circuit at a suitable interval so as to perform an intermittent measurement operation.