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. 11, 2001
Filed:
Dec. 03, 1998
Fusayoshi Aruga, Nagano, JP;
Mitsuo Yokozawa, Nagano, JP;
Sankyo Seiki Mfg. Co., Ltd., Nagano-ken, JP;
Abstract
A surface profile detecting device comprises a plurality of bar-like cores disposed in a line with predetermined intervals in a predetermined disposing direction. Each core has tip ends that are arranged on a single plane and which face a surface of an object to be measured having recesses and protrusions in a magnetic field such that they are relatively movable in a direction orthogonal to said disposing direction. The detecting device also includes detecting arrangement provided in each of the bar-like cores for detecting changes in magnetic flux generated due to the uneven profile of the object to be measured. An A/D converting device is provided for A/D converting the output of the detecting arrangement with a predetermined timing. A memory is also provided for storing the output from the AND converting device. The uneven profile of the object to be measured in a predetermined range is detected from the data stored in the memory.