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:
Mar. 24, 1987
Filed:
Apr. 23, 1985
Masashi Makino, Toyonaka, JP;
Kunio Nakada, Suita, JP;
Isao Muragishi, Osaka, JP;
Syozi Nishitani, Higashiosaka, JP;
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
An edge-rounding method and an apparatus therefor, for chamfering the peripheral edge of a workpiece having a planar surface by causing the peripheral edge to be be engaged under pressure with a grinding surface of a grinding device. The grinding device employed is of two types, one type being a grinding cylinder having a grinding surface and the other type being an abrasive tape having an abrasive surface and moved around a rotary drum. The edge-rounding is performed on the workpiece so as to satisfy the relationship of [(x/r)-(L/2r)]<0.015, wherein r represents the radius of the grinding surface, L represents the minimum dimension of the planar surface during the rotation of the workpiece and x represents the distance between the plane in which the workpiece pivots and the axis of rotation of the grinding device.