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:
Jul. 06, 1993
Filed:
Sep. 18, 1991
Manabu Shiraki, Yamato, JP;
Osami Miyao, Yamato, JP;
Masayuki Ohsaka, Sagamihara, JP;
Masayuki Fujiwara, Hadano, JP;
Daishi Yamaguchi, Sagamihara, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Shicoh Engineering Co., Ltd., Kanagawa, JP;
Abstract
Disclosed herein is a linear d.c. motor comprising a field magnet composed of plural magnetic poles, and an armature formed by arranging armature coils along the moving direction of a moving element at a position facing the field magnet. One of the field magnet and armature is attached to the moving element, and the other is provided on a stator yoke serving as a stator. Projecting edges for linear guide, each of which projects outside and has a triangular form in cross section, are provided on both sides of the stator yoke, and guide rollers, each of which has an engaging groove in the form of a valley in its side part coming into slidable contact with the projecting edge for linear guide, are attached to the moving element. There is no possibility that the moving element is derailed because it is supported by the projecting edges of linear guide and the guide rollers. It is therefore possible to make the thrust of the moving element greater and cause it to travel at high speed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile