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. 28, 1992
Filed:
Dec. 13, 1990
Applicant:
Inventors:
Shigeru Sakagami, Nagoya, JP;
Yoshiaki Nagasawa, Toyota, JP;
Assignee:
Toyota Shatai Kabushiki Kaisha, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 12 ; 318135 ; 104281 ; 310105 ;
Abstract
In a moving magnet type linear motor for automatic door of the invention, a stator fixed inside a guide rail having a substantially .andgate.-shaped cross section and a moving unit having a substantially U-shaped cross section are combined so that a height of the linear motor can be the same as that of the guide rail and the moving unit is supported slidably relative to the guide rail and fixing members of the stator has at least the both longitudinal ends or the stroke ends formed of non-magnetic conductive materials in order that the moving magnet type linear motor for automatic door produces only a low sound and is durable.