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:
May. 14, 1991
Filed:
Feb. 26, 1990
Keiichiro Nakai, Tokyo, JP;
Yoshinori Nakanishi, Shibayama, JP;
Otis Elevator Company, Farmington, CT (US);
Abstract
A supporting member is fixed to the moving element of a toroidal type linear motor, the support member being maintained a predetermined distance from a stationary element to maintain a predetermined annular air gap between the stationary and moving member. The supporting member may comprise a plurality of rollers which are rotatably provided on the top and bottom of the moving element, the rollers being so arranged as to be radially spaced from the stationary element. The distance between the rollers and the stationary element is less than the distance between the stationary and moving elements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile