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:
Aug. 10, 1993
Filed:
Nov. 05, 1991
Masami Nomura, Inazawa, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A ropeless linear motor elevator system includes linear motor coils disposed along a guide rail for guiding an elevator car. A linear motor propulsion unit (14) including an operating bar movable relative to the car is mounted on the car for generating a car propulsion force in cooperation with the linear motor coils. The elevator car has mounted thereon a brake unit including a brake shoe engageable with the rail to stop the car and biasing member for urging the brake shoe toward the rail. The operating bar of the propulsion unit is movable between a first position in which the brake shoe engages the rail against the action of the biasing member and a second position in which the brake shoe is released from the rail by the action of the biasing member in response to a propulsion force acting on the propulsion unit.