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:
Jan. 09, 2024
Filed:
Jul. 23, 2019
Hitachi, Ltd., Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
An elevator apparatus provided with a safety gear is disclosed which is adapted to prevent the turn-on of a brake state detection switch during power outage even while being operated by an electric actuator. This elevator apparatus includes: a safety geardisposed at a car; and an electric actuatorfor operating the safety gear. The elevator apparatus further includes a brake state detection switchfor detecting a brake state of the safety gear. The brake state detection switch is operated by a mechanismwhich operates the safety gear with an operation of the electric actuator. The brake state detection switch is in an off state for a displacement of the mechanism during interruption of power supply. The brake state detection switch is turned on for the displacement of the mechanism during the brake of the safety gear.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile