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:
Jun. 08, 1993
Filed:
Oct. 20, 1992
Tsutomu Shiina, Kawasaki, JP;
Eiji Narumi, Tokyo, JP;
Otis Elevator Company, Farmington, CT (US);
Abstract
An overspeed device is provided for an elevator system having an elevator car for travel within a hoistway along a guiderail. The elevator includes a governor rope running from an upper sheave at the top of the hoistway to a governor sheave at the bottom of the hoistway. The overspeed device comprises a centrifugal actuator and a gripping apparatus. In the event of an overspeed condition, the actuator actuates the gripping apparatus which in turn grips the governor rope exiting the governor sheave upwardly toward the upper sheave. The rope, now moving relative to the elevator car, operates a safety attached to the elevator car, thereby safely stopping the car.