Invention Grant
- Patent Title: Safety brake configuration for elevator application
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Application No.: US15244703Application Date: 2016-08-23
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Publication No.: US11124386B2Publication Date: 2021-09-21
- Inventor: Richard N. Fargo , Duan Liang , Tahany Ibrahim El-Wardany , James M. Draper , Xiaodong Luo , Joe J. Liou
- Applicant: OTIS ELEVATOR COMPANY
- Applicant Address: US CT Farmington
- Assignee: OTIS ELEVATOR COMPANY
- Current Assignee: OTIS ELEVATOR COMPANY
- Current Assignee Address: US CT Farmington
- Agency: Bachman & LaPointe, P.C.
- Main IPC: B66B5/16
- IPC: B66B5/16 ; B66B5/18 ; B66B11/02 ; B66B9/00

Abstract:
An adjacent safety configuration for an elevator includes a second pair of safeties displaced from a first pair of safeties by at least 0.1 seconds of travel time at a rated speed of the elevator. An adjacent safety configuration for an elevator including a second pair of safeties displaced from the first pair of safeties to provide a predetermined time period before the second pair of safeties pass over a point on a guide rail previously passed over by the first pair of safeties to permit the guide rail surface to decrease by a predetermined temperature. A method of spacing an adjacent safety configuration for an elevator system including de-rating a pair of trailing safeties with respect to a pair of leading safeties as a function of a rated speed of the elevator and a spacing between the pair of trailing safeties and the pair of leading safeties.
Public/Granted literature
- US20170057783A1 SAFETY BRAKE CONFIGURATION FOR ELEVATOR APPLICATION Public/Granted day:2017-03-02
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