Invention Grant
- Patent Title: Brake operation management in elevators
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Application No.: US16295327Application Date: 2019-03-07
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Publication No.: US10538412B2Publication Date: 2020-01-21
- Inventor: Amir Lotfi , Randall Keith Roberts , Ronnie E. Thebeau , Michael Garfinkel , Edward Piedra , Dennis Hanvey , Daniel Rush
- 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: Cantor Colburn LLP
- Main IPC: B66B1/36
- IPC: B66B1/36 ; B66B1/40 ; B66B1/44 ; B66B1/30 ; B66B1/32 ; B66B9/00

Abstract:
A method includes determining that an elevator car is arriving at a landing at which re-leveling is anticipated; upon the elevator car arriving at the landing at which re-leveling is anticipated, initiating the at least one of a brake cycling operation and a power cycling operation to reduce elevator car sag at the landing; monitoring transfer of weight to or from the elevator car at the landing over a period of time; terminating the at least one of the brake cycling operation and the power cycling operation upon at least one of (i) the transfer of weight to or from the elevator car at the landing over the period of time being less than a threshold and (ii) the elevator car sag at the landing meeting a sag threshold.
Public/Granted literature
- US20190202658A1 BRAKE OPERATION MANAGEMENT IN ELEVATORS Public/Granted day:2019-07-04
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