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US 4,899,852 AGranted
Elevator car mounting assembly
AssigneeOtis Elevator Company
InventorsJohn K. Salmon, Young S. Yoo
Life of this patent
Estimating the term…
Abstract
The elevator car is disposed in a frame which moves on rails through the elevator hoistway. A pendulum mount is used to mount the car in the frame so that the car is free to swing within the frame in pendulum fashion. Both lateral and torsional swinging movement of the car within the frame are controlled. A combination spring/damper assembly interconnects the car and the frame to control such lateral movements of the car whereby the car is softly stabilized within the frame.
Claims10
An elevator car assembly comprising:
- (a) a frame adapted to travel through an elevator hoistway;
- (b) an elevator car for holding passengers;
- (c) pendulum means for mounting said elevator car in said frame in pendulum fashion whereby said elevator car can move laterally within said frame;
- and
- (d) damping means interconnecting said frame and said elevator car for damping lateral movement of said elevator car through a 360.degree. lateral arc, said damping means including means for acting as a spring when said frame is subjected to substantial shocks in the hoistway, and for acting as a damper when the frame is subjected to smaller shocks in the hoistway, said damping means comprising a plurality of pneumatic dashpots operable to induce only laminar internal airflow when subjected to the full range of lateral forces normally encountered during operation of the elevator car assembly in the hoistway.
2 more elements
An elevator car assembly comprising:
- (a) a frame adapted to travel through an elevator hoistway;
- (b) an elevator car for holding passengers;
- (c) pendulum means for mounting said elevator car in said frame in pendulum fashion whereby said elevator car can swing laterally within said frame;
- and
- (d) spring/damper means interconnecting said frame and said elevator car for moderating lateral swinging of said elevator car in said frame, said spring/damper means operating in linear directions, and having a plurality of operating directions angularly offset from each other so as to moderate linear lateral swinging of said elevator car throughout a 360.degree. horizontal arc, and also moderate horizontal curvilinear torsional swinging of said elevator car in both the clockwise and counterclockwise directions, said spring/damper means comprising a plurality of pneumatic dashpots each having a cooperating piston and cylinder, and wherein each of said operating directions is defined by a stroke direction of at least one of said pistons.
2 more elements
Dependencies are inferred from the claim text.