Stopping of elevators in the up direction

Details Stopping of elevators in the up direction Stopping of elevators in the up direction

1992-09-08

1994-05-03

Dayoan, D. Glenn

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 71, 187 75, 187 79, B66B 528

Patent

active

053079043

ABSTRACT:
A stopped plate is provided in the overhead area in an elevator hoistway above the uppermost landing in the building. The stopping plate is mounted in the hoistway and is operable to stop upward movement of the elevator cab and counterweight without impacting the main components of the cab or counterweight. In one embodiment of the invention, there is provided a pair of inverted safeties mounted on the stopping plate and guide rails. If the cab rises above the uppermost landing, the safeties will be set by the cab contacting the stopping plate, thereby limiting further upward motion of the cab. In a second embodiment of the invention, the traction cables are provided with motion arresters such as enlarged clamps, which are secured to the cables a preset distance above the cab assembly. The cables pass through restricted openings in the stopping plate, which openings will not allow passage of the motion arresters. Motion of the traction cables is thus arrested when the cable clamps encounter the stopping plate.

REFERENCES:
patent: 249076 (1881-11-01), Moulton
patent: 673301 (1901-04-01), Steinfeld et al.
patent: 688601 (1901-12-01), Dean
patent: 700458 (1902-05-01), Trapp
patent: 1929672 (1933-10-01), Brannon
patent: 1932060 (1933-10-01), Arnold
patent: 3674117 (1972-07-01), Sjostrom et al.

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