Elevator safety

Details Elevator safety Elevator safety

1990-08-03

1991-03-26

Olszewski, Robert P.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 20, 187 30, 187 38, 187 88, 188 76, B66B 522

Patent

active

050021583

ABSTRACT:
A safety braking disk (56) is secured to rope drive sheave (14). First (52) and second (54) safety brake assemblies each operate on opposing parallel sides of the disk. Brake pads (60) are resiliently placed into engagement upon initiation of the safety. The safety is initiated upon car overspeed, movement with open car doors, or excess velocity in the leveling zone.

REFERENCES:
patent: 3171348 (1965-03-01), Wetzer
patent: 3516304 (1970-06-01), Vermette
patent: 3762512 (1973-10-01), McIntyre
patent: 3819015 (1974-06-01), Silberschlag
patent: 4538706 (1985-09-01), Koppensteiner
patent: 4928796 (1990-05-01), Poon

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