Safety brake

Details Safety brake Safety brake

1992-07-24

1993-06-29

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 89, 188184, B66B 1104

Patent

active

052225780

ABSTRACT:
A safety brake of the type for use in hoist. As a hoist cage descends or ascends faster than a predetermined safety speed, a corresponding high speed motion is transmitted to a main shaft of the safety brake through a input pinion gear connected to the main shaft for engagement with a vertical rack attached to a hoist tower. Movable braking disks are attached to the main shaft for rotation therewith. Fixed braking disks are interleaved with the movable disks. Such high speed motion causes a dog retained in the main shaft to centrifugally move outwardly to engage the drum. The actuator assembly connected to the drum acts to cause the drum to move against the fixed and movable braking disks.

REFERENCES:
patent: 3415343 (1968-12-01), Svensson
patent: 3866717 (1975-02-01), Johansson
patent: 4531617 (1985-07-01), Martin et al.

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