Equipment for engaging a safety braking device for a lift cage

Elevator – industrial lift truck – or stationary lift for vehicle – Having specific means contacting or on load support for... – Includes movable contact component on support for engaging...

Reexamination Certificate

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Details

C187S370000, C187S374000, C187S375000, C187S376000, C188S187000, C188S188000, C188S189000

Reexamination Certificate

active

07128189

ABSTRACT:
A tripping device for engaging an elevator lift cage safety brake has actuating levers arranged at a rotary axle for engaging safety brake wedges of the safety braking device. Each actuating lever has a longitudinal slot matched to the diameter of the rotary axle, wherein the actuating lever is freely movable in the direction of the rotary axle and in the direction of the length of the actuating lever. A torsion spring fixes the actuating lever about the rotary axle. One spring end presses the actuating lever downwardly, wherein the movement of the actuating lever is limited by a lower abutment. The other spring end is detachably connected to a support. An upper abutment limits the movement of the actuating lever upwardly. The lower abutment and the upper abutment are each held at a respective end of a T-shaped shackle, wherein the shackle is fixedly connected to the rotary axle. The freely movable actuating levers facilitate access to the safety brake wedges of the safety braking device and prevent erroneous tripping.

REFERENCES:
patent: 1678031 (1928-07-01), Anderson
patent: 1789008 (1931-01-01), Lindquist
patent: 1803762 (1931-05-01), Alexander
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patent: 5096020 (1992-03-01), Korhonen
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patent: 5937973 (1999-08-01), Liebetrau
patent: 81212 (1983-06-01), None
Patent Abstracts of Japan, pub. No. 09240952, Sep. 16, 1997, “Safety Device of Elevator”, Toshiba Corp.
Patent Abstracts of Japan, pub. No. 2000219450, Aug. 8, 2000, “Elevator Device”, Toshiba Elevator Co Ltd.

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