Safety system for hoist apparatus

Details Safety system for hoist apparatus Safety system for hoist apparatus

1995-05-30

1998-04-07

Matecki, Katherine

Implements or apparatus for applying pushing or pulling force

Device or member for contacting and guiding moving cable

Including rotatable, cable contacting, pulley wheel element

B66D 306

Patent

active

057355070

ABSTRACT:
Safety system for hoist apparatus, used with all types of cranes employing a flexible element for the handling of a load, the device preventing the free fall of the load in the event of a flexible element rupture, where the flexible element (3) is conducted and guided in the interior of a housing, the system further comprising a pair of pulleys (4) and (5), tie-down mechanism capable of gripping the intact branches of the flexible element, and an activating mechanism which includes a latch, wherein in the normal working position, the flexible element freely circulates through the interior of the housing, and the latch (6) remains in a fixed position, and wherein the rupture of the flexible element displaces the latch, activating the system and gripping an intact portion of the flexible element with the tie-down mechanism.

REFERENCES:
patent: 609438 (1898-08-01), Kershaw
patent: 811440 (1906-01-01), Roberts
patent: 1116434 (1914-11-01), Johansson
patent: 1714452 (1929-05-01), Schat
patent: 2276767 (1942-03-01), Dubuque
patent: 3887038 (1975-06-01), Buschbom et al.

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