Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1976-05-24
1978-03-14
Oresky, Lawrence J.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187 90, 188188, 188189, B66B 516
Patent
active
040786340
ABSTRACT:
In the preferred embodiment of the invention disclosed herein a lift apparatus includes a load carriage movable along a mast member by a hoist means including a cable supporting the load carriage and connected to a drive means. Also included is a safety brake including brake means operative to apply a braking force between the load carriage and the mast member and for supporting the load carriage on the mast member when the brake means is in its operative condition. In accordance with the invention, the brake means is controlled through an operating member which is actuated by either a first or second actuating means, each of which is independent of the other. The first actuating means is arranged to operate the brake means if the cable supporting the load carriage fails and the second actuating means is arranged to operate the brake means in response to an over-speed condition created by other failures in the hoist means.
REFERENCES:
patent: 805300 (1905-11-01), Keeley
patent: 1173722 (1916-02-01), Kurz
patent: 2490653 (1949-12-01), Sahlin
patent: 2944635 (1960-07-01), Wittkuhns
patent: 3232382 (1966-02-01), Buck
Nerenberg Aaron
Ney Andrew L.
Oresky Lawrence J.
Standard Pressed Steel Co.
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