Elevating device for a work vehicle

Details Elevating device for a work vehicle Elevating device for a work vehicle

1986-12-19

1988-05-03

Rolla, Joseph J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

269 75, 187 869, B66B 920

Patent

active

047414120

ABSTRACT:
Devices for elevationally moving a platform are complex in construction, bulky, tend to wear prematurely, are unable to maintain the platform at a preselected attitude, and tend to move jerky. A lifting mechanism having an elevationally movable shaft driven by a motor is provided for elevationally moving a platform. A bearing member supports the platform for universal pivotal movement on the shaft, and first and second guide assemblies maintain the platform at a preselected attitude relative to the vehicle frame, guide the platform for substantially straight elevational movement, and prevent undesirable forces from being applied to the shaft. Thus, the problems related to premature wear and failure, jerky operation, platform attitude maintenance, size and complexity are reduced. The elevating device is particularly suited for use on an automatic guided vehicle.

REFERENCES:
patent: 659532 (1900-10-01), Jordan
patent: 1795072 (1931-03-01), Bosick
patent: 2135765 (1938-11-01), Paine
patent: 2471955 (1949-05-01), Hatch
patent: 4102463 (1978-07-01), Schmidt
patent: 4374497 (1983-02-01), Harmand
patent: 4466509 (1984-08-01), Kishi

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