Aerial lift including overload sensing system

Details Aerial lift including overload sensing system Aerial lift including overload sensing system

1988-06-14

1989-08-29

Spar, Robert J.

Material or article handling

Vertically swinging load support

182 2, 212261, 212155, 414700, 414708, 414709, B66C 2300

Patent

active

048612243

ABSTRACT:
An aerial lift having means for sensing a combination of the load placed on the upper end of the upper boom and the relative position of the upper boom with respect to horizontal and for generating a signal or interrupting supply of hydraulic fluid to the upper boom lift cylinder in the event the moment on the upper boom exceeds a selected moment.

REFERENCES:
patent: 3139948 (1964-07-01), Rorden
patent: 3841493 (1974-10-01), Jackson et al.
patent: 3854593 (1974-12-01), Gross
patent: 4081055 (1978-03-01), Johnson
patent: 4178591 (1979-12-01), Geppert
patent: 4185280 (1980-01-01), Wilhelm
patent: 4222491 (1980-09-01), Geppert
patent: 4354608 (1982-10-01), Wudtke
patent: 4762199 (1988-08-01), Holmes

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