Load balancing mechanism

Details Load balancing mechanism Load balancing mechanism

1988-06-17

1991-08-06

Spar, Robert J.

Material or article handling

Horizontally swinging load support

Swinging about pivot

414719, 414917, 414718, 254 46, 248324, 901 15, 901 48, B25G 100

Patent

active

050372670

ABSTRACT:
A load balancing mechanism (10) disclosed includes an arm (12) including first and second arm portions (14,26). A support post (22) is rotatable about its vertical axis A and supports arm (12) by first arm portion (14) for pivotal movement in a vertical plane and also for rotational movement about axis A. First arm portion (14) includes parallel spaced members (16,16') defining a parallel linkage arrangement. A piston and cylinder balancing arrangement (38) connects post (22) and first arm portion (14) allowing upward and downward pivotal movement of arm (12) and is responsive to such upward and downward pivotal movement to provide balancing of a load thereon. The second arm portion (26) can be longitudinally moved relative to a second mount (32) to increase or decrease the length of arm (12) without having to change the force applied via balancing arrangement (38) to maintain balancing of the load.

REFERENCES:
patent: 4226567 (1980-10-01), Van Orsdale, Jr.
patent: 4507046 (1985-03-01), Sugimoto et al.
patent: 4801235 (1989-01-01), Rauschdorf

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