Backhoe

Details Backhoe Backhoe

1986-07-21

1988-01-19

Spar, Robert J.

Material or article handling

Vertically swinging load support

Shovel or fork type

414692, 414694, 172272, E02F 332, E02F 3627

Patent

active

047202343

ABSTRACT:
The boom of a backhoe is hinged to one end of a two-position cradle-like tilt member. The base of a single control cylinder is hinged to the other end and the piston is pivotally secured to the boom to swing it so that boom and control cylinder do not mutually interfere but allow for more stable transport and deeper working range. The cradle is pivotally mounted near its center on a swing tower, adjustable in azimuth. The cradle is caused to move to its end positions by control of the boom and its load. Actuating means for the dipper arm of the backhoe is secured between arm and the boom. Suitable locks are provided for securing the cradle in the transport and working positions.

REFERENCES:
patent: 3282452 (1966-11-01), Parsen
patent: 3376984 (1968-04-01), Long et al.
patent: 3987914 (1976-10-01), Van Der Zyl et al.
patent: 4074821 (1978-02-01), Long
patent: 4278394 (1981-07-01), Johnson
patent: 4358240 (1982-11-01), Shumaker

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