Working unit of construction equipment with attachment self leve

Details Working unit of construction equipment with attachment self leve Working unit of construction equipment with attachment self leve

1995-11-30

1997-11-18

Underwood, Donald W.

Material or article handling

Vertically swinging load support

Shovel or fork type

414917, E02F 334

Patent

active

056881010

ABSTRACT:
A working unit of construction equipment with an attachment self leveling function is disclosed. The working unit includes an attachment self leveling linkage. The linkage automatically maintains the desired angle of the attachment relative to the reference or ground surface, thereby maintaining the horizontal position of the attachment without any motion for controlling the bucket cylinder while lifting up the attachment from the initial position to the uppermost position by the arm-up motion during the operations of construction equipment. The attachment self leveling linkage has a simplified construction, thereby being easily produced and installed at a lower cost and lightening the weight of the working unit. The linkage thus improves the operational efficiency of the working unit.

REFERENCES:
patent: 2885103 (1959-05-01), Cunningham, Jr.
patent: 2989199 (1961-06-01), Hough et al.
patent: 3133653 (1964-05-01), Anderson
patent: 4844685 (1989-07-01), Sagaser

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