Working mechanism for construction machine

Details Working mechanism for construction machine Working mechanism for construction machine

2005-09-14

2008-11-18

Underwood, Donald (Department: 3652)

Material or article handling

Vertically swinging load support

Shovel or fork type

C414S685000, C414S722000

Reexamination Certificate

active

07452177

ABSTRACT:
A parallel support member is constituted by a pair of links that are respectively arranged on the left and right sides of a second boom. These links are connected between a first boom and a third boom. Thus, the second boom is moved to the left or right side by an offset cylinder. In this case, when one of the links pulls the third boom, the third boom, an arm, and a bucket can be moved toward the left or right side of a vehicle body to be parallel to the first boom. At this time, the links accept a force exerted in the pulling direction, but need not receive a force exerted in the compression direction, so that the cross sectional areas, the weights of these links can be reduced.

REFERENCES:
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patent: 5924325 (1999-07-01), Brucher et al.
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patent: 9-60030 (1997-09-01), None
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patent: 11-247238 (1999-09-01), None
patent: 2001-317076 (2001-11-01), None
patent: 2003-96810 (2003-04-01), None

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