Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1992-10-08
1994-06-28
Underwood, Donald W.
Material or article handling
Vertically swinging load support
Shovel or fork type
37468, 403321, E02F 332
Patent
active
053241622
ABSTRACT:
A construction machine having a mobile chassis, a boom mounted on the mobile chassis and capable of swinging vertically, and an arm pivotally connected to the boom. An accessory detachable mechanism connects to a tip end of the arm. An accessory is releasably held by the detachable mechanism. The mechanism includes a pivotal four-bar linkage defined in part by the arm. First and second attaching arrangements are associated with the mechanism and releasably engage respective first and second attachment parts provided on the accessory. The first attachment arrangement includes hooks which engage the first attaching part as defined by a connecting pin on the accessory. A pressure cylinder is associated with the mechanism to effect relative engaging or releasing motion between the first and second attaching arrangements.
REFERENCES:
patent: 3964622 (1976-06-01), Blair et al.
patent: 4643631 (1987-02-01), Maurer et al.
patent: 4663866 (1987-05-01), Karlsson et al.
patent: 4813163 (1989-03-01), Livingston et al.
patent: 4881867 (1989-11-01), Essex et al.
patent: 4944628 (1990-07-01), Hulden
patent: 5024010 (1991-06-01), Hulden
patent: 5110254 (1992-05-01), Aubrey
Japanic Corporation
Underwood Donald W.
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