Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1987-02-18
1988-03-01
Werner, Frank E.
Material or article handling
Vertically swinging load support
Shovel or fork type
4146955, E02F 328
Patent
active
047282517
ABSTRACT:
A backhoe vehicle comprising an upper carriage including a driver's section and swivellable 360 degrees on a chassis, and an excavating assembly including a boom, a bucket arm and a bucket. The boom defines a first and a second bent portions so that a distal end of the boom is inclined in a direction in which the boom is lowered. An excavating assembly holder is attached to a front region of the upper carriage and adjacent a transversely mid-position of the vehicle to be pivotable on a vertical axis. The boom is connected to the holder to be pivotable on a horizontal rotary shaft. A boom cylinder for causing pivotal movements of the excavating assembly is connected at one end to the boom and at the other end selectively to a first and a second pivot members defined on the holder. The second pivot member is disposed at a lower rearward position with respect to the first pivot member. The first bent portion is defined substantially at a longitudinally mid-position of the boom, and the second bent portion is defined between the first bent portion and the rotary shaft. A distance between the rotary shaft and the second bent portion is substantially equal to a distance between the rotary shaft and the first pivot member.
REFERENCES:
patent: 4044610 (1977-08-01), Oldaeus et al.
patent: 4571147 (1986-02-01), Schaeff
Takashima Akira
Wada Takafumi
Kubota Ltd.
Underwood Donald W.
Werner Frank E.
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