Material or article handling – Vertically swinging load support – Shovel or fork type
Reexamination Certificate
2006-05-16
2006-05-16
Underwood, Donald W. (Department: 3652)
Material or article handling
Vertically swinging load support
Shovel or fork type
C060S563000, C091S508000
Reexamination Certificate
active
07044705
ABSTRACT:
A load handling machine includes a body, a lifting arm pivotally mounted to the body about a first pivot axis, and a load handling implement pivotally mounted to the lifting arm about a second pivot axis. A first actuator provides movement about the first axis, and a second actuator provides movement about the second axis. A displacement device is mounted on the body and the lifting and includes a pair of cylinders. The second actuator and the displacement device are interconnected such that as the lifting arm is lowered, fluid ejected from one of the pair of cylinders of the displacement device is fed to an annulus side of the second actuator, and as the lifting arm is raised, fluid is ejected from annulus sides of both of the cylinders of the displacement device and is fed to a non-annulus side of the second actuator.
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Search Report on the European Patent Office in application No. EP 04 01 4729, dated Sep. 13, 2005.
J.C. Bamford Excavators Limited
Marshall & Gerstein & Borun LLP
Underwood Donald W.
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