Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1995-08-01
1997-10-21
Merritt, Karen B.
Material or article handling
Vertically swinging load support
Shovel or fork type
414710, 414917, E02F 342
Patent
active
056789793
ABSTRACT:
A tilt linkage mechanism for controlling the pitch of an implement used with load elevating vehicles which includes an actuation cylinder which is mounted intermediate to the length of the implement lift arms and which is utilized to control the rotation of at least one pivot shaft connected to the vehicle lift arms so as to be in parallel relationship between a first pivot axis where the lift arms are connected to the vehicle and a second pivot axis where the lift arms are pivotally connected relative to the implement. At least one parallel linkage assembly is connected to the at least one pivot shaft and to pivot points spaced on either side of the second pivot axis and stabilizer elements are provided for allowing rotation of the actuation cylinder during use for adjusting the pitch of the implement.
REFERENCES:
patent: 2628730 (1953-02-01), Speicher et al.
patent: 2712389 (1955-07-01), Sewell et al.
patent: 2773613 (1956-12-01), Burrus
patent: 3888371 (1975-06-01), Moreau
patent: 4699560 (1987-10-01), Ostermayer et al.
patent: 5192179 (1993-03-01), Kovacs
patent: 5533856 (1996-07-01), Friesen et al.
Merritt Karen B.
Morse Gregory A.
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