Material or article handling – Vertically swinging load support – Shovel or fork type
Reexamination Certificate
2005-12-15
2008-09-09
Underwood, Donald (Department: 3652)
Material or article handling
Vertically swinging load support
Shovel or fork type
C187S238000, C414S629000
Reexamination Certificate
active
07422410
ABSTRACT:
A lift attachment for a tractor provided with a three-point hitch. A slide assembly is provided for slidable movement in the vertical direction within channel guides. A double acting hydraulic cylinder is connected to the slide assembly for moving the slide assembly either upwardly or downwardly. Lifting tines are connected to the slide assembly. A cam mechanism is provided on the lifting tines to tilt the outer ends of the tines upwardly when the tines are raised and allows the tines to tilt downwardly to a level position when the lifting tines are lowered.
REFERENCES:
patent: 3957167 (1976-05-01), Jacobson et al.
patent: 4268210 (1981-05-01), Ferguson et al.
patent: 4345871 (1982-08-01), Kalif
patent: 4537549 (1985-08-01), Knels
patent: 4597703 (1986-07-01), Bartolini
patent: 4640662 (1987-02-01), Spellman, Jr.
patent: 4940096 (1990-07-01), Johnson
patent: 5178505 (1993-01-01), Smith
patent: 5290133 (1994-03-01), Riley
patent: 5556245 (1996-09-01), Moss
patent: 6065926 (2000-05-01), Knapp
patent: 6068086 (2000-05-01), Bushong et al.
Wagner Benjamin J.
Wagner Robert J.
Conover Richard C.
Underwood Donald
LandOfFree
Lift attachment for use with a three-point hitch of a tractor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lift attachment for use with a three-point hitch of a tractor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lift attachment for use with a three-point hitch of a tractor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3986078