Material or article handling – Vertically swinging load support – Shovel or fork type
Reexamination Certificate
2007-10-31
2010-06-15
Underwood, Donald (Department: 3652)
Material or article handling
Vertically swinging load support
Shovel or fork type
C384S901000, C403S288000
Reexamination Certificate
active
07736117
ABSTRACT:
A linkage assembly that includes a pivot pin cartridge disposed to connect pivotably a lift arm and a lever of the linkage assembly along an axis including the cartridge. The pivot pin cartridge includes a pin, at least one bushing pivotably disposed about at least a portion of the pin, and a pair of sleeve bearing inserts free-floatingly positioned about the pin and within at least a portion of the bushing. The rear tilt lever is coupled to the bushing for rotation about the pin, while at least one of a pair of side plates of the lift arm is coupled to the pivot pin.
REFERENCES:
patent: 2828984 (1958-04-01), Chow
patent: 3342362 (1967-09-01), Sergio Stefanutti
patent: 3711121 (1973-01-01), Molby
patent: 4096957 (1978-06-01), Iverson et al.
patent: 4135584 (1979-01-01), Smith et al.
patent: 4251182 (1981-02-01), Schroeder
patent: 4772150 (1988-09-01), Horton
patent: 4809805 (1989-03-01), Short
patent: 4961667 (1990-10-01), Reinsma et al.
patent: 5044812 (1991-09-01), Ardelt et al.
patent: 5156520 (1992-10-01), Ericson et al.
patent: 5183318 (1993-02-01), Taft et al.
patent: 5184932 (1993-02-01), Misuda et al.
patent: 5188502 (1993-02-01), Tonsor et al.
patent: 5257858 (1993-11-01), Taft
patent: 5535533 (1996-07-01), Romanchok
patent: 5595471 (1997-01-01), Ajilore
patent: 5599158 (1997-02-01), Ajilore
patent: 6109706 (2000-08-01), Oertley
patent: 6116847 (2000-09-01), Ginn et al.
patent: 6382742 (2002-05-01), Hasselbusch et al.
patent: 6409459 (2002-06-01), Ginn et al.
patent: 6485116 (2002-11-01), Oertley
patent: 6846051 (2005-01-01), Bottom et al.
patent: 7309186 (2007-12-01), Oertley
patent: 2004/0228676 (2004-11-01), Oertley
patent: 2006/0181149 (2006-08-01), Oertley
patent: 1523548 (1968-05-01), None
patent: 02229327 (1990-09-01), None
Hagedorn Jason J.
Hagen Paul D.
Harshberger Wayne
Schambach Darren M.
Caterpillar Inc.
Leydig Voit & Mayer Ltd
Underwood Donald
LandOfFree
Linkage assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Linkage assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linkage assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4249825