Material or article handling – Vertically swinging load support – Shovel or fork type
Reexamination Certificate
2005-03-15
2005-03-15
Underwood, Donald W. (Department: 3652)
Material or article handling
Vertically swinging load support
Shovel or fork type
C414S680000
Reexamination Certificate
active
06866466
ABSTRACT:
A lift arm assembly for a skid steer loader comprises a pair of lift arm links that are pivotally mounted together at first ends of the links. A first lift arm link is of substantial length and is pivotally mounted to the frame of the skid steer loader adjacent the rear lower portion of the frame and extends upwardly. A second lift arm link extends forwardly from the first lift arm link pivot to a position ahead of the skid steer loader frame. A control link is provided that has one end pivotally mounted to the loader frame adjacent a forward end of the loader frame, and a second end pivotally mounted to the second lift arm link to guide the second lift arm link as it is raised. An extendable and retractable actuator is pivotally mounted at a first end to the first lift arm link adjacent to the pivot of the first lift arm link to the frame. A second end of the actuator is pivotally mounted to the second lift arm link forwardly of the first lift arm length link. The control link is of length, and its pivots are located such that the outer end of the first lift arm link moves in a substantially vertical path as the actuator is extended and retracted.
REFERENCES:
patent: 1371344 (1921-03-01), Brackett
patent: 2455474 (1948-12-01), Drott et al.
patent: 2729349 (1956-01-01), Stueland
patent: 2791341 (1957-05-01), Michaels et al.
patent: 3215292 (1965-11-01), Halls
patent: 3463335 (1969-08-01), Brownell et al.
patent: 3491906 (1970-01-01), Davidson
patent: 3780895 (1973-12-01), Campbell
patent: 3792786 (1974-02-01), Goikhburg et al.
patent: 3802589 (1974-04-01), Holtkamp
patent: 3910440 (1975-10-01), Holtkamp et al.
patent: 4054216 (1977-10-01), Inui et al.
patent: 4388038 (1983-06-01), Freitag
patent: 4465425 (1984-08-01), Schwappach
patent: 5169278 (1992-12-01), Hoechst et al.
patent: 5184932 (1993-02-01), Misuda et al.
patent: 5511932 (1996-04-01), Todd et al.
patent: 5542814 (1996-08-01), Ashcroft et al.
patent: 5609464 (1997-03-01), Moffitt et al.
patent: 6474933 (2002-11-01), Hoechst et al.
patent: 6616398 (2003-09-01), Dershem et al.
patent: 25 04 185 (1975-08-01), None
patent: 0 628 664 (1994-12-01), None
“345 Mustang Loader”, Owatonna Manufacturing Company, Inc. brochure, four pages, publication date 1982.
“445 Mustang Loader”, Owatonna Manufacturing Company, Inc. brochure, four pages, publication date Jan. 1980.
“545 Mustang Loader”, Owatonna Manufacturing Company, Inc. brochure, four pages, publication date 1980.
Albright Larry E.
Roan Thomas J.
Clark Equipment Company
Underwood Donald W.
Westman Champlin & Kelly P.A.
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