Metal deforming – By or with work-constrainer and/or manipulated work-forcer
Patent
1998-09-14
1999-12-14
Tolan, Ed
Metal deforming
By or with work-constrainer and/or manipulated work-forcer
72705, 254 30, B21J 1308
Patent
active
060002727
ABSTRACT:
A vehicle repair rack having a platform for receiving vehicles for straightening is tilted as it is raised from the floor for easier loading of low vehicles, without the vehicle's bottoming out. The repair rack uses a parallel linkage to raise the platform. The platform is one link of the parallel linkage; and, the link that is parallel to the platform is allowed to elongate as the platform is raised, thereby causing the platform to move into non-parallelism with respect to the elongated link, so the platform is tilted. The parallel linkage includes legs as the other two links, and a connecting rod between the two legs is the elongating link. One end of the connecting rod has a slot that allows the connecting rod to move axially to a limited extent for the elongation.
REFERENCES:
patent: 4592225 (1986-06-01), Eck
patent: 4854151 (1989-08-01), Belgarde
patent: 4916933 (1990-04-01), Celette
patent: 5027639 (1991-07-01), Hinson
patent: 5784921 (1998-07-01), Venalainen
Middleton James B.
Rodgers Walter A.
Tolan Ed
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