Title: Mechanically, laterally adjustable treads for crawler vehicles

Abstract: A crawler type vehicle has unique means for connecting roller frames with associated track to the car body for mechanical movement of the roller frames and associated track outwardly from the vehicle for selectively providing a wider work base for the vehicle. The connecting means of a construction sufficient for assuring desired connections of the roller frames to the car body at first and second positions of the roller frames and associated track.

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Inventors: Ponikelsky, Zdenek (Plancenoit, BE)
Collignon, Gerard M. G. J. (Fleurus, BE)

Application Number: 633351
Filing Date: 1975-11-19
Publication_date: 1976-12-21
Assignee: Caterpillar Tractor Co. (Peoria, IL)
Primary Class(es): 180/9.48 280/638
Other Classes:
US Patent Ref:

2763330	Sep, 1956	Potter	180/9.
3041082	Jun, 1962	Burkdoll et al.	280/656.
3193060	Jul, 1965	Park	52/633.
3899038	Aug, 1975	Griffith et al.	180/9.

Other Refs:
Primary Examiner: Peters, Joseph F.
Assistant Examiner: Pekar, John A.
Attorney: Hart; Frank L.