Title: Steering apparatus for road rollers

Abstract: Steering apparatus for road rollers of the self-propelled type having two drums each of which is journalled to rotate in a frame pivotally mounted on a common chassis. A piston rod, pivotally connected at its ends to the drum frames, is slidably mounted in a steering cylinder pivotally mounted on the chassis. A control system for transmitting and receiving a pressure medium through a pair of lines connected to the steering cylinder responds to a steering device to cause movement of the piston in the cylinder, so that the piston rod causes simultaneous rotation of the drum frames and proper tracking of the road roller drums.

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Inventors: Sturesson, Rune (Lyckeby, SW)

Application Number: 639282
Filing Date: 1975-12-10
Publication_date: 1977-07-05
Assignee: Dynapac Maskin AB (Solna, SW)
Primary Class(es): 180/424 180/20
Other Classes:
US Patent Ref:

2598863	Jun, 1952	Tucker	180/79.
2839147	Jun, 1958	Fletcher	180/20.
3669202	Jun, 1972	Andersen	180/140.
3782491	Jan, 1974	Herbenar	180/155.
3868194	Feb, 1975	Ferguson	180/20.
3872942	Mar, 1975	Metailler	180/20.

Other Refs: 404,8341,070,7891,070,455

Jan, 1934	UK
Jun, 1967	UK
Jun, 1967	UK

Primary Examiner: Song, Robert R.
Assistant Examiner: Schrecengost, R.
Attorney: Brumbaugh, Graves, Donohue & Raymond