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Title: Material ripping vehicle

Abstract: A material ripping vehicle includes first and second traction units, and a frame having an upright pivot axis for steerably connecting the traction units. The second traction unit has a pair of spaced apart ground engaging members and a ripping apparatus is mounted on the frame and positioned between the ground engaging members.


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Inventors: Stedman, Robert N. (Chillicothe, IL, US)

Application Number: 839049
Filing Date: 1977-10-03
Publication_date: 1979-11-20
Assignee: Caterpillar Tractor Co. (Peoria, IL)
Primary Class(es): 172/292 180/9.23, 180/9.46
Other Classes:
US Patent Ref:
1669345May, 1928Owens180/9.
2059261Nov, 1936Marshall180/9.
2494324Jan, 1950Wright172/292.
2686982Aug, 1954Leliter172/784.
3253671May, 1966Fielding180/134.
3266816Aug, 1966Peterson et al.172/699.
3419097Dec, 1968Nodwell et al.180/9.
3431741Mar, 1969Kinnan61/72.
3435908Apr, 1969Sunderlin et al.180/9.
3451494Jun, 1969Kowalik180/9.
3503456Mar, 1970Larson172/484.
3516260Jun, 1970Woo, Jr.61/72.
3541709Nov, 1970Come, Jr. et al.37/118.
3581827Jun, 1971Ratcliff172/699.
3616553Nov, 1971Holland37/110.
3711970Jan, 1973Briar37/98.
3815683Jun, 1974Colli, Jr. et al.172/677.
3859809Jan, 1975Clayhold et al.61/72.
4041623Aug, 1977Miller et al.180/9.
4072203Feb, 1978Pierson280/28.

Other Refs: 107270983811
Mar, 1954FR
Sep, 1964FR

Primary Examiner: Shapiro, Paul E.
Assistant Examiner:
Attorney: Lanchantin, Jr.; Charles E.