|
|

|
|
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.
Do you think this is a good invention? Vote now:
Votes so far: For:(0) Against:(0) Other info:
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:
| 1669345 | May, 1928 | Owens | 180/9. | | 2059261 | Nov, 1936 | Marshall | 180/9. | | 2494324 | Jan, 1950 | Wright | 172/292. | | 2686982 | Aug, 1954 | Leliter | 172/784. | | 3253671 | May, 1966 | Fielding | 180/134. | | 3266816 | Aug, 1966 | Peterson et al. | 172/699. | | 3419097 | Dec, 1968 | Nodwell et al. | 180/9. | | 3431741 | Mar, 1969 | Kinnan | 61/72. | | 3435908 | Apr, 1969 | Sunderlin et al. | 180/9. | | 3451494 | Jun, 1969 | Kowalik | 180/9. | | 3503456 | Mar, 1970 | Larson | 172/484. | | 3516260 | Jun, 1970 | Woo, Jr. | 61/72. | | 3541709 | Nov, 1970 | Come, Jr. et al. | 37/118. | | 3581827 | Jun, 1971 | Ratcliff | 172/699. | | 3616553 | Nov, 1971 | Holland | 37/110. | | 3711970 | Jan, 1973 | Briar | 37/98. | | 3815683 | Jun, 1974 | Colli, Jr. et al. | 172/677. | | 3859809 | Jan, 1975 | Clayhold et al. | 61/72. | | 4041623 | Aug, 1977 | Miller et al. | 180/9. | | 4072203 | Feb, 1978 | Pierson | 280/28. |
Other Refs:
1072709| Mar, 1954 | FR | | 83811Sep, 1964 | FR | | | | | | | |
Primary Examiner:
Shapiro, Paul E.
Assistant Examiner:
Attorney:
Lanchantin, Jr.; Charles E.
|
|

|