The specification discloses a roller insert which can be welded into a crossframe of a log trailer to provide low friction to a pivoted log bunk. Each insert includes a frame welded into a cutout portion in an end portion of the crossframe. Rollers are mounted on axles removably secured in the frame by keeper bars.
申请公布号
US4268051(A)
申请公布日期
1981.05.19
申请号
US19780871152
申请日期
1978.01.20
申请人
ENOCH SKIRVIN & SONS, INC.
发明人
SKIRVIN, PAUL G.;SKIRVIN, WALTER W.;SKIRVIN, CARL L.