A pavement crack router includes a plurality of bits rotatably mounted to a frame in a direction. A ratchet gear is rotatable with a wheel mounted to the frame. A movable safety release is operably connected to a ratchet rod pivotable between an engaging position engaged with the ratchet gear preventing rotation of the wheel in a reverse direction and a releasing position disengaged from the ratchet gear allowing free rotation of the wheel. An elastomeric inner tube is mounted around a lower end of each of two handle bars and is slideably received in an outer tube fixed to the frame. Two elastomeric washers are mounted around the lower end of each handle bar and sandwich the inner tube within the outer tube. A switch is operable to lower the frame and bits for opening and cleaning a crack in pavement.
申请公布号
US8491218(B2)
申请公布日期
2013.07.23
申请号
US201213425602
申请日期
2012.03.21
申请人
HALVORSON MICHAEL STUART;JOHNSON STEPHEN R.;CIMLINE, INC.