Abstract: A router machine for cutting a groove in pavement and the like for repairing cracks includes a pair of frame members mounting a shroud therebetween. A cutter head drive shaft is mounted by the frame members with axially spaced bushings keyed thereto within the shroud. Disks are bolted to the bushings. Circumferentially spaced cutter members are mounted to the disks, and include pins axially removably extended through apertures. Star bits and spacers are mounted on the pins. Retainers are pivotally mounted to the disks to selectively permit axial removable of the pins from the disks. A U-shaped mounting axle is pivoted to the frame members forwardly of the shroud for mounting ground engaging wheels. An operator guide handle is pivotally mounted to a console and operatively connected to brake members mounted by a brake axle to brakingly engage the ground engaging wheels when the handle cross bar is pushed downwardly.

Abstract: Device and method for treating mammalian bone deficiencies, defects, voids and conformational discontinuities produced by congenital deformities, osseous and/or soft tissue pathology, traumatic injuries and functional atrophy is described. The device is a one piece molded body member composed of four substances, each of which contributes to the device, a specific requirement (or requirements) for osteogenesis and/or osteoneogenesis. Taken as a whole, the functions of these device constituents are integrated into a single body member which, when implanted into a bone defect, has the capacity to restore functional architecture and mechanical integrity, initiate osteoinduction and osteogenesis, and maintain the biological processes of bone formation and remodeling while the host organism is simultaneously biodegrading the body member.