Importance

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Abstract

Apparatus for reworking pavement expansion joints by resizing the joint includes a frame having front and rear portions hinged to one another at a transverse pivot axis. The frame pushed along the pavement by a vehicle. The rear frame portion is supported by laterally positioned wheels and by a rear guide disk. The front frame portion is supported by a front guide disk. The guide disks lie along the frame axis and engage the expansion joint to guide the frame along the joint. A concrete cutting saw is mounted to the rear frame portion directly above the axis of the support wheels with its saw blade lying in the same vertical plane as the guide disks. The saw is preferably remotely raised and lowerd through actuation of a hydraulic cylinder mounted to the frame to adjust the depth of cut. The frame is pushed through a link drive having dual axis joints for attachment to the vehicle and the frame.

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First Claim