Abstract: A system for removing covers from shipping cassettes that are used to ship computer disk media unlatches the covers and separates them from the cassette in a single fixture position. A movable fork unlatches a top cover from a bottom cover while the cassette is rotated off of the bottom cover. This action unlatches and separates the two covers allowing the removal of the bottom cover from the cassette in one motion. The top cover is then easily lifted off of the bottom cover.

Abstract: An apparatus and method for simultaneously cutting parallel slots in a pavement surface is provided, especially for dowel bar retrofit load transfer restoration at joints. The apparatus includes a movable frame lockable with a brake, plurality of parallel cutting blades rotatably mounted on twin cutting heads on the frame, vertical travel unit for raising and lowering the blades independently or in unison, and horizontal travel units for moving the blades horizontally. One of the twin cutting heads is mounted on each side of the frame, with hydraulic adjusting rams for independently setting the width therebetween. A slurry control system which is mounted on the frame provides the blades with coolant and vacuums up the slurry produced during cutting.

Abstract: A saw blade for producing a trapezoidal shaped groove in a surface including a circular support disc and a plurality of spaced-apart abrasive elements supported about the periphery of the support disc wherein the abrasive elements include a first set of a generally rectangular cross sectional configuration and a second set of a generally trapezoidal cross sectional configuration wherein the use of the two sets of abrasive elements extends the wear life of the saw blade.