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专利名称：Edge sharpening or surface abrading
apparatus
发明人：James E. McCambridge申请号：US07/819031申请日：19920110公开号：US05209022A公开日：19930511
摘要：Apparatus for sharpening blade edges or abrading surfaces includes a handleand an abrasive device such as a sharpening stone secured to the handle for reciprocatingmotion with respect to the handle. The stone is secured to a drive arm which extends intothe handle. The drive arm is secured in the handle for reciprocating motion by a pair ofspaced pivot bearings. A motor having an offset shaft end oscillates an L- shaped leverinside the handle. The L-shaped lever pivots about a shaft. A load arm of the leverextends through an opening in the drive arm which is between the spaced pivot bearings.Oscillation of the L-shaped lever causes oscillation of the load arm about the shaft, whichin turn causes reciprocation of the drive arm and sharpening stone. The sharpening stonemoves a selected stroke distance, which is determined by, among other things, thedistance between the shaft and the opening in the drive arm. The drive arm is flexible, sothat when the load on one side of the stone is increased, the stroke is decreased, andwhen the load on the other side of the stone is increased, the stroke is also increased. Asthe stroke increases in this manner, the speed of the stone increase, and as the strokedecreases, the power or torque increases and the speed of the stone decreases.
申请人：WAHL CLIPPER CORPORATION
代理机构：Welsh & Katz, Ltd.
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