| 摘要 |
A lock shell comprising a tubular outer shell for receiving lock components, illustratively a spindle, the shell having an annular key way at the front face; the shell has an enlarged head portion at the front and a reduced diameter cylindrical portion extending from the head portion to the rear of the shell; at least one longitudinally extending lug member is disposed on the outer periphery of the cylindrical portion; the at least one lug starts at the enlarged head and extends rearwardly a minor portion of the length of the shell; the lug has portions successively from the enlarged head consisting of straight top and side walls, inwardly tapering top and side walls, and diminishingly angled walls.
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