| 摘要 |
A compact, streamlined crank assembly for use on the splined shaft of a casement window operating mechanism includes a tubular body with an ovoid socket in the bottom thereof for mounting the body on any one of the shafts of various window operating mechanisms. A handle pivotally mounted on one corne r of the body is stored in a trough on the top end of the body, or the handle includes a trough complementary to the square cross section top end of the body.</SDOAB >
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