| 摘要 |
894,757. Rod couplings. WILLIAMS, C. I. Sept. 13, 1960 [May 2, 1960], No. 31470/60. Class 99(1). A rod coupling comprises overlapping rods 10, 11, Fig. 1, having interengaged threaded end portions 12, 13 which are held secured by a sleeve 14 having on opening adapted to receive in a close fit the interengaged end portions. The sleeve 14 may have an elliptical crosssection as in Fig. 2 or, in a modification, may have straight sides. |
