| 摘要 |
992,913. Nut runners. ATLAS COPCO A.B. April 13, 1964 [April 24, 1963], No. 15082/64. Heading B3N. A hammer driven nut wrench comprises a ring or open socket 10, and a hammer housing 18, pivoted on the socket at 23, and carrying an anvil 17, actuated by the piston 16, of a pneumatic hammer 15. Pivot 23 is surrounded by a rubber sleeve 25, having peripheral annular grooves, or the pivot may be journalled directly in the lug 27 of the socket, with elastic sleeves provided in the ears 22 of housing 18. |
