| 摘要 |
<p>IMPROVED ROTARY IMPACT TOOL of the Disclosure A rotary impact tool having a fluid operated motor with a hammer slidably mounted with respect to the rotor and rotatable therewith, an anvil normally spaced axially from the hammer, force transmitting means for transmitting rotation of the rotor to the anvil and for moving the hammer toward and away from the anvil for rotary impact therewith without imposing axial forces on the rotor, except for inconsequential frictional forces between splines. .1a.</p> |
