| 摘要 |
<p>A universal setting tool for disposition within a rotary drive tool comprises a stub shaft potion (114) mounted upon a first end of a collet housing (112) to be mounted within a chuck mechanism of the rotary drive tool, and an axially oriented stepped bore (126) extending into the interior of the collet housing from the opposite end thereof. A coil spring (132) is disposed within the stepped bore, and one end (138) of the coil spring is staked or secured upon the collet housing. The coil spring effectively defines an axially oriented expansible and contractible tubular member into which a free end portion of a rebar or threaded rod anchor member (158) can be inserted. In this manner, when the rotary drive tool, and therefore the collet housing member, are rotated in the clockwise direction, this causes a radial contraction of the tubular spring member. Continued rotation of the collet housing member causes a drive connection with the rebar or threaded rot anchor member. Rotation of the rotary drive tool in the opposite direction release the grip of the spring member upon the anchor.</p> |
