| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wrench for attaching and detaching a sprinkler head, which allows easy visual confirmation of an engaged state between a sprinkler head, in which a body provided with a nozzle in the inside and connected with water supply piping with a screw is installed inside a ceiling, a bottom surface side of a cup material in a bottomed cylindrical shape covering the outer circumferential part of the body is engaged on the body outside, and a wrench engaging part for connecting the body to the water supply piping is installed near the bottom surface of the cup material, and the wrench for attaching and detaching the sprinkler head to/from the piping. <P>SOLUTION: The wrench R is in a cylindrical shape having a pawl R1 to be engaged with the wrench engaging part (an edge of an opening 6F) at a distal end part, and an engagement confirmation part R2 is installed at the outer circumferential part. <P>COPYRIGHT: (C)2013,JPO&INPIT |
