| 摘要 |
<p>PURPOSE: To ensure sealing and simplify operation by inserting a shank having a transversal hole into the through holes of the eyelet-type movable hollow joint having an internal chamber and a cannular duct via flexible round sealing gaskets. CONSTITUTION: An eyelet-type joint 1 has parallel coaxial through holes 2 and 2' in the opposite upper surface 6 and lower surface 7 respectively. The shank 3 of a screw is inserted into these through holes 2, 2'. A first round groove 10 is formed in the vicinity of the lower side 8 of a head 4 of the shank 3 of the screw, and a second round groove 11 substantially corresponding to the lower parallel surface is formed in the vicinity of the threaded region 5 parallel with the first round groove 10. Round gaskets 9 and 9' are arranged in the grooves 10 and 11 respectively.</p> |
