| 摘要 |
<p>1,115,945. Pipe couplings. HANSEN MANUFACTURING CO. 31 Aug., 1966 [10 Sept., 1965], No. 38776/66. Heading F2G. A valve sleeve 19 is slidable on a valve body 18 and controls the flow of fluid from an inlet chamber 22 to an outlet chamber 23 being in communication, when the sleeve is in the closed position as shown, with a venting chamber 36, and a sleeve 54 is biased toward the locking position thereof by a spring 56 whereby balls 50 are pressed radially inwardly into a groove 53 formed in a plug 14 when the latter has been inserted in the socket 16; when the plug is removed from the socket a spring 66 moves a ring-like member 65 to a position in which the balls are urged outwardly into a counterbore in the sleeve 54 so that the latter cannot be moved toward the locking position thereof. A gasket 70 which is contacted by the nose of the plug 14 provides a seal between the socket 16 and the body 18. The valve sleeve 19 is prevented by the sleeve 54 from moving to a position whereby the chambers 22, 23 are in communication until the sleeve 54 is in a locking position, and movement of the sleeve 54 to a position in which the plug 14 can be withdrawn from the socket 16 causes the valve sleeve 19 to be moved to a valve closed position; when the passage 36a is moved into communication with the ports 26 of the chamber 23 pressure fluid is directed into the chamber 36 to act against the bottom of the counterbore 58 in the sleeve 54 to urge the sleeve toward a locking position and to act on the bottom surface 40 of the counterbore in the valve sleeve 19 to urge the valve sleeve to a closed position.</p> |
