| 摘要 |
<p>PCT No. PCT/DE83/00217 Sec. 371 Date Aug. 20, 1984 Sec. 102(e) Date Aug. 20, 1984 PCT Filed Dec. 23, 1983 PCT Pub. No. WO84/02566 PCT Pub. Date Jul. 5, 1984.The coupling is provided with a cylinder (15, 49) within which a piston can be moved under pressure in one direction or the other. The piston has attached to it a clamping device in the form of jaws (32) which are adapted to be pressed together radially inwards and which are adapted to be fixed in a spread-apart position. The outer circumferential surface (41, 42) of the cylinder has provided on it a sleeve (4) which is adapted to be displaced and which is capable of occupying several positions, the jaws being pressed together in one of said positions and the jaws being spread apart in another position, and in a third position pressurized air can be applied to a connection.</p> |
