Patent ID: 6073910
Filing Date: 2000-06-13
Classification: F16L

Abstract:
A coupling for connecting a first pipe part and a second pipe part, comprising a first coupling part which is to be connected to the first pipe part and a second coupling part which is to be connected to the second pipe part, which two coupling parts each have a through passage and can be coupled together in order to bring about a releasable connection between the coupling parts, such that the through passages in the coupling parts adjoin one another coaxially, and further comprising:shut-off means, which is arranged in at least one of the two coupling parts, for opening and shutting off the through passage in the coupling part in question,locking means comprising a first locking member, which is arranged in the first coupling part, and a second locking member, which is arranged in the second coupling part, which locking members are able to interact with one another in order to lock the two coupled-together coupling parts in the axial direction with respect to one another, and are able to move with respect to one another between an unlocking position, in which the two coupling parts can be separated from one another, and a fully locking position, in which the two coupling parts are coupled together and are fully locked together in the axial direction, via an intermediate position, in which the two coupling parts are coupled together and the locking members are in a locking position close to the unlocking position,actuating means, which are arranged in at least one of the two coupling parts, for actuating the shut-off means, the locking means and the actuating means being provided with cooperating parts such that the through passage in that coupling part in which the shut-off means is arranged can only be opened by means of the actuating means and the shut-off means when the locking means is in the intermediate position or the fully locking position or between these positions, and the locking members can only be moved out of the intermediate position into the unlocking position when the actuating means and the shut-off means are in the position in which the through passage in the coupling part in which the shut-off means is arranged is shut off, andwherein the actuating means and the locking means can be actuated separately.