Pipe coupling having line pressure actuated threaded segments
First Claim
1. A plug coupling for providing a pressure-sealed connection between a pressure conduit and a pressure medium actuated device provided with a thread connection means, a cylindrical housing, which is connected to said pressure conduit, being sealingly designed at its end face facing the thread connection means, and a fastening member which is adapted to be axially displaced relative to the housing having, at its end facing the thread connection means, clamping jaws which are provided with a thread and which are adapted to be brought into engagement with the thread connection means, and said clamping jaws being adapted to be radially adjusted via an inclined surface arrangement in the case of axial displacement of the fastening member, characterized in that the fastening member (2, 102) is designed as a piston (21, 47) guided in a stepped axial bore (18, 20;
- 118,
120) of the housing (1), that the piston (21,
47) is adapted to have applied thereto pressure in both axial directions by means of the pressure medium via a plurality of pressure paths (7 to
10), that the pressure conduit is adapted to be connected to the pressure medium actuated device via pressure paths (6,
8), that on the outer circumferential surface (41, 42;
141,
142) of the housing (1) an axially displaceable sleeve (4) is provided, which is sealed with respect to said outer circumferential surface (41,
42) at its two axial ends and which leaves open therebetween an annular interspace (48), and that the pressure paths (6, 7, 9,
10) are arranged in such a way that, depending on the position of the sleeve (4), they communicate with the pressure conduit (51) or with the ambient air.
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Accused Products
Abstract
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.
37 Citations
11 Claims
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1. A plug coupling for providing a pressure-sealed connection between a pressure conduit and a pressure medium actuated device provided with a thread connection means, a cylindrical housing, which is connected to said pressure conduit, being sealingly designed at its end face facing the thread connection means, and a fastening member which is adapted to be axially displaced relative to the housing having, at its end facing the thread connection means, clamping jaws which are provided with a thread and which are adapted to be brought into engagement with the thread connection means, and said clamping jaws being adapted to be radially adjusted via an inclined surface arrangement in the case of axial displacement of the fastening member, characterized in that the fastening member (2, 102) is designed as a piston (21, 47) guided in a stepped axial bore (18, 20;
- 118,
120) of the housing (1), that the piston (21,
47) is adapted to have applied thereto pressure in both axial directions by means of the pressure medium via a plurality of pressure paths (7 to
10), that the pressure conduit is adapted to be connected to the pressure medium actuated device via pressure paths (6,
8), that on the outer circumferential surface (41, 42;
141,
142) of the housing (1) an axially displaceable sleeve (4) is provided, which is sealed with respect to said outer circumferential surface (41,
42) at its two axial ends and which leaves open therebetween an annular interspace (48), and that the pressure paths (6, 7, 9,
10) are arranged in such a way that, depending on the position of the sleeve (4), they communicate with the pressure conduit (51) or with the ambient air. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- 118,
Specification