Coupling for fluid pipes
First Claim
1. A coupling for fluid pipes, comprising:
- a plug having an outer peripheral groove;
a socket capable of being fitted with the plug, the socket including a socket body, a sleeve slidably fitted on the outer peripheral surface of the socket body and urged toward the distal end thereof, and a plurality of locking members provided on the socket body and capable of being engaged with and disengaged from the outer peripheral groove by means of the sleeve;
a pair of end faces respectively provided on the plug and the socket and adapted to abut against each other when the plug and the socket are joined;
a pair of valves respectively provided at the plug and the socket, the valves being opened when the plug and the socket are joined, and being closed when the plug and the socket are separated from each other;
a shaped packing including a main body and at least two lips, the main body having a circular cross section, and being provided on one of the coupling end faces, said at least two lips projecting from the main body and being allowed to be brought into contact with the other of the coupling end faces, at least one of said at least two lips being brought into contact with the other of the coupling end faces before the valves are opened, when the plug and the socket are joined thereby preventing admission of external air, and said at least one of said at least two lips being disengaged from the other of the coupling end faces after the valves are closed when the plug and the socket are separated from each other, thereby preventing the fluid from leaking out.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a coupling for fluid pipes, comprising a plug and a socket. The socket includes a socket body, a sleeve slidably fitted on the outer peripheral surface of the socket body and urged toward the distal end thereof, and a plurality of locking members provided on the socket body and capable of being engaged with and disengaged from an outer peripheral groove by means of the sleeve. The pipe coupling further comprises a pair of end faces provided individually on the plug and the socket and adapted to abut against each other when the plug and the socket are joined, and a shaped packing provided on one of the coupling end faces and adapted to prevent admission of external air when the coupling end faces abut against each other and to prevent the fluid from leaking out when the coupling end faces are separated from each other.
45 Citations
15 Claims
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1. A coupling for fluid pipes, comprising:
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a plug having an outer peripheral groove;
a socket capable of being fitted with the plug, the socket including a socket body, a sleeve slidably fitted on the outer peripheral surface of the socket body and urged toward the distal end thereof, and a plurality of locking members provided on the socket body and capable of being engaged with and disengaged from the outer peripheral groove by means of the sleeve;
a pair of end faces respectively provided on the plug and the socket and adapted to abut against each other when the plug and the socket are joined;
a pair of valves respectively provided at the plug and the socket, the valves being opened when the plug and the socket are joined, and being closed when the plug and the socket are separated from each other;
a shaped packing including a main body and at least two lips, the main body having a circular cross section, and being provided on one of the coupling end faces, said at least two lips projecting from the main body and being allowed to be brought into contact with the other of the coupling end faces, at least one of said at least two lips being brought into contact with the other of the coupling end faces before the valves are opened, when the plug and the socket are joined thereby preventing admission of external air, and said at least one of said at least two lips being disengaged from the other of the coupling end faces after the valves are closed when the plug and the socket are separated from each other, thereby preventing the fluid from leaking out. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification