Valve construction for quick-closure coupling
First Claim
1. A socket valve, for use with a cooperating plug valve of a quick-closure coupling for fluid lines, comprising:
- a fixed housing;
a sliding sleeve axially movable in said housing and having an end recess for insertion of a plug valve portion;
a closure member on said sliding sleeve and biased to a closure position;
an annular chamber defined between said sliding sleeve and said housing and having one end proximal to and another end remote from said recess;
at least one axially movable annular piston bounding said chamber at least at said other end thereof;
locking means in the region of said recess for locking the plug valve in the latter, said sleeve being movable axially out of a securing position in which said locking means lock said plug valve, into release positions in which the locking means release the plug valve;
means for admitting pressure fluid into said chamber to urge said piston to bear in said securing position of said sleeve against shoulders of said sleeve and said housing, respectively, said shoulders being annular shoulders; and
biasing means urging said sleeve to said securing position, ends of said chamber being closed off with said annular piston, said piston being subjected to said fluid and effect of said biasing means, said piston being positioned for preventing parts of said coupling from separating when subjected to the force of said pressure fluid, said chamber closed off with said piston subjecting said sliding sleeve and said housing to fluid pressure for maintaining said sliding sleeve in sealing position.
2 Assignments
0 Petitions
Accused Products
Abstract
A socket valve of a quick-coupling for fluid lines under pressure has a sliding sleeve into an end recess of which a portion of a plug valve of the coupling is insertable, to be held by locking means. The sleeve is movable between a securing position in which it holds the locking means in locking position, and two axially displaced release positions in which it permits the locking means to release the plug valve. The sleeve is spring-biased to the securing position. As an additional safety factor, the sleeve is surrounded by an annular chamber at least one open end of which receives an annular piston. The chamber is communicated with the pressure fluid in the valve so that, when the sleeve is in the securing position, the fluid pressure biases the piston to a position in which it prevents accidental uncoupling of the plug valve, even in the event the biasing spring for the sleeve should break.
19 Citations
12 Claims
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1. A socket valve, for use with a cooperating plug valve of a quick-closure coupling for fluid lines, comprising:
- a fixed housing;
a sliding sleeve axially movable in said housing and having an end recess for insertion of a plug valve portion;
a closure member on said sliding sleeve and biased to a closure position;
an annular chamber defined between said sliding sleeve and said housing and having one end proximal to and another end remote from said recess;
at least one axially movable annular piston bounding said chamber at least at said other end thereof;
locking means in the region of said recess for locking the plug valve in the latter, said sleeve being movable axially out of a securing position in which said locking means lock said plug valve, into release positions in which the locking means release the plug valve;
means for admitting pressure fluid into said chamber to urge said piston to bear in said securing position of said sleeve against shoulders of said sleeve and said housing, respectively, said shoulders being annular shoulders; and
biasing means urging said sleeve to said securing position, ends of said chamber being closed off with said annular piston, said piston being subjected to said fluid and effect of said biasing means, said piston being positioned for preventing parts of said coupling from separating when subjected to the force of said pressure fluid, said chamber closed off with said piston subjecting said sliding sleeve and said housing to fluid pressure for maintaining said sliding sleeve in sealing position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a fixed housing;
Specification