Coupling assembly
First Claim
1. A coupler for connecting a fluid line under pressure comprising a body and valve, sliding sleeve means positioned relative to said valve, said sliding sleeve means selectively blocking fluid flow through the coupler, spring means biasing the sliding sleeve means to block fluid flow, sliding cover means positioned relative to said sliding sleeve means, second spring means biasing said sliding cover means to a position which is flush with a forward face of the coupler, said sliding cover means selectively activating the sliding seal means, and locking means positioned relative to said sliding cover means;
- said valve and body, sliding sleeve means, and sliding cover means presenting a relatively smooth, complete surface when fluid flow is blocked by said sliding sleeve means.
1 Assignment
0 Petitions
Accused Products
Abstract
A coupling assembly for fluid-flow systems is disclosed which includes both a coupler and a nipple. The mating or sealing surfaces of the coupler and nipple are protected from dirt and other deleterious substances by corresponding moveable covers. The moveable covers not only protect the mating surfaces but present flush faces for the coupler and nipple which are easily cleaned. The construction of the coupling assembly is designed so that connection of the coupler and nipple may be accomplished by using only one hand. The coupler is designed so as to render the adapter and the valve a one-piece structure.
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Citations
15 Claims
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1. A coupler for connecting a fluid line under pressure comprising a body and valve, sliding sleeve means positioned relative to said valve, said sliding sleeve means selectively blocking fluid flow through the coupler, spring means biasing the sliding sleeve means to block fluid flow, sliding cover means positioned relative to said sliding sleeve means, second spring means biasing said sliding cover means to a position which is flush with a forward face of the coupler, said sliding cover means selectively activating the sliding seal means, and locking means positioned relative to said sliding cover means;
- said valve and body, sliding sleeve means, and sliding cover means presenting a relatively smooth, complete surface when fluid flow is blocked by said sliding sleeve means.
- View Dependent Claims (2, 3, 4)
- 5. A coupler for connecting a fluid line comprising an annular body having first and second end portions, an annular flow member in said body and having first and second end portions, said first end portion of said annular flow member being connected to said first end portion of said body and extending axially with respect to said body and having a closed second end portion, said annular flow member having an axially extending internal flow passage and defining an annular chamber with said body, a fluid port extending radially through the wall of said annular flow member at said second end portion thereof, sliding sleeve means in said annular chamber and residing on and surrounding said second end portion of said annular flow member and being movable relative thereto between first and second positions, said sliding sleeve means in said first position blocking fluid flow through said port and in said second position permitting fluid flow through said port, spring means biasing said sliding sleeve means to said first position, sliding cover means in said annular chamber and residing on and surrounding said sliding sleeve means and being movable between first and second positions, second spring means biasing said sliding cover means to said first position thereof, movement of said sliding cover means to said second position against the biasing of said second spring means causing said sliding cover means to engage said sliding sleeve means to move said sliding sleeve means to its said second position thereby permitting fluid flow through said port, and locking means carried by said coupler to secure the same to a nipple member upon insertion of a nipple member into said coupler
- 11. A coupler for connecting a fluid line comprising an annular body, an annular flow member in said body, said annular flow member having a flow passage, a fluid port extending through said annular flow member, sliding sleeve means movable relative to said fluid port and between first and second positions, said sliding sleeve means in said first position blocking fluid flow through said port and in said second position permitting fluid flow through said port, first means biasing said sliding sleeve means to said first position, sliding cover means movable relative to said sliding sleeve means and between first and second positions, second means biasing said sliding cover means to said first position thereof, movement of said sliding cover means to said second position against the biasing of said second means and movement of said sliding sleeve means to its said second position against the biasing of said first means permitting fluid flow through said port, and locking means carried by said coupler to secure the same to a nipple member upon insertion of a nipple member into said coupler.
Specification