Coupling device
First Claim
1. A coupling device for a releasable and sealing connection to an externally threaded tubular connector, said coupling device including a centerpiece connected to one end of a fluid conveying line and providing a fluid passage in an extension of said fluid conveying line, a radially outwardly directed flange located on said centerpiece, at least two gripping elements for gripping said flange, each gripping element including an arcuate internally threaded segment for engaging said connector, said segment being radially pivotal for connecting and releasing said coupling device, an axially displaceable sleeve concentrically located around said centerpiece and moveable over said segment between a forward position in which a threaded engagement is provided between said segment and said connector, and a rearward position in which said segment disengages from said connector by swinging outward, and mutually coacting means located on said segment and on said sleeve for restricting in one direction rotational movement between said segment and said sleeve, said coupling device further comprising rotational points, located on said segment about which said segment rotates by swinging outward, such that when, after a mutually meshing engagement between said segment and connector, said segment attempts to swing outward, an arc movement of at least points proximately situated at the top of said screw-thread in said segment will intersect adjacent thread flanks of said external-screw thread in said connector, thereby preventing said segment from swinging outward without loosening mutually meshing threads by rotating said segment with respect to said connector.
1 Assignment
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Accused Products
Abstract
A coupling device for releasable and sealing connection to a tubular, externally threaded connector part. The device includes internally threaded segments which can swing radially to enable the coupling device to be connected to and released from the connector part. An axially movable sleeve is mounted concentrically around the segments and can be moved over the segments between a forward position in which the sleeve brings the threaded segments into meshing engagement with the threads of the connector part, and a rear position in which the segments are able to swing out so as to release the engagement. The segments and the sleeve also include mutually coacting means which, when in engagement with one another, limit the possibility of relative rotational movement in one direction between the segments and the sleeve.
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Citations
11 Claims
- 1. A coupling device for a releasable and sealing connection to an externally threaded tubular connector, said coupling device including a centerpiece connected to one end of a fluid conveying line and providing a fluid passage in an extension of said fluid conveying line, a radially outwardly directed flange located on said centerpiece, at least two gripping elements for gripping said flange, each gripping element including an arcuate internally threaded segment for engaging said connector, said segment being radially pivotal for connecting and releasing said coupling device, an axially displaceable sleeve concentrically located around said centerpiece and moveable over said segment between a forward position in which a threaded engagement is provided between said segment and said connector, and a rearward position in which said segment disengages from said connector by swinging outward, and mutually coacting means located on said segment and on said sleeve for restricting in one direction rotational movement between said segment and said sleeve, said coupling device further comprising rotational points, located on said segment about which said segment rotates by swinging outward, such that when, after a mutually meshing engagement between said segment and connector, said segment attempts to swing outward, an arc movement of at least points proximately situated at the top of said screw-thread in said segment will intersect adjacent thread flanks of said external-screw thread in said connector, thereby preventing said segment from swinging outward without loosening mutually meshing threads by rotating said segment with respect to said connector.
Specification