Tubing joint
First Claim
1. In a tubing joint assembly capable of releasably coupling with a flexible tubing inserted in a tube-receiving end thereof, said assembly comprising a tubing joint containing, a release ring, a guide ring with a groove therein, a grip ring, and an elastic sleeve having a recess, the improvement wherein:
- (a) the grip ring is formed of a plurality of inner and outer radial notches cut alternately from its inner and outer circumferences with the outer portion thereof being uniformly bent in a tube-admitting direction to form an obtuse angle in cross-section;
(i) the bent outer portion thereof is inserted in the guide ring groove with the outer notches pointed away from the tube-receiving portion;
(ii) the inner notches are pointed away from the tube-receiving portion to grip the surface of the tubing such that longitudinal movement of the release ring towards the inner notches will disengage the inner notches from the tubing and move them into the recess in the elastic sleeve;
(b) the release ring has a substantially uniform inner diameter which approximates the outer diameter of the flexible tubing to be coupled, and outer diameter portions which comprise, in sequence;
(i) a relatively large outer diameter portion extending beyond the tubing joint to provide a gripping means for axially sliding said release ring;
(ii) a relatively small outer diameter portion extending inwardly from said relatively large outer diameter portion into said tubing joint for receiving a portion of a guide ring; and
(iii) an intermediate outer diameter portion which tapers to a wedge at the inner end of said release ring for axially pressing against a grip ring to release it from engagement with a flexible tubing and move it against an elastic sleeve.
2 Assignments
0 Petitions
Accused Products
Abstract
A tubing joint comprises a grip-ring whose grip-nails bite the outer wall of a tubing inserted into the joint proper to prevent the inserted tubing from moving in the tubing-detaching direction, and a release-ring which releases the bite of the grip-nails on the outer wall of the inserted tubing. The grip-ring is formed in a zigzag ring having a number of notches cut radially and alternately from the inner and outer circumferences of the ring. The outer extremity side of the grip-ring is bent by a constant width in the tubing-admitting direction and the bent ends, i.e., outer extremities, are inserted into a catching section to hold the grip-ring within the joint proper. The inner extremities of the grip-ring formed by the notches serve as grip-nails.
116 Citations
4 Claims
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1. In a tubing joint assembly capable of releasably coupling with a flexible tubing inserted in a tube-receiving end thereof, said assembly comprising a tubing joint containing, a release ring, a guide ring with a groove therein, a grip ring, and an elastic sleeve having a recess, the improvement wherein:
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(a) the grip ring is formed of a plurality of inner and outer radial notches cut alternately from its inner and outer circumferences with the outer portion thereof being uniformly bent in a tube-admitting direction to form an obtuse angle in cross-section; (i) the bent outer portion thereof is inserted in the guide ring groove with the outer notches pointed away from the tube-receiving portion; (ii) the inner notches are pointed away from the tube-receiving portion to grip the surface of the tubing such that longitudinal movement of the release ring towards the inner notches will disengage the inner notches from the tubing and move them into the recess in the elastic sleeve; (b) the release ring has a substantially uniform inner diameter which approximates the outer diameter of the flexible tubing to be coupled, and outer diameter portions which comprise, in sequence; (i) a relatively large outer diameter portion extending beyond the tubing joint to provide a gripping means for axially sliding said release ring; (ii) a relatively small outer diameter portion extending inwardly from said relatively large outer diameter portion into said tubing joint for receiving a portion of a guide ring; and (iii) an intermediate outer diameter portion which tapers to a wedge at the inner end of said release ring for axially pressing against a grip ring to release it from engagement with a flexible tubing and move it against an elastic sleeve. - View Dependent Claims (2, 3, 4)
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Specification