Pipe coupling
First Claim
1. A pipe coupling comprising:
- a sealing collar;
a sleeve defining an interior sealing chamber for accommodating said sealing collar, said sleeve and said sealing collar configured to cooperate to sealingly engage adjacent end portions of two pipes to be coupled;
a first supporting body with an interior accommodating said sleeve; and
at least one locking element for each said end portion of the two pipes to be coupled, each said locking element being supported by said first supporting body, each said locking element catching the pipe end portion when said pipe end portion is under an extraction stress, thereby radially raising the locking element to a generally radial clamping position;
wherein each locking element includes a first rectangular clamping plate and spring means, the spring means supported by the first supporting body, the first clamping plate biased by said spring means in the direction of the extraction stress; and
wherein said first supporting body is held on said sleeve.
1 Assignment
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Accused Products
Abstract
A pipe coupling for joining a pair of pipe ends has a sleeve containing a lip seal and a pair of opposing mirror image annular support bodies each with a first end engaged with the sleeve and each extending axially away from the sleeve to a second end with a radial wall having a circular opening sized for the pipe ends at the opposite end. Each supporting body containing a clamping member adjacent the radial wall and intermediate the supporting body and outer surface of the pipe end. The clamping member pivotal between an inclined position and an upright position and biased to the upright clamping position. Pipe ends are inserted with the clamping members in the inclined position. After insertion, an extraction force on the pipe ends moves the clamping members to an upright clamping position. A circumferential band secures the first ends of the supporting bodies to the sleeve.
53 Citations
20 Claims
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1. A pipe coupling comprising:
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a sealing collar; a sleeve defining an interior sealing chamber for accommodating said sealing collar, said sleeve and said sealing collar configured to cooperate to sealingly engage adjacent end portions of two pipes to be coupled; a first supporting body with an interior accommodating said sleeve; and at least one locking element for each said end portion of the two pipes to be coupled, each said locking element being supported by said first supporting body, each said locking element catching the pipe end portion when said pipe end portion is under an extraction stress, thereby radially raising the locking element to a generally radial clamping position; wherein each locking element includes a first rectangular clamping plate and spring means, the spring means supported by the first supporting body, the first clamping plate biased by said spring means in the direction of the extraction stress; and wherein said first supporting body is held on said sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A pipe coupling for receiving a pair of axially aligned pipe ends with a circumferential surface, the pipe coupling comprising:
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an annular sleeve with a generally C-shaped cross-section in the axial direction, the sleeve defining a sealing chamber; an annular sealing collar in the sealing chamber; a pair of opposing annular supporting bodies each having a first end with a tab engaged with the sleeve and a second end with an axially displaced radial wall with a circular opening for receiving and restraining one of the pipe ends, each supporting body having an inwardly facing recess adjacent said radial wall; and a pair of locking members, one locking member for each supporting body, each locking member configured as a generally rectangular clamping plate and pivotally placed within the recess on the supporting body, each clamping plate having a pipe engaging edge biased in an extraction direction by springs on the supporting body whereby when the pair of pipe ends inserted in the pipe coupling are subjected to extraction stress, the locking members catch the circumferential surface of the pair of pipe ends and are straightened up radially to a clamping position, thereby providing a clamping force on the pipe ends. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification