Coupling for attachment to the end of a pipe for securement to the pipe or for joining pipes together
First Claim
1. A coupling for attachment to the end portion of a pipe wherein the end portion of the pipe has a circumferential shoulder spaced from and facing away from the end of the pipe, comprising;
- a coupling body to closely receive an end portion of a pipe therein and to extend over the end portion of the pipe at least to the edge of a circumferential shoulder provided in the end portion of the pipe;
a set of jaw members;
means movably mounting the jaw members on the coupling body for movement toward the pipe received in the coupling body with simultaneous circumferential movement partially around the pipe in one direction and movement away from the pipe received in the coupling body with simultaneous circumferential movement partially around the pipe in the opposite direction, whereby when the jaw members of the set move toward the pipe to a closed position they engage the shoulder to secure the coupling body to the pipe and when the jaw members of the set move away from the pipe to an open position they disengage the shoulder so the pipe can be removed from the coupling body; and
means for moving the jaw members of the set with respect to the coupling body.
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Accused Products
Abstract
A coupling for attachment to the end portion of a pipe having a circumferential shoulder in such end portion includes a coupling body which receives the end portion of the pipe therein and a set of jaw members which, after the end portion of the pipe is received in the coupling body, move to a closed position to engage the shoulder so that the coupling is locked onto the end of the pipe and the pipe cannot be pulled from the coupling because the jaw members acting against the shoulder prevent such movement. The coupling can be provided with sets of jaw members at each end to couple together two pipes with end portion shoulders or have jaw members at one end and threads, flanges, or other types of connectors at the other end. Valves or other fittings may be incorporated into the coupling between the ends of pipes being coupled.
64 Citations
23 Claims
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1. A coupling for attachment to the end portion of a pipe wherein the end portion of the pipe has a circumferential shoulder spaced from and facing away from the end of the pipe, comprising;
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a coupling body to closely receive an end portion of a pipe therein and to extend over the end portion of the pipe at least to the edge of a circumferential shoulder provided in the end portion of the pipe; a set of jaw members; means movably mounting the jaw members on the coupling body for movement toward the pipe received in the coupling body with simultaneous circumferential movement partially around the pipe in one direction and movement away from the pipe received in the coupling body with simultaneous circumferential movement partially around the pipe in the opposite direction, whereby when the jaw members of the set move toward the pipe to a closed position they engage the shoulder to secure the coupling body to the pipe and when the jaw members of the set move away from the pipe to an open position they disengage the shoulder so the pipe can be removed from the coupling body; and means for moving the jaw members of the set with respect to the coupling body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22)
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20. A coupling for joining pipe wherein the end portions of the pipes to be coupled each have a circumferential groove therein adjacent the ends to be joined comprising:
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a cylindrical coupling body sized to closely fit over the ends of the pipes to be joined and extending between the respective grooves in the pipe; a plurality of jaw members; means movably mounting the jaw members on each end of the coupling body for movement radially inwardly with simultaneous circumferential movement partially around the pipe in one direction to engage a groove in a pipe entering the coupling body or for movement radially outwardly with simultaneous circumferential movement partially around the pipe in the opposite direction to release a pipe entering the coupling body; and means for moving the jaws with respect to the coupling body as desired.
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23. A valve to be connected to the end portion of a pipe wherein the end portion of the pipe has a circumferential shoulder spaced from and facing away from the end of the pipe, comprising:
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a valve body having a receiving opening to closely receive an end portion of a pipe therein and to extend over the end portion of the pipe at least to the edge of a circumferential shoulder provided in the end portion of the pipe; a set of jaw members; means movably mounting the jaw members of the set on the valve body for movement toward the pipe received in the receiving opening with simultaneous circumferential movement partially around the pipe in one direction and movement away from the pipe received in the receiving opening with simultaneous circumferential movement partially around the pipe in the opposite direction, whereby when the jaw members of the set move toward the pipe to a closed position they engage the shoulder to secure the valve body to the pipe and when the jaw members of the set move away from the pipe to an open position they disengage the shoulder so the pipe can be removed from the valve body; and means for moving the jaw members of the set with respect to the valve body.
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Specification