Slip on groove coupling with multiple sealing gasket
First Claim
Patent Images
1. A coupling for joining two pipes, comprising:
- an upper housing;
a lower housing;
at least one fastening device coupling the upper housing to the lower housing; and
a gasket positioned within the upper and lower housings and having a concave outer diameter,wherein the gasket is comprised of two primary seals, one on each outer edge of the gasket, and at least two secondary seals on a rib protruding from an inner surface of the gasket and between the two primary seals, the primary seals adapted to slide over a pipe end so that at least a portion of the pipe is extending beyond each edge of the gasket.
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Accused Products
Abstract
Methods, gaskets, and couplings for connecting two pipes are disclosed. One embodiment of the method includes the steps of placing the assembled coupling over one end of a pipe, aligning the second pipe with the first pipe, sliding the coupling off the end of the first pipe so that a portion of the coupling is around each pipe, and securing the coupling.
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Citations
33 Claims
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1. A coupling for joining two pipes, comprising:
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an upper housing; a lower housing; at least one fastening device coupling the upper housing to the lower housing; and a gasket positioned within the upper and lower housings and having a concave outer diameter, wherein the gasket is comprised of two primary seals, one on each outer edge of the gasket, and at least two secondary seals on a rib protruding from an inner surface of the gasket and between the two primary seals, the primary seals adapted to slide over a pipe end so that at least a portion of the pipe is extending beyond each edge of the gasket. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A gasket, comprising:
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a concave outer diameter; two primary seals, one on each outer edge of the gasket; and at least two secondary seals on a rib protruding from an inner surface of the gasket and between the two primary seals, the primary seals adapted to slide over a pipe end so that at least a portion of the pipe is extending beyond each edge of the gasket. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification