Coupling device and method for fabricating a grip ring to be used in such a coupling device
AssigneeGeorg Fischer WAGA N.V.
InventorMichel Paul Hulsebos
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Abstract
Coupling device for a pipe, comprising a sleeve having an insert end for the pipe and a sealing means adapted for realizing a seal around the pipe when inserted in the sleeve, said sealing means comprising a plurality of mutually slidable elements which together form a ring, and a grip ring being mounted within said elements and extending along at least a part of the perimeter of the pipe, the grip ring being formed with dents pressed out of the plane of the grip ring.
Claims3
A coupling device for a pipe, comprising a sleeve having an insert end for receiving the pipe and a sealing means adapted to form a seal around the pipe when inserted in the sleeve, said sealing means comprising a plurality of mutually slidable elements which define a ring, and a grip ring extending along at least a part of the perimeter of the pipe mounted within said elements and having dents adjacent to slit-like openings punched out of said grip ring, the openings having a width B such that the ratio of B/D is less than 3, wherein D is the thickness of said grip ring.
Dependencies are inferred from the claim text.