Pipe coupling with built-in grip

Details Pipe coupling with built-in grip Pipe coupling with built-in grip

2007-12-04

2009-08-11

Bochna, David E (Department: 3679)

Pipe joints or couplings

Clamp

Wedge

C285S343000, C285S373000, C285S323000

Reexamination Certificate

active

07571940

ABSTRACT:
The invention provides an improved coupling having an innovative pipe grip preventing inadvertent separation of the two items being coupled. The improved releasable band-clamp coupling comprises a central housing of cross-section resembling a wide, low-wall channel, the housing being curved to be larger than the outer diameter of a pipe, two curved outer clamp members each configured to contact a wall of the housing and to support a ring seal member and to support a sloped mechanical grip ring, there being further provided proximate to the ends of the curved outer clamp members a pair of substantially parallel pair of clamping extensions, and a sloped internally-toothed grip ring comprising a plurality of spaced-apart wedge-shaped gripper units, each unit being connected to both adjacent gripper units by a flexible element to complete said grip ring; and screw clamping elements in contact with said clamping extensions to reduce the distance between said substantially parallel clamping extensions.

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