Document Type and Number:
Japanese Patent JPH0253669
Kind Code:
B2
Abstract:
A pipe coupling for coupling together pipe ends of pipes to be interconnected comprises a clampable housing approximately in the shape of a tightening clamp or collar for being clamped about the pipe ends such that tightening of the clampable housing causes the housing to contract or draw together around the pipes to be connected. The housing possesses annular or ring-shaped, inwardly flexed flanges at its end faces. A sealing gasket made from an elastic material such as synthetic rubber is enclosed in the housing and possesses a substantially C-shaped axial cross-sectional configuration. Clamping rings provided on the inner sides of the sealing gasket are capable of being reduced in diameter and supported in axial direction on the housing. These clamping rings are provided on their inner surfaces with claws or claw-like elements. To limit the penetration depth of these claws, especially in soft pipe material, the substantially cylindrical clamping rings are supported in the housing by their outer jacket surfaces on the inner edges of the housing flanges and by respective stop members as well as respective substantially conical spring rings. The claws of the clamping rings comprise teeth protruding inwardly from the inner jacket surfaces of the clamping rings towards the centers of the pipe ends. These teeth possess convex backs arched away from the center portion of the pipe coupling and substantially flat front surfaces which extend into clamping ring recesses located substantially directly before these front surfaces.
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Inventors:
IMANUERU SHUTORAUBU
Application Number:
JP14119886A
Publication Date:
November 19, 1990
Filing Date:
June 17, 1986
Export Citation:
Assignee:
IMANUERU SHUTORAUBU
International Classes:
F16L27/12; F16L17/02; F16L17/04; F16L21/00; F16L21/06; F16L21/08; F16L39/00
Next Patent: JPH0253670