Patent ID: 6357506
Filing Date: 2002-03-19
Classification: B29C

Abstract:
An apparatus for joining end faces of a pair of the thermoplastic pipes, end faces located on end portions of the thermoplastic pipes, comprising:a clamp means for holding the pair of thermoplastic pipes coaxially, a pressurizing means for bringing into contact under pressure the end faces to be joined of the pair of thermoplastic pipes held by said clamp means, and an orbital vibration generator means supported adjacent to one pipe end portion or both pipe end portions of said pair of thermoplastic pipes for providing orbital vibration, wherein said orbital vibration generator means includes a crank shaft having a shaft portion and a crank portion, wherein the shaft portion and the crank portion have eccentric axes, a motor for rotating the shaft portion of said crank shaft, a bearing attached to the crank portion of said crank shaft, and an orbital vibration clamp for holding a pipe end portion fixed to said bearing to move integrally with said bearing.