Patent ID: 6467813
Filing Date: 2002-10-22
Classification: F16L

Abstract:
A reinforcement fitting for achieving shrinkage and expansion capabilities while maintaining fluid sealability at a connection point between existing fluid pipes when mounted on the connection point, comprising:an externally fitting portion having a split structure with an inside diameter that can externally fit over the existing fluid pipes without loosening or disconnecting the connection point of the existing fluid pipes a recessed tapered portion formed on an inside of the externally fitted portion with the diameter of the taper decreasing in a direction away from said connection point; a contact member which is internally fitted into said recessed tapered portion and has a tapered contact surface complimentary to said tapered portion, the contact member having a contact portion to come in contact with an outer surface of one of the existing fluid pipes thereby increasing contact resistance with one of the existing fluid pipes when an external force is exerted in a direction to separate the existing fluid pipes from each other; an engagement portion which is able to engage with a flange portion of the other existing fluid pipe when the external force is exerted in the direction to separate the existing fluid pipes; and a cut out portion formed at an outer side of the reinforcement fitting for establishing a clearance for a protruded portion used in connecting the existing fluid pipes.