PURPOSE: To obtain a lining pipe wherein the folded-back end part of a lining synthetic resin pipe is closely bonded to the outer peripheral surface of the end part of an outer pipe by expanding a pressure link member to expand the end part of the lining synthetic resin pipe and folding back the lining synthetic resin pipe to the outer peripheral surface of the end part of the outer pipe to fit the end part of the pipe in an annular groove.
CONSTITUTION: The end part of the lining synthetic resin pipe 52 protruding from the end part of an outer pipe 51 is softened under heating and a cylinder 21 is operated to push out a shaft rod 2 to the deep part of the outer pipe 51. Next, when the shaft rod 2 is inserted in the outer pipe 51 to be pulled backed, a pressure link member 41 is pushed by a link member 42 to be erected and the pressure link member 41 expanded in its diameter expands the end part of the lining synthetic resin pipe 52 protruding from the leading end of the outer pipe 51. Since the elastic pressing force of a coil spring 34 acts on the pressure link member 41, the end part of the lining synthetic resin pipe 52 is reasonably folded back to the outer peripheral surface of the end part of the outer pipe 51. The pressure link member 41 is again made horizontal to push a support frame body 3 in the outer pipe 51. By this method, the folded-back end part of the synthetic resin pipe 52 is closely bonded to the outer peripheral surface of the end part of the outer pipe 51.
OSONE MASAHIDE
OHASHI OSAMU
MIZOGUCHI ATSUO
KAWASAKI MASAYUKI
UJIHARA TATSUSHI
FUJII HIROSHI
YOKOTA SUEO
SHIBATA NAOMI
HORII YUKIO
NISHIBORI YOJI
