Method and apparatus for sealing the space between pipes and lin

Details Method and apparatus for sealing the space between pipes and lin Method and apparatus for sealing the space between pipes and lin

1986-08-15

1988-06-21

Swisher, Nancy

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

156287, 156294, 138 97, 138140, 264229, 264269, 264516, 264573, F16L 5700, B29C 4132

Patent

active

047525118

ABSTRACT:
When pipes are provided with comparatively rigid linings, the gaps which tend to appear between the pipe and the lining along the length thereof, and through which gaps gaseous type contents tend to escape, are sealed by providing between the pipe and the lining radially expandable sealing rings spaced along the length of the pipe, those rings compressing when the lining is in place and only partially expanding if the lining tends to separate from the pipe, thereby to provide a series of annular seals along the length of the pipe. The sealing rings may be positioned within the pipe before the lining is applied or may be initially secured to the lining and moved into place with the lining.

REFERENCES:
patent: 4064211 (1977-12-01), Wood
patent: 4529008 (1985-07-01), Appleton
patent: 4622196 (1986-11-01), Wood
patent: 4637754 (1987-01-01), Wood

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