Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1978-06-15
1980-05-20
Moon, Charlie T.
Metal working
Method of mechanical manufacture
Assembling or joining
29235, 285230, B23P 1102
Patent
active
042031907
ABSTRACT:
A method for connecting a sewer pipe to a larger pipe or manhole wherein the connection between the pipe and manhole opening is sealed by means of an elastomeric gasket or boot. In one embodiment of the invention, the pipe is inserted into the manhole opening and an annular elastomeric gasket is positioned over the annular space between the pipe and opening. An extensible jack, which has an annular plunger element having a diameter substantially equal to that of the gasket, is braced against the wall of the manhole opposite the opening and extended so as to press the gasket between the opening and pipe. In an alternative embodiment, a rigid ring is inserted within one end of an elastomeric boot such that the outer diameter of the boot-ring assembly is slightly larger than the inner diameter of the opening. The boot is inserted into the opening up to the enlarged end, the jack is braced against the opposite wall of the manhole and extended thereby pressing the gasket and ring into the opening. Due to the elastomeric nature of the boot, it is compressed between the manhole opening and the rigid ring so that a compressive watertight seal is achieved.
REFERENCES:
patent: 2468924 (1949-05-01), Courtier
patent: 2763055 (1956-09-01), Hardy
patent: 2807079 (1957-09-01), Josephson
patent: 3289286 (1966-12-01), Belanger
patent: 3348850 (1967-10-01), Scales
patent: 3787078 (1974-01-01), Williams
patent: 3958313 (1976-05-01), Rossborough
patent: 3982777 (1976-09-01), Martin
Temple Lowell D.
Williams Richard L.
Jeffers Albert L.
Moon Charlie T.
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