Pipe to manhole seal

Details Pipe to manhole seal Pipe to manhole seal

1996-06-17

1998-04-21

DePumpo, Daniel G.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 11, 277152, 285 23, F16J 900

Patent

active

057410151

ABSTRACT:
A sealing assembly and method in which an elastomeric sealing sleeve is stretched over a strippable core, one end of the sleeve sealed to a hole in manhole structure either by casting in or by an expandable clamp. A pipe is inserted in the core and the core stripped out by tearing along a helical preweakening to allow the other end of the sleeve to constrict onto the pipe.

REFERENCES:
patent: 3515798 (1970-06-01), Sievert
patent: 3529836 (1970-09-01), Hyde
patent: 3759280 (1973-09-01), Swanson
patent: 4103901 (1978-08-01), Ditcher
patent: 4159829 (1979-07-01), Ditcher
patent: 4389440 (1983-06-01), Keith
patent: 4503105 (1985-03-01), Tomioka
patent: 4625976 (1986-12-01), Gilbert
patent: 4805920 (1989-02-01), Gavin
patent: 5087492 (1992-02-01), Vallauri et al.
patent: 5529312 (1996-06-01), Skinner et al.
patent: 5560969 (1996-10-01), Portas

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