Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1988-01-25
1989-10-03
Ward, Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277207R, 277DIG2, 285110, 285230, 285345, F16J 1500
Patent
active
048711802
ABSTRACT:
Production of concrete bell and spigot pipes having a recess (13, 53) in the socket which is relative shallow and is produced using a core (40; 60). The seal (20) made of a relative compact elastomer (16) body may be inserted with its seating portion into the recess (13, 53) at any time after the pipe has been produced. The sealing portion (32) which functions as a combined compression and lip seal has a circular recess of triangular cross section before being pressed together when a pipe system is assembled.
REFERENCES:
patent: 1683076 (1928-09-01), Johnson et al.
Forsheda Rohrdichtungen, "Forsheda 103-Glipp" and 104, Forsheda Company Pamphlets, Sweden, date unspecified, 4 pages.
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