Pipe joints or couplings – Flexible joint – rigid members – Radial and longitudinal expansion compensators
Patent
1997-05-14
1999-03-09
Nicholson, Eric K.
Pipe joints or couplings
Flexible joint, rigid members
Radial and longitudinal expansion compensators
285300, 285266, F16L 5102, F21D 1115
Patent
active
058790322
ABSTRACT:
A flexible joint for a culvert includes a pair of annular connecting members, a flexible sealing member fixed to the connecting members, bearing means provided radially inwardly of the flexible sealing member and fixed to the connecting members for supporting the flexible sealing member to prevent inward deformation of the flexible sealing member. The bearing means may consist of bearing bars arranged circumferentially or may consist of a pair of annular support members. The flexible joint further includes cylinders fitted loosely on the bearing bars. The flexible joint may further include an annular joint filling member provided between the connecting members for preventing flowing of secondary lining concrete into space between the connecting members and having a thickness in the radial direction which enables continuous depositing of the concrete from one culvert unit to another culvert unit to be joined together.
REFERENCES:
patent: 3460856 (1969-08-01), Van Tine et al.
patent: 3997194 (1976-12-01), Eifer et al.
patent: 4848803 (1989-07-01), Bachmann
patent: 4885703 (1989-12-01), Deering
patent: 5011194 (1991-04-01), Nitta
patent: 5472295 (1995-12-01), Ikeda
patent: 5653474 (1997-08-01), Ninacs
Nicholson Eric K.
Seibu Polymer Kasei Kabushiki Kaisha
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