Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1998-10-08
2000-02-29
Ferensic, Denise L.
Fluid handling
Processes
Cleaning, repairing, or assembling
137315, 1375278, 137371, F16L 5518
Patent
active
060296844
ABSTRACT:
An inspection chamber for use in sanitary sewer systems has an integral back-flow prevention valve. The valve can be installed through an access pipe with the inspection chamber in place underground. The valve does not interfere with the installation or removal of a plug in the inspection chamber during construction and inspection of the sewer system. The inspection chamber comprises a clip oriented to receive a valve member from the direction of an access port. The valve member comprises a pin connected to a flap member by a narrow bridge member. The flap member has a projecting handle member. An installation tool holds the valve member by the handle member and provides a tab which can be hammered downwardly to snap the pin into the clip thereby securing the valve member in the inspection chamber. An inspection chamber according to the invention avoids the necessity of providing a separate buried back-flow prevention valve.
REFERENCES:
patent: 353888 (1886-12-01), Simpkins
patent: 447387 (1891-03-01), Wade
patent: 474843 (1892-05-01), Mahan
patent: 611074 (1898-09-01), Mowe
patent: 649002 (1900-05-01), Skaife
patent: 791326 (1905-05-01), Dale
patent: 922262 (1909-05-01), Clemens, Jr.
patent: 1869258 (1932-07-01), Holland
patent: 2628056 (1953-02-01), Fuller
patent: 3538514 (1970-11-01), Schimert et al.
patent: 3566500 (1971-03-01), Simon
patent: 3626148 (1971-12-01), Woytowich et al.
patent: 3719200 (1973-03-01), Draper et al.
patent: 3797811 (1974-03-01), Jullien et al.
patent: 3824629 (1974-07-01), Shiley
patent: 3948282 (1976-04-01), Yano
patent: 4039004 (1977-08-01), Luthy
patent: 4064902 (1977-12-01), Swenson
patent: 4272854 (1981-06-01), Bokros
patent: 4311163 (1982-01-01), Langevin
patent: 4391289 (1983-07-01), Adams
patent: 4576193 (1986-03-01), Herve
patent: 4605031 (1986-08-01), Grund
patent: 4986301 (1991-01-01), Ziliani et al.
patent: 5020567 (1991-06-01), Proulx
patent: 5469881 (1995-11-01), Phan et al.
patent: 5740830 (1998-04-01), Mankins
Ferensic Denise L.
Kim Joanne Y.
Le-Ron Plastics Inc.
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