Fluid handling – With casing – support – protector or static constructional... – Static constructional installations
Patent
1984-06-19
1986-06-10
Schwadron, Martin P.
Fluid handling
With casing, support, protector or static constructional...
Static constructional installations
137314, 52 20, 285196, 285205, 404 26, F16L 500
Patent
active
045937141
ABSTRACT:
A manhole assembly is attached on a fill pipe for an underground storage tank for gasoline, diesel fuel or other types of toxic chemicals. The manhole assembly comprises a bucket-like body attached on an upper end of the fill pipe and a removable cover mounted on an upper end of the body to selectively expose the fill pipe. At least one annular dam is formed on an upper surface of the body and is adapted to nest within an annular groove formed on an underside of the cover. The dam functions as a barrier to prevent the ingress of water into the body during rainstorms and the like. A combined sealing and cushioning assembly attaches a bottom wall of the body to the fill pipe and a drain connection is provided for selectively communicating an internal chamber of the body with the fill pipe.
REFERENCES:
patent: 1616098 (1927-02-01), Wells
patent: 2320187 (1943-05-01), Lawler
patent: 2793056 (1957-05-01), Graff
patent: 3367071 (1968-02-01), MacLaren
patent: 4062376 (1977-12-01), McGrath
patent: 4278115 (1981-07-01), Briles et al.
patent: 4351446 (1982-09-01), Madden
patent: 4408421 (1983-10-01), Pai
patent: 4469115 (1984-09-01), Rockafellow
Novack Sheri M.
Schwadron Martin P.
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