Liquid-blocking ring assembly for surface drains

Details Liquid-blocking ring assembly for surface drains Liquid-blocking ring assembly for surface drains

1994-09-01

1996-06-18

Taylor, Dennis L.

Hydraulic and earth engineering

Fluid control, treatment, or containment

210163, 405303, E02B 316

Patent

active

055271316

ABSTRACT:
A light-weight, liquid-blocking ring assembly for a surface drain for preventing a harmful liquid spilled nearby from entering the drain, which can be quickly and easily installed by a single person, and includes positive verification that none of the undesired liquid has entered the drain. The assembly includes (1) a center portion having a latching mechanism for attaching and drawing the assembly towards the drain, (2) a peripheral band which surrounds and is spaced from the drain, and which carries at its bottom edge a resilient gasket conformable to the surface surrounding the drain, and (3) an intermediate structure connecting the center portion and the peripheral band without blocking a clear view of the entire surface surrounding the drain.

REFERENCES:
patent: 2859875 (1958-11-01), Wilkie
patent: 3828931 (1974-08-01), Henricksen
patent: 4035297 (1977-07-01), Aldridge et al.
patent: 4487690 (1984-12-01), Logsdon
patent: 4630962 (1986-12-01), Thomann et al.
patent: 4838732 (1989-06-01), Clark et al.
patent: 5141633 (1992-08-01), Walczak et al.
Lab Safety Supply, 1994 General Catalog, 1994 Winter/Spring Edition, p. 6 0.

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