Fluid handling – With casing – support – protector or static constructional... – Guards and shields
Patent
1979-12-17
1981-11-24
Chambers, A. Michael
Fluid handling
With casing, support, protector or static constructional...
Guards and shields
137382, 220 85P, F16K 3500, B65D 2500
Patent
active
043018289
ABSTRACT:
A protective cover device for use in maintaining the inlet and/or outlet valves mounted in a wall of a liquid storage tank in a contaminant-free state during periods of both use and non-use and wherein the tank valve projects outwardly from a wall on the tank coaxially through a mounting flange mounted thereon in surrounding relation to the projecting valve. More specifically, a protective cover device of the foregoing character comprising a pair of essentially complementary mating cover elements adapted to be hingedly connected together and defining an aperture in at least one pair of mating edges thereof suitable for permitting the coupling of an inlet/outlet liquid conduit--typically a hose--to the tank valve while the protective cover device is in place and wherein first and second imperforate cover means are provided for respectively covering the aperture when the tank valve is closed and when the tank valve is opened, such second cover means including a liquid conduit projecting therethrough and having means for coupling the inwardly projecting portion of the conduit to the tank valve, thereby precluding entry of contaminants to the interior of the protective cover device (i) when the valve is closed and the first cover means is in place, and (ii) when the valve is open and the second cover means is in place. In a preferred embodiment, the protective cover device provides a dust-tight valve enclosure which finds particularly advantageous use in connection with mobile tank trucks of the type commonly employed in the dairy industry and used to transport comestible products such as milk.
REFERENCES:
patent: 1084996 (1914-01-01), Wright
patent: 1652510 (1927-12-01), Allen
patent: 3480252 (1969-11-01), Simons
patent: 3871401 (1975-03-01), Lyons
patent: 3963144 (1976-06-01), Berwahl
patent: 3999825 (1976-12-01), Cannon
patent: 4137943 (1979-02-01), Rath
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