Hinged cover for use in a clarifier tank
AssigneeNEFCO, Inc.
InventorEarle Schaller
Life of this patent
Estimating the term…
Abstract
A cover apparatus for inhibiting the growth of algae on the fluid-contacting surfaces of a water treatment tank and for capturing noxious gases, the tank including a central influent, at least one substantially vertical peripheral wall having an upper and interior surface, a peripheral baffle having inside and outside surfaces, a substantially vertical weir, a spillway, and a launder channel having a width. The cover apparatus includes at least one panel member positionable over at least a portion of the launder channel to prevent light from reaching interior surfaces thereof. In an embodiment of the present invention, alternating covers are provided with a molded recess so that the covers may be mounted in end-to-end alignment to form a substantially sealed launder channel region.
Claims20
A cover for use in a water treatment tank apparatus including an influent, at least one substantially vertical peripheral wall having an upper and an interior surface, a substantially vertical weir connected to said vertical peripheral wall, and a launder channel having a width, said cover comprising:
- a trough cover panel having first and second ends, said first end being secured to the tank;
- support means coupled to said tank wall for supporting said first end of said cover means;
- a weir cover having first and second ends;
- hinge means coupled to said second end of said trough cover panel and to said first end of said weir cover for pivoting said trough cover panel toward and away from said tank about a pivot axis between a first closed position and a second open position so as to allow access to said launder channel;
- and
- a support flange for supporting said weir cover at said substantially vertical wall so that said second end of said weir cover is cantilevered over said vertical weir and terminates at a free end, said support flange having a first end and a second end distal to said first end, said first end secured to said launder channel and said second end coupled to said weir cover.
A cover for use in a water treatment tank apparatus, having a peripheral wall and a substantially vertical wall disposed between a weir region and a launder channel region, said cover comprising:
- a panel member, having a first end and a second end, for covering said weir region and said launder channel region of said tank;
- hinge means, coupled to said panel member, for pivoting said panel member toward and away from said tank about a pivot axis between a first closed position and a second open position so as to allow access to said tank;
- and
- a support flange for supporting said panel member at said substantially vertical wall so that said second end of said panel member is cantilevered over said weir region, said support flange having a first end and a second end distal to said first end, said first end secured to said substantially vertical wall and said second end configured to contact and support said panel member when said panel member is in said first closed position.
Dependencies are inferred from the claim text.