Shower base with flow enhancing covered drain

Details Shower base with flow enhancing covered drain Shower base with flow enhancing covered drain

2006-12-20

2010-06-22

Huson, Gregory L (Department: 3751)

Baths, closets, sinks, and spittoons

Shower

Particular construction

C004S612000

Reexamination Certificate

active

07739757

ABSTRACT:
A shower enclosure base has a flow enhancing flush-mounted drain cover that conceals the drain opening and provides a flat stepping surface. Drain flow is achieved through a narrow peripheral passage between the drain cover and the drain well in which it is seated. Despite the reduced flow area of passage, flow enhancing features of the drain cover serve to improve the flow rate through the drain. These features are radially converging ribs at the underside of the drain cover that interrupt the natural tendency for drain water to form a vortex as it passes into and through a circular drain opening. The drain cover can be removably secured to the base by suction cups that attach to the drain well.

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Sterling. “Ensemble, Series 7213, 60” Shower Receptor. “Model No. 72131100”. SterlingPlumbing.com online catalog. Online catalog page, dated Oct. 26, 2005.
Delafon. “Shower Receptors”. Model Nos. E2192, E2193, E2194, E2196, E N185, E N191, E N186, E N187 and E N188. Delafon catalog p. 106. Admitted prior art.
Duravit. Tub for Bathing. Admitted prior art.
Kallista. “Barbara Barry Barry Collection—Toilet Lid”. Model No. P70070-00-00. Kallista catalog. Copyright 1999 Kallista Inc.

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