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US 4,224,701 AGranted
Pest and odor preventive sanitary drainer
OwnerChing-Piao Huanginventor
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a pest and odor preventive sanitary drain which utilizes the continuous property of liquids and permits a twisting downward discharge of waste water and keeps a certain waste water retention level in the water holder therebeneath so that the inlet of the discharge pipe is obstructed; in addition, a deodorizer is used for complete prevention of odor and pests towards a house so that indoor sanitation is maintained and human health is protected.
Claims3
A drain insert which prevents odor and pests from entering with a living area comprising:
- a water cup (13) having a top portion countersunk below a bottom surface of a sink or the like and disposed within a drainage hole of the sink, and having a bottom portion provided with an annular flange (12) for connection with a drainage pipe,
- a cover nested on said top portion of said water cup having a plurality of openings for passage of water therethrough, said cover having a funnel extending downwardly within said water cup, and
- a water drum (14) carried on a lower rim portion of said water cup above said flange (12) so that said funnel extends therewithin and said water drum is offset relative to longitudinal axis of said water cup whereby water from the sink is funneled into said water drum which when overfilled passes into the drain pipe over said water drum.
Dependencies are inferred from the claim text.