Patent US4224701A successfully refreshed from Google Patents.
US4224701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pest and odor preventive sanitary drainer
Assignee: Individual
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Filing: 1978-10-04
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Granted: 1980-09-30
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Expires: 1998-10-04
Abstract
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.
Inventors
- 👤 Ching-Piao Huang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:10
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/126; E03C1/28; E03C1/282; E03C1/29
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
154 words
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.
Claim 2
Dependent Claim
154 words
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.
Claim 3
Dependent Claim
24 words
The device of claim 1 further including deodorizing dispensing means disposed above a retained water level so as to inhibit odors from the drain.
Claim 4
Dependent Claim
34 words
The device of claim 2 in which said funnel supports said deodorizing means which is defined by an apertured plate extending across said funnel having a socket thereon for the disposition of a deodorant.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |