US3781923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating system for a water closet
Assignee: Eisenwerke Gaggenau GmbH
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Filing: 1971-07-27
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Granted: 1974-01-01
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Expires: 1991-07-27
Abstract
Abstract A ventilating system for a water closet installation comprises a hollow cover member mounted on the flushing tank to replace the standard cover. Extractor fan means in the hollow cover draws foul air from the installation and passes it through a filter to ambient atmosphere. The hollow cover member may also include electrically controlled flush-actuating means.
Inventors
- 👤 H Maisch
- 👤 E Jung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:27
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/04; E03D9/05; E03D9/052
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
162 words
A ventilating system for a water closet including a water closet pan and a flushing tank connected thereto by a flushing pipe, said ventilating system comprising a hollow cover member adapted to be removably fitted onto said flushing tank to replace a normal one-piece cover member, means for normally establishing communication between said flushing valve means positioned within said tank, flushing pipe and the space above the water level in said tank through said flushing valve means, said flushing valve means when actuated allowing water from said flushing tank to descend into said flushing pipe, said cover member including extractor fan means operable to withdraw air from said space within said tank and pass said air to the interior of said hollow cover member, outlet means providing an outlet from said interior of said hollow cover member to the ambient atmosphere immediately adjacent said water closet, and air filter means arranged in the outlet path of said air before said outlet means.
Claim 2
Dependent Claim
162 words
A ventilating system for a water closet including a water closet pan and a flushing tank connected thereto by a flushing pipe, said ventilating system comprising a hollow cover member adapted to be removably fitted onto said flushing tank to replace a normal one-piece cover member, means for normally establishing communication between said flushing valve means positioned within said tank, flushing pipe and the space above the water level in said tank through said flushing valve means, said flushing valve means when actuated allowing water from said flushing tank to descend into said flushing pipe, said cover member including extractor fan means operable to withdraw air from said space within said tank and pass said air to the interior of said hollow cover member, outlet means providing an outlet from said interior of said hollow cover member to the ambient atmosphere immediately adjacent said water closet, and air filter means arranged in the outlet path of said air before said outlet means.
Claim 3
Dependent Claim
29 words
A ventilating system as claimed in claim 1 further comprising electromagnetically operated means fitted in said hollow cover means for actuating said flushing valve means in said flushing tank.
Claim 4
Dependent Claim
33 words
A ventilating system as claimed in claim 2, wherein said electromagnetically operated means include an electromagnet having an armature, said armature being linked to a flushing lever for actuating said flushing valve means.
Claim 5
Dependent Claim
32 words
A ventilating system as claimed in claim 2, wherein said flushing valve means includes valve means situated at the end of said flushing pipe where said flushing pipe enters said flushing tank.
Claim 6
Dependent Claim
34 words
A ventilating system as claimed in claim 4, wherein said communication normally established between said flushing pipe and said space above the water level in said tank is established through said flushing valve means.
Claim 7
Dependent Claim
43 words
A ventilating system as claimed in claim 2 further comprising electrical control means for controlling operation of said electromagnetically operated means and said extractor fan means, and contact means mountable under a seat for the water closet pan for switching said control means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |