Air admittance valve
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 11, 2022
Grant Date -
Oct 14, 2021
app pub date -
Aug 10, 2017
filing date -
Aug 12, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
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US Family Size
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Non-US Coverage
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Abstract
The present invention relates to an air admittance valve (AAV) that operates automatically at low pressures to selectively open and close an air passageway between an inlet and an outlet. The AAV comprises a valve body having a centrally disposed, internal valve chamber in communication with the ambient environment, and having a valve seat. The AAV includes a sealing member having a flexible diaphragm that is fastened to a support ring, the ring defining one or more lugs on an outer periphery thereof. The AAV further includes a cap member within which the sealing member may be disposed, such that the one or more lugs may interact with an interior surface of the cap. The sealing member may selectively seal or unseal from the valve seat in response to pressure differentials between the inlet and the outlet.
First Claim
Other Claims data not available
Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| WO | A1 | WO2018031728 | Aug 10, 2017 |
| CA | A1 | CA3032684 | Aug 10, 2017 |
International Classification(s)
- 2017 Application Filing Year
- F16K Class
- 2135 Applications Filed
- 1600 Patents Issued To-Date
- 74.95 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F16K Class
- 0 % this patent is cited more than
- 3 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Apr 11, 2026 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 11, 2030 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 11, 2034 |
