Self-actuating flood guard
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United States of America Patent
Stats
-
Feb 12, 2019
Grant Date -
Oct 25, 2018
app pub date -
Oct 29, 2016
filing date -
Nov 4, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An upper level of a multi-level building is guarded from flooding by water present in one of the levels of the building where the upper level is reached from the lower level (or vice versa) by connecting stairs. A flight of stairs bridging the levels is buoyant and pivotally connected to the building at one end of the flight adjacent one of the levels such that on occasion of water rising originating in one of the levels, the flight rotates upward on the axis of the pivot to block water from entering the upper level.
First Claim
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International Classification(s)
- 2016 Application Filing Year
- E02B Class
- 230 Applications Filed
- 184 Patents Issued To-Date
- 80 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- E02B Class
- 0 % this patent is cited more than
- 6 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Aug 12, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Aug 12, 2030 |
