Airlift pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 2, 2018
Grant Date -
Oct 5, 2017
app pub date -
Jun 15, 2017
filing date -
Aug 16, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An airlift pump comprising a hollow, cylindrical main body having an injection hole near the bottom end, a channel routed in the outside surface of the main body and extending continuously from the injection hole to the top end, and an air tube seated in the channel and bonded to the main body. The air tube comprises an injection end having an elbow forming an injection angle such that the air is injection into the main body in a downward direction toward the bottom end. The air tube further comprises a receiving end extending past the top end of the main body and connecting to air supply tubing. The pump has a restricted lateral width enabling the pump to fit inside the narrow monitoring wells typical in the groundwater monitoring industry.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2017 Application Filing Year
- F04F Class
- 96 Applications Filed
- 76 Patents Issued To-Date
- 79.17 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F04F Class
- 0 % this patent is cited more than
- 7 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 | Apr 2, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 2, 2030 |
