Liquid reservoir, in particular for an aqueous urea solution
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 31, 2017
Grant Date -
Sep 12, 2013
app pub date -
Oct 18, 2011
filing date -
Nov 12, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a liquid reservoir (1), in particular for an aqueous urea solution, comprising a buffer storage means (2) arranged on the bottom of the liquid reservoir (1) in the installation position, a liquid delivery unit (3), at least one, preferably a plurality of first filter elements (4) arranged on the bottom in the installation position outside the buffer storage means (2), each of which first filter elements is connected to the liquid delivery unit (3) via a liquid line (5), the first filter elements (4) being constructed such that the filter fabric of the first filter elements (4) is permeable to the liquid located in the liquid reservoir (1) and impermeable to air, a second filter element (6) being arranged between the interior of the buffer storage means (2) and the liquid delivery unit (3), which second filter element is constructed such that the filter fabric of the second filter element (6) is permeable to the liquid located in the liquid reservoir (1) and impermeable to air, the breakthrough pressure of the second filter element (6), at which air is delivered through the filter element, being greater than the breakthrough pressure of the first filter elements (4), furthermore comprising a first valve (7) between the liquid delivery unit (3) and the first filter elements (4), the opening pressure of the first valve (7) being smaller than the breakthrough pressure of the second filter element (6).
First Claim
Other Claims data not available
Family
International Classification(s)
- 2011 Application Filing Year
- F02M Class
- 906 Applications Filed
- 766 Patents Issued To-Date
- 84.55 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- F02M Class
- 17.36 % this patent is cited more than
- 8 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 30, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 30, 2029 |
