Piston pump comprising flat guiding
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 15, 2017
Issued Date -
N/A
app pub date -
Apr 3, 2012
filing date -
Apr 12, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A pumping device includes a working chamber and a piston provided to slide in the working chamber so as to vary the useful volume of the chamber during pumping, and anti-rotation elements for the piston. Advantageously, the anti-rotation elements include an index (107) mounted radially with respect to the axis of the piston and the device includes a longitudinal slot (108), the index being provided so as to move in the slot. Advantageously, the index (107) has two approximately parallel planar faces that extend longitudinally.
First Claim
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International Classification(s)
- 2012 Application Filing Year
- F04B Class
- 820 Applications Filed
- 689 Patents Issued To-Date
- 84.03 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F04B Class
- 0 % 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 | Feb 15, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 15, 2029 |
