Piston pump and motor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 21, 2017
Grant Date -
Oct 23, 2014
app pub date -
Apr 11, 2014
filing date -
Oct 12, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A plunger pump or plunger motor includes a block accommodating a first cylindrical chamber and a plunger movable in this chamber and a drive shaft connected to this plunger, as well as a second cylindrical chamber and a control valve movable in this second cylindrical chamber. Holes O3 and O4 can alternately be brought into communication with the connection for the delivery pipe by the plunger and with a connecting hole for a pressure line. The control valve can establish a communication between the hole O2 and the connecting hole. The drive shaft is connected to a further plunger which is movable in a third cylindrical chamber in which there is a suction hole or delivery hole. The control valve can alternately establish a communication between the suction hole or delivery hole with a connecting hole for a suction pipe and the connecting hole for the pressure line.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- F15B Class
- 519 Applications Filed
- 441 Patents Issued To-Date
- 84.98 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F15B Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 21, 2028 |
