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Class Information
Number: 417/241
Name: Pumps > Inertia liquid piston (e.g., momentum, etc.) > Movable confining means
Description: Apparatus in which the liquid is set in motion by the absolute movement of the means confining the liquid.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4961692 |
Oscillating vessel pump |
Oct. 9, 1990 |
| 4869650 |
Oscillating vessel pump |
Sep. 26, 1989 |
| 4817712 |
Rod string sonic stimulator and method for facilitating the flow from petroleum wells |
Apr. 4, 1989 |
| 4695231 |
Sonic impeller for sonic well pump |
Sep. 22, 1987 |
| 4492528 |
Pressure balanced liquid elevating mechanism |
Jan. 8, 1985 |
| 4488854 |
Constrained wave pump |
Dec. 18, 1984 |
| 4487554 |
Sonic pump for pumping wells and the like employing a rod vibration system |
Dec. 11, 1984 |
| 4416591 |
Reciprocal pump with improved valve |
Nov. 22, 1983 |
| 4412786 |
Positive displacement pump |
Nov. 1, 1983 |
| 4406587 |
Vibration actuated liquid pump |
Sep. 27, 1983 |
| 4370101 |
Constant delivery inertia pump |
Jan. 25, 1983 |
| 4358248 |
Sonic pump for pumping wells and the like employing dual transmission lines |
Nov. 9, 1982 |
| 4342364 |
Apparatus and method for coupling sonic energy to the bore hole wall of an oil well to facilitate oil production |
Aug. 3, 1982 |
| 4242053 |
Free piston fluid energy transfer device |
Dec. 30, 1980 |
| 4210409 |
Solenoid operating pump |
Jul. 1, 1980 |
| 3934601 |
Method of and arrangement for feeding pressure fluid in pulses |
Jan. 27, 1976 |
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