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Class Information
Number: 417/240
Name: Pumps > Inertia liquid piston (e.g., momentum, etc.)
Description: Apparatus in which the pumping is effected by a body of liquid which is at least partially confined and forms a liquid piston to act as a pumping member, either the liquid piston or the means confining the liquid or both being set into motion, the inertia of the liquid piston (i.e., the tendency to remain in motion or at rest) or the momentum thereof being effective to produce the pumping action.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6811385 |
Acoustic micro-pump |
Nov. 2, 2004 |
| 6511305 |
Oscillatory pump-conveyor for transporting liquid-solid mixture with the employment of rotational and inertial forces |
Jan. 28, 2003 |
| 6361284 |
Vibrating membrane fluid circulator |
Mar. 26, 2002 |
| 6305917 |
Pump consisting of a mechanism transmitting to a tubular circuit system periodic rotational inertial forces developing in the liquid contained therein continuous pressure and flow |
Oct. 23, 2001 |
| 5961296 |
Vacuum-generating apparatus by applying torricelli's vacuum |
Oct. 5, 1999 |
| 5263341 |
Compression-evaporation method using standing acoustic wave |
Nov. 23, 1993 |
| 5228840 |
Positive displacement pumps |
Jul. 20, 1993 |
| 5174130 |
Refrigeration system having standing wave compressor |
Dec. 29, 1992 |
| 5102303 |
Hydraulic ram |
Apr. 7, 1992 |
| 4687420 |
Sonic pressure wave pump with liquid heating and elevating mechanism |
Aug. 18, 1987 |
| 4540344 |
Energy transfer device |
Sep. 10, 1985 |
| 4488853 |
Fluid pressure ratio transformer system |
Dec. 18, 1984 |
| 4482346 |
Apparatus for infusing medication into the body |
Nov. 13, 1984 |
| 4473339 |
Liquid pump |
Sep. 25, 1984 |
| 4460320 |
Sonic pressure wave surface operated pump with extensible pumping assembly |
Jul. 17, 1984 |
| 4449892 |
Pump with rotary sonic pressure wave generator |
May. 22, 1984 |
| 4407636 |
Self-cleaning submersible pump |
Oct. 4, 1983 |
| 4398870 |
Variable volume sonic pressure wave surface operated pump |
Aug. 16, 1983 |
| 4381177 |
Sonic pressure wave surface operated pump |
Apr. 26, 1983 |
| 4341505 |
Sonic pressure wave pump for low production wells |
Jul. 27, 1982 |
| 4295799 |
Sonic pressure wave surface operated pump |
Oct. 20, 1981 |
| 4293285 |
Pump |
Oct. 6, 1981 |
| 4171852 |
Propulsion of slurry along a pipeline by ultrasonic sound waves |
Oct. 23, 1979 |
| 4121895 |
Kinetic energy type pumping system |
Oct. 24, 1978 |
| 4078871 |
Sea wave energy conversion |
Mar. 14, 1978 |
| 3981624 |
Sonic or energy wave generator and modulator |
Sep. 21, 1976 |
| 3941515 |
Centrifugal fluid pump |
Mar. 2, 1976 |
| 3937168 |
Bilge pump |
Feb. 10, 1976 |
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