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Class Information
Number: 417/507
Name: Pumps > Expansible chamber type > Distributor moved by separate fluid responsive surface
Description: Apparatus in which the means to control the flow of fluid into or out of the chamber comprises a distributor, said distributor being at least partially moved cyclically by a fluid reactive surface formed on the distributor, or formed on an element adapted to contact the distributor means.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7427190 |
Hydraulic device for pumping molten metal and/or controlling a molten metal flow |
Sep. 23, 2008 |
| 7188731 |
Variable flexure-based fluid filter |
Mar. 13, 2007 |
| 6848893 |
Compressor check valve |
Feb. 1, 2005 |
| 6814553 |
Dual reciprocating bellows pump, with a pair of interlocking shafts passing through a common pump head and dual pump chambers |
Nov. 9, 2004 |
| 6629820 |
Microfluidic flow control device |
Oct. 7, 2003 |
| 6585499 |
Fluid delivery mechanism having a flush-back operation |
Jul. 1, 2003 |
| 6499974 |
Piston pump |
Dec. 31, 2002 |
| 6318977 |
Reciprocating compressor with auxiliary port |
Nov. 20, 2001 |
| 6164930 |
Apparatus for regulating flow of a pumped substance |
Dec. 26, 2000 |
| 5992452 |
Ball and seat valve assembly and downhole pump utilizing the valve assembly |
Nov. 30, 1999 |
| 5902094 |
Flow control valve for a pressure washer |
May. 11, 1999 |
| 5893708 |
Rotating piston for ball and seat valve assembly and downhole pump utilizing said valve assembly |
Apr. 13, 1999 |
| 5628624 |
Pump barrel valve assembly including seal/actuator element |
May. 13, 1997 |
| 5611675 |
Swash plate compressor with start up flow restrictive inlet spool valve |
Mar. 18, 1997 |
| 5571002 |
Plunger pump system with shuttle valve |
Nov. 5, 1996 |
| 5533876 |
Pump barrel seal assembly including seal/actuator element |
Jul. 9, 1996 |
| 5527164 |
Positive-displacement pump with inlet float chamber |
Jun. 18, 1996 |
| 5454698 |
Plunger pump system with shuttle valve |
Oct. 3, 1995 |
| 5419689 |
Vacuum pump having oil-actuated inlet valve |
May. 30, 1995 |
| 5252037 |
Piston valved vertical pump for particulate materials |
Oct. 12, 1993 |
| 5222872 |
Control system for piston pumps |
Jun. 29, 1993 |
| 5181835 |
Hydraulic pump |
Jan. 26, 1993 |
| 5061156 |
Bellows-type dispensing pump |
Oct. 29, 1991 |
| 5027605 |
Oil injection system for air conditioning equipment |
Jul. 2, 1991 |
| 5011376 |
Valve control system for an air displacement type pump |
Apr. 30, 1991 |
| 4744735 |
Parallel-cylinder, angled-valve fluid pump |
May. 17, 1988 |
| 4740796 |
Bubble jet recording method and apparatus in which a heating element generates bubbles in multiple liquid flow paths to project droplets |
Apr. 26, 1988 |
| 4737084 |
High-pressure plunger pump |
Apr. 12, 1988 |
| 4715795 |
Metering pump |
Dec. 29, 1987 |
| 4691735 |
Plunger valve apparatus for oil well pump |
Sep. 8, 1987 |
| 4460152 |
Hand pump with automatic lock-out |
Jul. 17, 1984 |
| 4453892 |
Submergible pump installations |
Jun. 12, 1984 |
| 4437817 |
Two cylinder viscous material pump |
Mar. 20, 1984 |
| 4424012 |
In-line fluid pump and shuttle valve therefor |
Jan. 3, 1984 |
| 4345881 |
Close-off valve for suction pipes in hydraulic pumps |
Aug. 24, 1982 |
| 4339233 |
Power-assisted valve |
Jul. 13, 1982 |
| 4326839 |
Cylinder unloading mechanism for refrigeration compressor |
Apr. 27, 1982 |
| 4322201 |
IV Pump with back pressure control |
Mar. 30, 1982 |
| 4105373 |
Fluid distributor device for controlling an apparatus for pumping wet concrete and the like |
Aug. 8, 1978 |
| 4093404 |
Apparatus for preparation of matrices containing frangible particulate matter |
Jun. 6, 1978 |
| 4067484 |
Variably adjustable measured increment power dispensing apparatus |
Jan. 10, 1978 |
| 4065230 |
Reciprocating infusion pump and directional adapter set for use therewith |
Dec. 27, 1977 |
| 4060347 |
Liquid fuel pumping apparatus |
Nov. 29, 1977 |
| 4054116 |
Emergency fuel line closure |
Oct. 18, 1977 |
| 4030860 |
Variable proportional metering apparatus |
Jun. 21, 1977 |
| 3994626 |
Pump apparatus |
Nov. 30, 1976 |
| 3994356 |
Safety shut-off fuel system |
Nov. 30, 1976 |
| 3969041 |
Shut-off valve for automotive fuel flow |
Jul. 13, 1976 |
| 3967606 |
Fuel pump for internal combustion engines |
Jul. 6, 1976 |
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