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Class Information
Number: 138/43
Name: Pipes and tubular conduits > With flow regulators and/or baffles > Restrictors > Tortuous path > Variable restriction
Description: Devices wherein the device is adjustable to vary the restriction.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7431224 |
Fluid control device |
Oct. 7, 2008 |
| 7353845 |
Inline bladder-type accumulator for downhole applications |
Apr. 8, 2008 |
| 7325572 |
Flow restrictor device for a medical apparatus |
Feb. 5, 2008 |
| 7320340 |
Fluid pressure reduction devices |
Jan. 22, 2008 |
| 7291194 |
Intermittent mixer with low pressure drop |
Nov. 6, 2007 |
| 7288128 |
Intermittent mixer with low pressure drop |
Oct. 30, 2007 |
| 7285210 |
Zero waste reverse osmosis water filtering |
Oct. 23, 2007 |
| 7237573 |
High pressure, low flow rate fluid flow control |
Jul. 3, 2007 |
| 7017611 |
One-piece manifold for a reverse osmosis system |
Mar. 28, 2006 |
| 6974116 |
Rotary ball valve assembly |
Dec. 13, 2005 |
| 6830062 |
Spigot freeze dripper |
Dec. 14, 2004 |
| 6789567 |
Bi-directional constant flow device |
Sep. 14, 2004 |
| 6695011 |
Flow regulator |
Feb. 24, 2004 |
| 6681807 |
Asymmetric bidirectional flow device |
Jan. 27, 2004 |
| 6631738 |
Flow control valve |
Oct. 14, 2003 |
| 6631737 |
Flow limiter |
Oct. 14, 2003 |
| 6615873 |
Choke valve for automatic transmission |
Sep. 9, 2003 |
| 6550956 |
Extensional flow mixer |
Apr. 22, 2003 |
| 6439267 |
Adjustable flow diffuser |
Aug. 27, 2002 |
| 6401758 |
Variable pitch thread configuration |
Jun. 11, 2002 |
| 6390132 |
Fluid stream pulse damper |
May. 21, 2002 |
| 6312232 |
Method and apparatus for suppressing resonance |
Nov. 6, 2001 |
| 6305356 |
Common rail system |
Oct. 23, 2001 |
| 6305836 |
Force absorbing homogenization valve |
Oct. 23, 2001 |
| 6289934 |
Flow diffuser |
Sep. 18, 2001 |
| 6238080 |
Homogenization valve with outside high pressure volume |
May. 29, 2001 |
| 6238081 |
Ultra-lean dilution apparatus |
May. 29, 2001 |
| 6220301 |
Drainage system |
Apr. 24, 2001 |
| 6216741 |
Flow limiter |
Apr. 17, 2001 |
| 6158455 |
Antifreeze cap for faucet |
Dec. 12, 2000 |
| 6119730 |
Precision laminar flow element for use in thermal mass flow sensors and flow controllers |
Sep. 19, 2000 |
| 6089274 |
I-type counterflow absorber |
Jul. 18, 2000 |
| 5937909 |
Throttle element for a vehicle |
Aug. 17, 1999 |
| 5937901 |
Rotary noise attenuating valve |
Aug. 17, 1999 |
| 5934330 |
Water jet controller and flow limiting device for sanitary fittings |
Aug. 10, 1999 |
| 5899564 |
Homogenization valve |
May. 4, 1999 |
| 5884667 |
Variable flow restricting devices |
Mar. 23, 1999 |
| 5871033 |
Suction pipe for the combustion air of a heater |
Feb. 16, 1999 |
| 5829246 |
Self-cleaning augmentor fuel drain metering device |
Nov. 3, 1998 |
| 5819775 |
Low flow rate valve |
Oct. 13, 1998 |
| 5749650 |
Homogenization valve |
May. 12, 1998 |
| RE35726 |
Gauge block having check valve with orifice |
Feb. 10, 1998 |
| 5597016 |
Mechanical lockout for pressure responsive downhole tool |
Jan. 28, 1997 |
| 5565063 |
Device and method for choking a stock suspension flow in a paper machine |
Oct. 15, 1996 |
| 5527433 |
Device and method for choking a stock suspension flow in a paper machine |
Jun. 18, 1996 |
| 5511416 |
Wide range laminar flow element |
Apr. 30, 1996 |
| 5495963 |
Valve for controlling pressure and flow |
Mar. 5, 1996 |
| 5451106 |
Extensional flow mixer |
Sep. 19, 1995 |
| 5390896 |
Energy loss device |
Feb. 21, 1995 |
| 5385305 |
Fuel injection nozzle |
Jan. 31, 1995 |
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