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Class Information
Number: 251/127
Name: Valves and valve actuation > With material guide or restrictor > Baffle or zigzag flow restrictor
Description: Subject matter wherein the restricting means is of a form such that the fluid flow direction is changed at least twice in a plurality of stages.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4889163 |
Valve assembly |
Dec. 26, 1989 |
| 4887769 |
Electromagnetic fuel injection valve |
Dec. 19, 1989 |
| 4879976 |
Reed valve mechanism for engines |
Nov. 14, 1989 |
| 4862995 |
Oil discharge diffuser |
Sep. 5, 1989 |
| 4860993 |
Valve design to reduce cavitation and noise |
Aug. 29, 1989 |
| 4854347 |
Faucet valve with noise reducing slots and blades in preclosing apertures |
Aug. 8, 1989 |
| 4838304 |
Compact cartridge for a single handle faucet valve |
Jun. 13, 1989 |
| 4836498 |
Liquid flow control assembly |
Jun. 6, 1989 |
| 4828219 |
Metal diaphragm valve |
May. 9, 1989 |
| 4802621 |
Thermal modulating control valve |
Feb. 7, 1989 |
| 4774984 |
Low-noise plug valve |
Oct. 4, 1988 |
| 4762146 |
Flow control valve |
Aug. 9, 1988 |
| 4756334 |
Check-valve assembly, in particular for a pressurized water reactor |
Jul. 12, 1988 |
| 4739795 |
Flow control valve |
Apr. 26, 1988 |
| 4726563 |
Low frequency noise and turbulence reducer |
Feb. 23, 1988 |
| 4715395 |
Fluid flow regulator |
Dec. 29, 1987 |
| 4693450 |
Low-noise control valve |
Sep. 15, 1987 |
| 4691894 |
Valve |
Sep. 8, 1987 |
| 4679592 |
Valve seat design to reduce cavitation |
Jul. 14, 1987 |
| 4671321 |
Control organ for gaseous and liquid media |
Jun. 9, 1987 |
| 4665946 |
Rotary control valves with pressure-reducing means |
May. 19, 1987 |
| 4634095 |
Multiple stage choke valve |
Jan. 6, 1987 |
| 4632142 |
Ballcock assembly |
Dec. 30, 1986 |
| 4617963 |
Control valve with anticavitation trim |
Oct. 21, 1986 |
| 4610273 |
Attenuated rotating valve |
Sep. 9, 1986 |
| 4607819 |
High pressure radial flow valve |
Aug. 26, 1986 |
| RE32197 |
High energy loss fluid control |
Jul. 8, 1986 |
| 4596376 |
Mixer valve with hard material plaques, provided with prethrottling means |
Jun. 24, 1986 |
| 4574826 |
Adjustable vacuum breaker fill valve |
Mar. 11, 1986 |
| 4567915 |
Anti-cavitation low-noise control valve cage trim for high pressure reducing service in liquid or gaseous flow |
Feb. 4, 1986 |
| 4565212 |
Device for the step-wise pressure release on the expansion of, in particular hot, gases |
Jan. 21, 1986 |
| 4562859 |
Ballcock assembly |
Jan. 7, 1986 |
| 4549718 |
Low noise valve |
Oct. 29, 1985 |
| 4540025 |
Throttling ball valve |
Sep. 10, 1985 |
| 4530375 |
Attenuating rotating valve |
Jul. 23, 1985 |
| 4520844 |
Regulator valve for stabilizing volume flow, especially in ventilation systems |
Jun. 4, 1985 |
| 4519574 |
Auxiliary controlled valve disposed in a drilling string |
May. 28, 1985 |
| 4509550 |
Water temperature display and flow control apparatus |
Apr. 9, 1985 |
| 4504040 |
Multiple stage valve |
Mar. 12, 1985 |
| 4494731 |
Valve having a movable interface isolating an actuating mechanism |
Jan. 22, 1985 |
| 4484597 |
Homogenizer device, in particular for the production of whipped cream |
Nov. 27, 1984 |
| 4479510 |
Attenuating rotating valve having varying configurations |
Oct. 30, 1984 |
| 4473210 |
Labyrinth trim valve |
Sep. 25, 1984 |
| 4456033 |
Perforated sheet stock flow restrictor |
Jun. 26, 1984 |
| 4449242 |
Flexible, resilient anti-contamination baffle |
May. 15, 1984 |
| 4441686 |
Electrohydraulic pressure-regulating valve |
Apr. 10, 1984 |
| 4429714 |
Control valve |
Feb. 7, 1984 |
| 4418719 |
Air control apparatus |
Dec. 6, 1983 |
| 4418717 |
Modular pressure letdown valve |
Dec. 6, 1983 |
| 4418722 |
Pressure letdown method and device for coal conversion systems |
Dec. 6, 1983 |
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