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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 |
| 4496309 |
Liquid gas-operated lighter, particularly pocket lighter |
Jan. 29, 1985 |
| 4487392 |
Radiator vent valve |
Dec. 11, 1984 |
| 4487510 |
Mixing apparatus |
Dec. 11, 1984 |
| 4482035 |
Shock absorber |
Nov. 13, 1984 |
| 4480729 |
Anti-surge valve for hydraulic locking device |
Nov. 6, 1984 |
| 4473210 |
Labyrinth trim valve |
Sep. 25, 1984 |
| 4452436 |
Single tube strut shock absorber |
Jun. 5, 1984 |
| 4439376 |
Flow proportioning device |
Mar. 27, 1984 |
| 4425939 |
Valve for adjusting the closing speed of a door closer |
Jan. 17, 1984 |
| 4424952 |
Metering unit |
Jan. 10, 1984 |
| 4408892 |
Apparatus for increasing the homogeneity of a fluid flow in a pipe |
Oct. 11, 1983 |
| 4407327 |
Flow control valve |
Oct. 4, 1983 |
| 4398563 |
Multi-tube flow restrictor |
Aug. 16, 1983 |
| 4391430 |
Hydraulic servo control spool valve |
Jul. 5, 1983 |
| 4383552 |
Adjustable choke |
May. 17, 1983 |
| 4375939 |
Capacity-prewhirl control mechanism |
Mar. 8, 1983 |
| 4364523 |
Flow control technique |
Dec. 21, 1982 |
| RE31105 |
Controlled pressure drop valve |
Dec. 21, 1982 |
| 4360040 |
Multiple orifice valves |
Nov. 23, 1982 |
| 4356843 |
Lamellate fluid resistance device |
Nov. 2, 1982 |
| 4344459 |
Flow control device employing elastomeric element |
Aug. 17, 1982 |
| 4332549 |
Gas pressure regulator for lighters |
Jun. 1, 1982 |
| 4315431 |
Adjustable flow divider for mass flowmeters |
Feb. 16, 1982 |
| 4300552 |
Apparatus for controlling the flow of intravenous fluid to a patient |
Nov. 17, 1981 |
| 4295493 |
Drag ball valve including variable pressure reducing means |
Oct. 20, 1981 |
| 4291860 |
Solenoid valves, particularly for carburetors |
Sep. 29, 1981 |
| 4279274 |
Fluid control device with disc-type flow restrictor |
Jul. 21, 1981 |
| 4278234 |
Minute flow regulating valve |
Jul. 14, 1981 |
| 4275767 |
Fluid resistor |
Jun. 30, 1981 |
| 4258750 |
Labyrinth trim valve |
Mar. 31, 1981 |
| 4256284 |
High energy loss fluid flow control device |
Mar. 17, 1981 |
| 4249574 |
Orifice trim and backpressure plate for high pressure valves |
Feb. 10, 1981 |
| 4220173 |
Time delay fluid valve |
Sep. 2, 1980 |
| 4209133 |
Drip level irrigation emitter unit |
Jun. 24, 1980 |
| 4206901 |
Pressure-actuated valve with metering choke |
Jun. 10, 1980 |
| 4196753 |
Flow regulator |
Apr. 8, 1980 |
| 4182356 |
Sill cock assembly |
Jan. 8, 1980 |
| 4176683 |
Flow regulator |
Dec. 4, 1979 |
| 4165764 |
Valve |
Aug. 28, 1979 |
| 4152030 |
Brake with anti-locking and reapplication control and method |
May. 1, 1979 |
| 4139985 |
Hydrostatic transmission control with hydraulic follow-up |
Feb. 20, 1979 |
| 4109683 |
Throttle valve |
Aug. 29, 1978 |
| 4106525 |
Fluid pressure control |
Aug. 15, 1978 |
| 4105048 |
High energy loss device |
Aug. 8, 1978 |
| 4105162 |
Regulated flow-reducing device particularly useful for drip irrigation |
Aug. 8, 1978 |
| 4079750 |
Vacuum delay valve |
Mar. 21, 1978 |
| 4069843 |
Clutch cylinder circuit and charging valve therefor |
Jan. 24, 1978 |
| 4060099 |
Controlled pressure drop valve |
Nov. 29, 1977 |
| 4044992 |
High energy loss fluid flow control device |
Aug. 30, 1977 |
| 4044991 |
High energy loss fluid flow control device |
Aug. 30, 1977 |
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