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Class Information
Number: 73/861.75
Name: Measuring and testing > Volume or rate of flow > By measuring thrust or drag forces > On a vane > With rotation about a fixed axis
Description: Subject matter wherein the vane is mounted for rotation about a fixed axis and the angular displacement is a measure of the forces imparted.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7245230 |
Dual magnetic field sensor unit |
Jul. 17, 2007 |
| 7028561 |
Fuel dispenser fuel meter error detection device, system and method |
Apr. 18, 2006 |
| 7017425 |
Bucket wheel assembly for fluid flow meters |
Mar. 28, 2006 |
| 7001510 |
Siphon hose with gallon counter |
Feb. 21, 2006 |
| 6997064 |
Fluid metering and control device |
Feb. 14, 2006 |
| 6935191 |
Fuel dispenser fuel flow meter device, system and method |
Aug. 30, 2005 |
| 6889564 |
Peak flow meter |
May. 10, 2005 |
| 6881507 |
Method and apparatus for measuring the mass flow of hydrogen in a fuel cell |
Apr. 19, 2005 |
| 6604434 |
Method and apparatus for determining the direction and rate of a rotating element |
Aug. 12, 2003 |
| 6538433 |
Method and apparatus for non-contact measuring of metal bed parameters |
Mar. 25, 2003 |
| 6367336 |
Process mass flow apparatus and method for measuring the mass flow of powdered and granulated solids as well as the accumulated weight of material passed during a specified time |
Apr. 9, 2002 |
| 6032540 |
In-line, field adjustable irrigation flow indicator for high, normal and low flow rates |
Mar. 7, 2000 |
| 5945608 |
Hall effect fluid flow switch and flow meter |
Aug. 31, 1999 |
| 5932814 |
Photo detector bending beam flow switch and flow meter |
Aug. 3, 1999 |
| 5847288 |
Photo detector bending beam flow switch and flow meter |
Dec. 8, 1998 |
| 5787919 |
Pressure differential indicator with fire damper |
Aug. 4, 1998 |
| 5767419 |
Hall effect fluid flow switch and flow meter |
Jun. 16, 1998 |
| 5681999 |
Method and apparatus for measuring dry particles |
Oct. 28, 1997 |
| 5649449 |
Method and apparatus for determining the instantaneous operation conditions of a centrifugal pump |
Jul. 22, 1997 |
| 5589643 |
Across the wall pressure differential indicator |
Dec. 31, 1996 |
| 5581041 |
Apparatus for measuring flow of granular particles in conduit |
Dec. 3, 1996 |
| 5456121 |
Pivotable vane flowmeter with capacitive position sensor |
Oct. 10, 1995 |
| 5445034 |
Method of measuring the pressure of a gas in a gas accumulator, and a gas accumulator for carrying out the method |
Aug. 29, 1995 |
| 5413112 |
Expiratory flow measuring device |
May. 9, 1995 |
| 5406979 |
Valve and sensor arrangement |
Apr. 18, 1995 |
| 5383470 |
Portable spirometer |
Jan. 24, 1995 |
| 5381698 |
Flow-responsive apparatus |
Jan. 17, 1995 |
| 5379650 |
Differential pressure sensor for respiratory monitoring |
Jan. 10, 1995 |
| 5343743 |
Asymmetrical displacement flowmeter |
Sep. 6, 1994 |
| 5323645 |
Device to investigate the flow movement in cylindrical components |
Jun. 28, 1994 |
| 5277195 |
Portable spirometer |
Jan. 11, 1994 |
| 5233867 |
Lever-operated dynamic fluid flow sensing system |
Aug. 10, 1993 |
| 5189918 |
"Null" flow sensor |
Mar. 2, 1993 |
| 5103757 |
Self cleaning device for sight flow indicators |
Apr. 14, 1992 |
| 5091612 |
Magnetically actuated proximity flow switch |
Feb. 25, 1992 |
| 5063775 |
Method and system for controlling a mechanical pump to monitor and optimize both reservoir and equipment performance |
Nov. 12, 1991 |
| 5056373 |
Flow responsive transmitter and indicator |
Oct. 15, 1991 |
| RE33649 |
Butterfly valve having a function for measuring a flow rate and method of measuring a flow rate with a butterfly valve |
Jul. 30, 1991 |
| 4926903 |
Butterfly valve having a function for measuring a flow rate and method of measuring a flow rate with a butterfly valve |
May. 22, 1990 |
| 4911022 |
Flowmeter with a fluid dynamic target |
Mar. 27, 1990 |
| 4906807 |
Apparatus for monitoring the flow of fluid media in a pipeline |
Mar. 6, 1990 |
| 4782333 |
Water-flow detector with rapid switching |
Nov. 1, 1988 |
| 4777830 |
Flowmeter with pivotably floating fluid dynamic target |
Oct. 18, 1988 |
| 4615303 |
Fluid flow failure detection means |
Oct. 7, 1986 |
| 4561309 |
Method and apparatus for determining pressure differentials |
Dec. 31, 1985 |
| 4526042 |
Air flow measuring apparatus |
Jul. 2, 1985 |
| 4470292 |
Shot peening intensity detector |
Sep. 11, 1984 |
| 4428242 |
Flowmeter using twisting torque |
Jan. 31, 1984 |
| 4405882 |
Air flow sensor |
Sep. 20, 1983 |
| 4389887 |
Wind velocity gage for sailboats |
Jun. 28, 1983 |
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