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Class Information
Number: 73/861.71
Name: Measuring and testing > Volume or rate of flow > By measuring thrust or drag forces
Description: Subject matter responsive to the magnitude of forces imparted by the fluid to (a) an object placed in the flow path or (b) a conduit segment.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7340967 |
Device for measuring a mass flow rate of a particulate material |
Mar. 11, 2008 |
| 7313973 |
Flow sensor and fire detection system utilizing same |
Jan. 1, 2008 |
| 7168330 |
Multi-parametric media transducer |
Jan. 30, 2007 |
| 7017425 |
Bucket wheel assembly for fluid flow meters |
Mar. 28, 2006 |
| 7004038 |
Fiber optic flow meter |
Feb. 28, 2006 |
| 6681645 |
Moving target flow meter |
Jan. 27, 2004 |
| 6631648 |
Microfluidic flow sensing method and apparatus |
Oct. 14, 2003 |
| 6591697 |
Method for determining pump flow rates using motor torque measurements |
Jul. 15, 2003 |
| 6584863 |
Device for measuring fluid flow through a pipe or open channel |
Jul. 1, 2003 |
| 6435040 |
Inertial flow sensor and method |
Aug. 20, 2002 |
| 6345540 |
Fluid flow meter |
Feb. 12, 2002 |
| 6295810 |
Hydrostatic drive system |
Oct. 2, 2001 |
| 6256986 |
Hydrostatic drive system |
Jul. 10, 2001 |
| 6253625 |
Target flow meters with immersed strain gauges |
Jul. 3, 2001 |
| 6239446 |
Fluid flow detector |
May. 29, 2001 |
| 6212958 |
Flow sensing assembly and method |
Apr. 10, 2001 |
| 6055869 |
Lift force fluid flow sensor for measuring fluid flow velocities |
May. 2, 2000 |
| 6009762 |
Fluid flow detector |
Jan. 4, 2000 |
| 5970802 |
Relating to mass flow measuring apparatuses |
Oct. 26, 1999 |
| 5959218 |
Method and device for measuring the flow of bulk materials |
Sep. 28, 1999 |
| 5945608 |
Hall effect fluid flow switch and flow meter |
Aug. 31, 1999 |
| 5663508 |
Silicon flow sensor |
Sep. 2, 1997 |
| 5526695 |
Pulsed flow meter |
Jun. 18, 1996 |
| 5513526 |
Hydrofoil force balance |
May. 7, 1996 |
| 5483840 |
System for measuring flow |
Jan. 16, 1996 |
| 5402680 |
Velocity sensor and semiconductor exposing apparatus using such a sensor |
Apr. 4, 1995 |
| 5271408 |
Hydrodynamic system for blood flow measurement |
Dec. 21, 1993 |
| 5176018 |
Shot sensing shot peening system and method having a capacitance based densitometer |
Jan. 5, 1993 |
| 5174161 |
Wireline and coiled tubing retrievable choke for downhole flow measurement |
Dec. 29, 1992 |
| 5120951 |
Optoelectronic motion and fluid flow sensor with resilient member deflected by fluid flow |
Jun. 9, 1992 |
| 5056373 |
Flow responsive transmitter and indicator |
Oct. 15, 1991 |
| 5033311 |
Volumetric fluid flow sensor |
Jul. 23, 1991 |
| 4955270 |
Dry flow sensor |
Sep. 11, 1990 |
| 4947691 |
High pressure shower gauge for papermaking machine |
Aug. 14, 1990 |
| 4938078 |
Method and apparatus for measuring flow rate |
Jul. 3, 1990 |
| 4873872 |
Float for fluid measurements |
Oct. 17, 1989 |
| 4848123 |
Shot peening mass flow and velocity sensing system and method |
Jul. 18, 1989 |
| 4831886 |
Flow indicator |
May. 23, 1989 |
| 4788869 |
Apparatus for measuring fluid flow |
Dec. 6, 1988 |
| 4781070 |
Flow meter |
Nov. 1, 1988 |
| 4779762 |
Method and apparatus for controlling the gas content of dispensed hot melt thermoplastic adhesive foam |
Oct. 25, 1988 |
| 4777830 |
Flowmeter with pivotably floating fluid dynamic target |
Oct. 18, 1988 |
| 4648278 |
Spiral coil target flow meter |
Mar. 10, 1987 |
| 4644803 |
Force measurement apparatus and method |
Feb. 24, 1987 |
| 4631959 |
Drag anemometer |
Dec. 30, 1986 |
| 4620448 |
Arrangement for measuring the rate of flow of a gaseous or liquid medium through a housing |
Nov. 4, 1986 |
| 4573361 |
Float-type flowmeter |
Mar. 4, 1986 |
| 4569233 |
Flow meter indicating device |
Feb. 11, 1986 |
| 4503712 |
Mass flowmeter |
Mar. 12, 1985 |
| 4481830 |
Apparatus for measuring fluid flow |
Nov. 13, 1984 |
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