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Class Information
Number: 73/1.26
Name: Measuring and testing > Instrument proving or calibrating > Volume of flow, speed of flow, volume rate of flow, or mass rate of flow > Orifice or restriction > Nozzle or venturi
Description: Subject matter wherein the proving or calibrating apparatus or the device being proven or calibrated comprises (a) a tube having a taper or a constriction through which the fluent material passes or (b) a means having flared ends connected by a constricted middle through which the fluent material passes.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7555928 |
Exhaust volume measurement device |
Jul. 7, 2009 |
| 7552614 |
System and method for determining functionality or accuracy of a sensor |
Jun. 30, 2009 |
| 7469570 |
Calibrating system for measuring sprayed materials |
Dec. 30, 2008 |
| 7461537 |
Device and method for calibration of a mass flow sensor |
Dec. 9, 2008 |
| 7249486 |
Method for monitoring a sensor |
Jul. 31, 2007 |
| 7089789 |
System for calibrating an integrated injection nozzle and injection pump |
Aug. 15, 2006 |
| 6698270 |
Quality control systems for detecting leaks of gaseous or liquid materials from closed containers |
Mar. 2, 2004 |
| 6470281 |
Method and apparatus for measuring a throttle point |
Oct. 22, 2002 |
| 5663487 |
Capillary tube determining the leakage rate for a test leak |
Sep. 2, 1997 |
| 5442957 |
Calibration technique for production mass air flow sensor flow stands |
Aug. 22, 1995 |
| 5307667 |
Response time test apparatus for a mass air flow sensor |
May. 3, 1994 |
| 5299447 |
Air flow manifold system for providing two different mass air flow rates to a mass air flow sensor production calibration station |
Apr. 5, 1994 |
| 5267467 |
Mass air flow sensor two temperature production line test apparatus |
Dec. 7, 1993 |
| 4896539 |
Spray calibration device and method |
Jan. 30, 1990 |
| 4823591 |
Calibration method for exhaust mass flow measuring system |
Apr. 25, 1989 |
| 4821557 |
Method and apparatus for determining the accuracy of a gas flow meter |
Apr. 18, 1989 |
| 4753095 |
Method for determining real gas effects in critical flow nozzles |
Jun. 28, 1988 |
| 4723437 |
Sprayer and nozzle calibrator |
Feb. 9, 1988 |
| 4706492 |
Method and apparatus for determining real gas effects in critical flow nozzles |
Nov. 17, 1987 |
| 4645174 |
Mounting arrangement for a critical flow device |
Feb. 24, 1987 |
| 4590790 |
Method for determining the accuracy of a gas measurement instrument |
May. 27, 1986 |
| 4569227 |
Test station for fuel injection pump |
Feb. 11, 1986 |
| 4509371 |
Venturi flow measuring device and method |
Apr. 9, 1985 |
| 4343177 |
Flow compensated gas comparison probe |
Aug. 10, 1982 |
| 4264961 |
Air flow rate measuring apparatus |
Apr. 28, 1981 |
| 4254653 |
Electromagnetic fuel injector calibration |
Mar. 10, 1981 |
| 4194386 |
Variable area metering tube and method of manufacture |
Mar. 25, 1980 |
| 4184367 |
Nipple flow rate tester |
Jan. 22, 1980 |
| 4063449 |
Air gauge for nozzle assemblies |
Dec. 20, 1977 |
| 4027523 |
Methods and apparatus for proof testing gas meters |
Jun. 7, 1977 |
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