(0)G01L:0/2:
IPC6
SECTION G - PHYSICS
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,...
G01L
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G 01 L

 MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (methods or devices for measuring specially adapted for metal-rolling mills B 21 B 38/00; sensing pressure changes for compensating measurements of other variables or for compensating readings of instruments for variations in pressure, see G 01 D or other relevant subclasses for the variable measured; weighing G 01 G; converting a pattern of forces into electrical signals G 06 K 11/00) [4]
 

Note
 

Attention is drawn to the Notes following the title of class G 01.

 

 

 
 

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/ 00 Measuring force or stress, in general (measuring force due to impact G 01 L 5/00; measuring fluid pressure G 01 L 7/00 to G 01 L 27/00; measuring deformation of bodies as a result of stress by using gauges G 01 B) [4]

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/ 02 • by hydraulic or pneumatic means  

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/ 04 • by measuring elastic deformation of gauges, e.g. of springs  

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/ 06 • by measuring the permanent deformation of gauges, e.g. of compressed bodies  

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/ 08 • by the use of counterbalancing forces  

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/ 10 • by measuring variations of frequency of stressed vibrating elements, e.g. of stressed strings (using resistance strain gauges G 01 L 1/22)  

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/ 12 • by measuring variations in the magnetic properties of materials resulting from the application of stress  

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/ 14 • by measuring variations in capacitance or inductance of electrical elements, e.g. by measuring variations of frequency of electrical oscillators  

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/ 16 • using properties of piezo-electric devices  

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/ 18 • using properties of peizo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material (resistance strain gauges for measuring linear expansion or contraction G 01 B)  

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/ 20 • by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids (of piezo-resistive materials G 01 L 1/18); by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress  

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/ 22 • • using resistance strain gauges (resistance strain gauges for measuring linear expansion or contraction G 01 B)  

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/ 24 • by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis  

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/ 25 • using wave or particle radiation, e.g. X-rays, neutrons (G 01 L 1/24 takes precedence) [4]  

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/ 26 • Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload  
 

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/ 00 Measuring torque, work, mechanical power, or mechanical efficiency, in general

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/ 02 • Rotary-transmission dynamometers  

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/ 04 • • wherein the torque-transmitting element comprises a torsionally-flexible shaft  

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/ 06 • • • involving mechanical means for indicating  

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/ 08 • • • involving optical means for indicating  

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/ 10 • • • involving electric or magnetic means for indicating  

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/ 12 • • • • involving photoelectric means  

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/ 14 • • wherein the torque-transmitting element is other than a torsionally-flexible shaft  

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/ 16 • Rotary-absorption dynamometers, e.g. of brake type  

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/ 18 • • mechanically actuated  

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/ 20 • • fluid actuated  

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/ 22 • • electrically or magnetically actuated  

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/ 24 • Devices for determining the value of power, e.g. by measuring and simultaneously multiplying the values of torque and revolutions per unit of time, by multiplying the values of tractive or propulsive force and velocity (measuring velocity per se G 01 P)  

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/ 26 • Devices for measuring efficiency, i.e. the ratio of power output to power input  
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