IPC Definitions - January 01, 2012
G01L - Definition
This subclass covers:
Apparatus or methods for measuring force, stress, torque or the like, and particularly:
Apparatus or methods for measuring fluid pressure, and particularly:
Apparatus or methods for measuring, indicating or recording:
Vacuum gauges.
Testing or calibrating of the apparatus as described.
Details or accessories of the apparatus as described.
Relationship between large subject matter areas
For subject matter relating to sensing pressure changes for compensating measurements of other variables or for compensating readings of instruments for variations in pressure, see subclass G01D or other relevant subclasses for the variable measured.
References relevant to classification in this subclass
This subclass does not cover:
Weighing | G01G |
Measuring blood pressure for diagnostic purposes | A61B 5/02 |
Measuring fluid pressure within the human body other than blood pressure for diagnostic purposes | A61B 5/03 |
Measuring muscular strength or the force of a muscular blow for diagnostic purposes | A61B 5/22 |
Measuring tension, compression or roll-force specially adapted for metal-rolling mills | B21B 38/06, B21B 38/08 |
Devices for measuring, signalling, controlling, or distributing tyre pressure specially adapted for being mounted on vehicles | B60C 23/00 |
Applications of tensometers to sewing machine elements | D05B 47/06 |
Measuring pressure in boreholes or wells | E21B 47/06 |
Levelling between separate points or surveyors' levels by using barometric means | G01C 5/06 |
Measuring volume flow, mass flow or volume of fluid by measuring pressure or differential pressure | G01F 1/34, G01F 1/88, G01F 22/02 |
Measuring or indicating level of liquid or fluent material by measurement of pressure | G01F 23/14 |
Weighing apparatus wherein the balancing is effected by fluid action, with means for measuring the pressure imposed by the load on a liquid | G01G 5/04 |
Testing of engines by monitoring pressure in cylinders or fluid ducts | G01M 15/08-G01M 15/09 |
Meteorology | G01W 1/00 |
Converting a pattern of forces into electrical signals | G06K 11/00 |
Attention is drawn to the following places, which may be of interest for search:
Torque indicators in wrenches or screwdrivers | B25B 23/14 |
Application of tension indicators for adjusting or controlling tension in filamentary material | B65H 59/40 |
Tyre-inflating valves | B60C 29/00 |
Supplying air for tyre inflation | B60S 5/04 |
Devices for indicating tension in warp or cloth | D03D 49/18 |
Indicating lubricant pressure in machines | F01M 1/20 |
Indicating coolant pressure in machines or engines | F01P 11/18 |
Special adaptations of indicating, measuring, or monitoring equipment for the filling or discharging of vessels | F17C 13/02 |
Embedding pads or other sensitive devices in paving or other road surfaces | E01F 11/00 |
Measuring the deformation in a solid by mechanical strain gauges | G01B 5/30 |
Measuring the deformation in a solid by resistance strain gauges | G01B 7/16 |
Measuring the deformation in a solid by optical strain gauges | G01B 11/16 |
Measurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves | G01H |
Testing steering behaviour of vehicles | G01M 17/06 |
Investigating strength properties of solid materials by application of mechanical stress | G01N 3/00 |
Devices characterised by the determination of the variation of atmospheric pressure with height to measure the vertical components of speed | G01P 3/62 |
Scanning-probe techniques using atomic force microscopy | G01Q |
Hollow bodies deformable or displaceable under pressure, e.g. Bourdon tubes, bellows | G12B 1/04 |
Switches operated by change of fluid pressure | H01H 35/24 |
Controllable semiconductor devices by variation of applied mechanical force, e.g. of pressure | H01L 29/84 |
Dynamo-electric clutches; Dynamo-electric brakes | H02K 49/00 |