Patents for G01L 1 - Measuring force or stress, in general (22,371)
12/1991
12/04/1991EP0459948A2 Receiver-combination for force, elongation and sound conducted through solids
12/04/1991EP0459947A2 Bar tension measuring system in for example injection moulding machines
12/04/1991EP0459069A1 Intermediate layer force sensor with parallel connected disc sensor elements and integrated amplifiers
12/03/1991CA1292777C Comb filter pressure temperature sensor
11/1991
11/28/1991DE4015666A1 Protecting expansion strips used to monitor force in recording arm - by coating with layer which stops condensed air from corroding the strips
11/27/1991EP0458491A2 A non-reversing load detector for a reciprocating element
11/27/1991CN1056491A New n-acylated arylpyrroles useful as insecticidal, acaricidal, nematicidal and molluscicidal agents
11/26/1991US5068638 Electrical sensing element
11/26/1991US5068635 Stress sensor having deformable ceramic hollow member
11/26/1991US5067815 Optical sensor with intermodal interferometry
11/21/1991EP0259494B1 Weight-detecting device
11/20/1991CN1014829B Magnetoelastic torque transducer
11/20/1991CN1014828B Optical carrier-phase shift method for testing direction of principal stress
11/14/1991WO1991017415A1 Process and device for the manufacture of a pressure force sensor
11/14/1991WO1991017414A2 Non-destructive structural evaluation
11/14/1991DE4015294A1 Inductive force sensor esp. for aircraft undercarriage - has measurement tongue movable along axis of two sensor coils
11/14/1991DE4014511A1 Pressure sensor mfg. method - compressing film arrangement contg. thick film resistor with plastic compression mass after preparation of sensor surface
11/13/1991EP0456168A2 Device for the analogue-digital conversion of a measured quantity, generated by transducers disposed in a bridge circuit, in particular by gauges in a weighing cell
11/13/1991EP0455627A1 Apparatus and method for determining stress and strain in pipes, pressure vessels, structural members and other deformable bodies
11/13/1991CN2088686U High precision strain pressure sensor
11/12/1991US5065331 Apparatus and method for determining the stress and strain in pipes, pressure vessels, structural members and other deformable bodies
11/06/1991EP0454901A1 Force sensor
10/1991
10/31/1991WO1991013832A3 Method and apparatus for measuring strain
10/31/1991WO1991012160A3 Controlling braking forces in tractor-trailer combinations
10/30/1991EP0453703A2 Apparatus for measuring tire tread force and motion
10/30/1991CN2087781U Full-weighing section track type weighing and force-measuring transducer
10/29/1991US5061847 Force/pressure detection device utilizing a monomode optical fiber
10/29/1991US5060965 Trailer coupling with force sensing means
10/29/1991US5060527 Tactile sensing transducer
10/29/1991US5060526 Laminated semiconductor sensor with vibrating element
10/29/1991US5060525 Resilient connecting device, in particular with incorporated force-measuring device and process for manufacturing it
10/23/1991CN1014451B Method and apparatus for simulation of the operational demands on a connection between components
10/22/1991US5058435 Single diaphragm transducer with multiple sensing elements
10/16/1991EP0451992A2 Detection of vibrations of a microbeam through a shell
10/16/1991EP0451636A1 Foil strain gauge and transducer for using it
10/16/1991CN2086900U Sensor for double-range dynamometer
10/16/1991CN2086899U Miniature digital dynamometer
10/15/1991CA1290592C Strain-gauge sensor for measuring forces
10/15/1991CA1290589C Sensing strain and temperature
10/10/1991DE4109427A1 Force measurement plate e.g. in or between machine parts - has annular body and force input element connected by annular membranes to form hydraulic medium chamber
10/08/1991US5055838 Silicon tactile imaging array and method of making same
10/08/1991US5054323 Pressure distribution characterization system
10/01/1991US5053692 Temperature dependent power supply for use with a bridge transducer
10/01/1991US5052505 Load cell
10/01/1991US5052232 Magnetoelastic torque transducer
09/1991
09/26/1991DE4009286A1 Strain gauge for measuring torsion of rod-shaped body - has gauge mounted on flat membrane attached to edge of deformation section which gives torsional strain as measure of resistance
09/26/1991DE4009019A1 Circular plate spring for force measurement cell - has integral and external mounted on strain gauges strain free circle and elasticity reduction recess near centre
09/24/1991CA1289576C Weight detecting apparatus with electrodes detecting changes in electrostatic capacity
09/19/1991WO1991011695A3 Measurement of deformation
09/19/1991WO1991010347A3 Method for mounting a machine part comprising a sensitive element which defines, with a support, a variable capacitor
09/18/1991EP0447279A2 Devices for measuring charges
09/18/1991CN2085060U Manually hydraulic rock ergograph
09/18/1991CN1013997B Micro-electric measuring type non-destructive measuring method of residual stress
09/18/1991CN1013980B Directional earth-filling method and apparatus for the deep-hole installation of a sensor
09/17/1991US5049232 Lamination, alignment, cutting
09/17/1991US5048346 Method of estimating the thermal stress of a heat-resistant member by testing a model of the member made of a different material
09/17/1991US5048344 Borehole strain monitor for soft rock
09/17/1991US5048343 Temperature-compensated strain-gauge amplifier
09/12/1991DE4007610A1 Measuring or monitoring appts for parts subjected to force - applies expansion measuring strips primed by voltage and with associated signal processing and evaluating circuit
09/11/1991CN1054485A Electrostatically driven dual vibrating beam force transducer
09/10/1991US5047717 Method and apparatus for measuring internal mechanical stress of a ferromagnetic body by determining the third harmonic of the induction
09/05/1991WO1991013329A1 Pressure sensor
09/05/1991WO1991013327A1 Displacement detector, especially displacement to frequency transducer for measuring pressure
09/05/1991WO1991012953A1 Method and apparatus for structural actuation and sensing in a desired direction
09/05/1991CA2011467A1 Method of investigating the gait of a living being
09/04/1991WO1991013832A2 Method and apparatus for measuring strain
09/04/1991CN2084194U Micro-pressure amplifer for diffusion' silicon force sensitive sensor
09/04/1991CA2077085A1 Method and apparatus for measuring strain
09/03/1991US5045827 Low-force transducer
09/03/1991US5044205 Method for monitoring deformations with light waveguides
08/1991
08/28/1991EP0443714A2 A method and apparatus for processing electrical signals and a stress wave sensor
08/28/1991EP0443334A1 Arrangement for securing a ribbon-like measuring body
08/28/1991CN1013711B Piezomagnetic tester for directly indicating absolute stress of concrete
08/27/1991WO1991013328A1 Vibrating beam transducer drive system
08/27/1991US5042307 Amplifying compensation circuit for semiconductor
08/27/1991CA2053878A1 Vibrating beam transducer drive system
08/27/1991CA1288172C Method for fabricating a silicon force transducer
08/22/1991WO1991012545A1 Method for producing an index lattice in an optical fibre, and a quasi-distributed sensor array formed therein
08/22/1991WO1991012160A2 Controlling braking forces in tractor-trailer combinations
08/22/1991DE4017981A1 Arrangement for holding mechanism force sensor - has mandrels with recesses accepting blocking pins and band loops
08/21/1991EP0442536A2 Atomic force sensor head for measuring the properties of a data store
08/21/1991EP0442329A1 Sliding contact mechanical/electrical displacement transducer
08/21/1991EP0442280A2 Method and apparatus for semiconductor chip transducer
08/21/1991EP0442015A1 Variable resistor utilizing extension type conductive rubber
08/21/1991EP0441898A1 Optical sensing apparatus and method.
08/14/1991EP0441693A1 Method for making an index grating in an optical fibre, and quasi-distributed sensor network realized in this fibre
08/14/1991EP0441549A1 Matched pair of sensor and amplifier circuits
08/14/1991EP0441324A1 Semiconductor sensor
08/14/1991EP0441145A2 Ultrasonic load indicating member
08/14/1991EP0441050A2 Method for sensing temperature, pressure and liquid level, and variable ratio fiber optic coupler sensors therefor
08/13/1991CA2035654A1 Sliding contact mechanical/electrical displacement transducer
08/08/1991WO1991011695A2 Measurement of deformation
08/08/1991WO1991011351A1 A capacitive force transducer
08/08/1991DE4003552A1 Contact force measurement of connector contact spring arms - using piezoelectric film between two hard metal elements for rapid, direct measurement
08/08/1991DE4003048A1 Diaphragm force or pressure transducer
08/08/1991DE4002910A1 Silicone oil- or gel-filled force measurement device - allows attitude change between rigid piston and housing for uniform pressure loading of strain-gauge diaphragm
08/07/1991EP0440268A2 Atomic force sensor head with interferometric measurement of the properties of a data store
08/07/1991EP0440012A1 Force measuring device
08/07/1991EP0440011A2 Force and/or measuring device
08/06/1991US5036715 Cantilevered force sensing assembly utilizing one or two resonating force sensing devices