| Patents for G01N 3 - Investigating strength properties of solid materials by application of mechanical stress (30,941) |
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| 05/12/1981 | US4266424 Apparatus for determining the stress-strain properties of viscoelastic materials in the molten state |
| 05/06/1981 | EP0028101A2 A hardness tester |
| 05/05/1981 | CA1100620A1 Digital output force sensor using surface acoustic waves |
| 04/28/1981 | US4263807 Gun barrel stress simulator |
| 04/22/1981 | EP0027257A1 Method and apparatus for impact testing of bend specimen |
| 04/21/1981 | US4262525 Hardness testing apparatus provided with a safety stop device |
| 04/14/1981 | US4261587 Mechanical chucking device |
| 04/07/1981 | US4260986 Tool wear detecting system for a numerically controlled machine tool |
| 03/31/1981 | CA1098623A1 Method and apparatus for determining rotor life expended |
| 03/25/1981 | EP0025646A1 Method and apparatus for proof testing glass fibres |
| 03/24/1981 | US4257265 Self-stressed mode 1 fracture mechanics test piece |
| 03/17/1981 | US4255989 Converting rotary motion into variable-amplitude reciprocation |
| 03/17/1981 | US4255978 Torsional vibration monitoring apparatus for a rotating shaft system |
| 03/17/1981 | US4255966 Hardness testing apparatus |
| 03/11/1981 | EP0024759A1 Calibrating unit for calibrating a hydraulic or electrical pressure gauge, especially of a probing device |
| 03/10/1981 | US4255049 Non-destructive testing of structural elements for fatigue by measurement of specular reflectance |
| 03/10/1981 | US4254655 Hydraulic fill valve |
| 03/03/1981 | US4253913 Measuring loss of a test material in contact with web during rolling |
| 02/24/1981 | US4252027 Method of determining the plating properties of a plating bath |
| 02/17/1981 | US4250742 Method and apparatus for testing hardness of homogeneous materials |
| 02/17/1981 | CA1095739A1 Method of and device for measuring the pressure and abrasion sensitivity of granular material (grain lots) due to mechanical stress |
| 02/11/1981 | EP0023643A1 Method of and apparatus for contactless photoelectric measuring of extension processes |
| 02/10/1981 | US4249424 Variable throw eccentric |
| 02/10/1981 | US4249414 Apparatus for testing hardness of wooden poles |
| 02/03/1981 | US4248097 Torsion shear apparatus |
| 02/03/1981 | US4248096 Machine for fatigue testing of materials |
| 01/28/1981 | EP0023167A1 Method and apparatus for the dynamic testing of piles |
| 01/27/1981 | US4246777 Test device for containers |
| 01/20/1981 | US4245512 Fabric stretch testing device |
| 01/20/1981 | US4245496 Portable material hardness tester |
| 01/14/1981 | EP0022325A1 Method and apparatus for applying torque to a rotating structure and use of said method and apparatus |
| 01/13/1981 | CA1093339A1 Hardness testing device |
| 01/07/1981 | EP0021083A1 Method and apparatus for measuring cigarette rod firmness during pyrolysis smoking |
| 01/07/1981 | EP0020852A1 Device for investigating the stress corrosion cracking tendency of materials |
| 01/07/1981 | EP0020341A1 Apparatus and method for indicating stress in an object |
| 12/23/1980 | US4240291 Flow meter |
| 12/16/1980 | CA1091506A1 Apparatus for testing a forms set for print through quality |
| 12/09/1980 | US4237723 Control means for a pipe tester |
| 12/09/1980 | US4237719 Apparatus for testing power transmission belts |
| 12/02/1980 | US4236413 Testing apparatus for tablet-shaped specimens |
| 12/02/1980 | US4236402 Method and apparatus for testing rock tenacity |
| 11/25/1980 | US4235114 Material testing device |
| 11/11/1980 | US4232559 Method and an apparatus for measuring the bonding power of an adhesive material |
| 11/11/1980 | US4232446 Gage for measuring decrease in dimension of test specimen in tensile test |
| 11/04/1980 | US4231273 Apparatus for perforating a paper sample |
| 11/04/1980 | US4231248 Laser tensile test sample holder |
| 11/04/1980 | US4231145 Method and apparatus for attaching two objects |
| 11/04/1980 | CA1089079A1 Method for testing filled glass containers |
| 11/04/1980 | CA1088780A1 Non-destructive refractory erosion indicator |
| 11/04/1980 | CA1088775A1 Apparatus for testing the burst strength of a line of perforations |
| 11/04/1980 | CA1088774A1 Penetration hardness tester with digital readout |
| 10/29/1980 | EP0017683A1 Testing of shipping containers |
| 10/28/1980 | US4229970 Method and apparatus for measuring the rheological properties of an extrudable material |
| 10/14/1980 | US4228514 Method and system for determining the wear of a drill bit in real time |
| 10/14/1980 | US4227400 Measuring cigarette characteristics during pyrolysis smoking |
| 10/01/1980 | EP0016639A1 Method and apparatus for determining the abrasiveness of fluids, method of monitoring bearing wear using such method, and machine incorporating such apparatus |
| 10/01/1980 | EP0016205A1 Method of determining the fatigue threshold value of a material |
| 09/30/1980 | US4224849 Device for detection of metal in a moved strand |
| 09/16/1980 | US4222262 Hardness testing apparatus |
| 09/02/1980 | US4220995 Apparatus for detecting tip damages of a milling cutter |
| 09/02/1980 | CA1084733A1 Control means for a pipe tester |
| 08/26/1980 | CA1084619A1 Apparatus for measuring the mechanical characteristics of a material such as skin |
| 08/26/1980 | CA1084301A1 Apparatus for pressure testing frangible containers |
| 08/19/1980 | US4217912 Device for determination of the mechanical characteristic frequency of blood vessels, tendons, bones or similar organs in a body |
| 08/12/1980 | CA1083433A1 Apparatus for pressure testing of containers |
| 07/23/1980 | EP0013599A1 Partially stabilized zirconia ceramics; method of making said ceramics, dies constructed of said ceramics, cutting tools with a cutting surface and tappet facings formed of said ceramics |
| 07/23/1980 | EP0013594A1 Method and apparatus for measuring the rheological properties of an extrudable material |
| 07/22/1980 | US4213509 Hydrostatic setting apparatus for support of loads |
| 07/22/1980 | US4213349 Method of and apparatus for measuring stiffness |
| 07/22/1980 | US4213328 Apparatus for fluid pressure testing of engine cylinder heads and similar parts |
| 07/22/1980 | CA1081991A1 Portable machine for testing protective coatings |
| 07/08/1980 | US4211107 Pipe testing machine with clamping pressure keyed to hydrostatic test pressure |
| 07/01/1980 | US4210020 Pasta testing device |
| 06/25/1980 | EP0012728A1 Hardness testing apparatus provided with a safety stop device |
| 06/25/1980 | EP0012400A1 A method and apparatus for thermodynamically determining the elasto-plastic limit stress |
| 06/24/1980 | US4208920 Automatic spinning strength tester |
| 06/10/1980 | US4206769 Measurement of surface properties |
| 06/03/1980 | US4205551 Seal tester |
| 05/28/1980 | EP0011578A1 Method and apparatus for measuring the hardness of rock in a borehole |
| 05/20/1980 | US4203321 Method and apparatus for testing hydraulic and pneumatic systems |
| 05/14/1980 | EP0010988A1 Electrical friction sleeve cone penetrometer |
| 05/13/1980 | CA1077295A1 Dropweight sample tester |
| 05/06/1980 | CA1076835A1 Anchor bolt tester |
| 05/06/1980 | CA1076834A1 Testing cord-to-elastomer adhesion |
| 05/06/1980 | CA1076829A1 Optical method and apparatus for determining stress relaxation |
| 04/29/1980 | US4199976 Hardness testing apparatus |
| 04/29/1980 | CA1076388A1 Penetration body for impact strength measurement of wood |
| 04/29/1980 | CA1076387A1 Nozzle extraction process and handlemeter for measuring handle |
| 04/22/1980 | US4198870 Constant point of load application fracture specimen loading machine |
| 04/22/1980 | US4198865 Apparatus and method of monitoring anchored bolts |
| 04/22/1980 | CA1075932A1 Vibrating wire stress meter and method to clamp wires |
| 04/22/1980 | CA1075930A1 Fracture toughness test method |
| 04/08/1980 | US4196635 Test apparatus for the simultaneous loading of a test sample with longitudinal forces and with torque |
| 04/08/1980 | US4196616 Multipositionable support means for a hardness tester |
| 04/08/1980 | US4196611 Testing apparatus for determining abrasion resistance of a surface |
| 04/01/1980 | US4195532 Ski stiffness and camber indicator |
| 04/01/1980 | US4195512 Coal-shale interface detector |
| 04/01/1980 | CA1074903A1 Preliminary screening of wooden poles |
| 03/25/1980 | US4194402 Testing machine grip |
| 03/25/1980 | US4194392 Measuring adhesive force |