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Class Information
Number: 73/825
Name: Measuring and testing > Specimen stress or strain, or testing by stress or strain application > By loading of specimen (e.g., strength of material test) > Compressional > With hydraulic or pneumatic actuation
Description: Subject matter wherein the compressive load is applied by a fluid operated device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7591188 |
Stress and/or tension monitoring systems and methods |
Sep. 22, 2009 |
| 7584671 |
Apparatus for testing the load bearing strength of an architectural structure |
Sep. 8, 2009 |
| 7428845 |
Compression gauge |
Sep. 30, 2008 |
| 7370538 |
Method and apparatus for determining insulation thickness |
May. 13, 2008 |
| 7347105 |
Method for the analysis of a test specimen of reducible material that contains iron |
Mar. 25, 2008 |
| 7347104 |
Arrangement and method for the analysis of the strength of a specimen of reducible material that contains iron |
Mar. 25, 2008 |
| 7331244 |
Stamping press line simulation device and method |
Feb. 19, 2008 |
| 7191664 |
Testing of mechanical properties of materials |
Mar. 20, 2007 |
| 7143653 |
Enhanced triaxial tester with volume change device for measurement of flow properties of dry cohesive particulate systems under low confining pressures |
Dec. 5, 2006 |
| 7121149 |
Gyratory compactor apparatus and associated devices and methods |
Oct. 17, 2006 |
| 6952969 |
Ceramic ball bearing fracture test method |
Oct. 11, 2005 |
| 6889558 |
Real-time display of internal gyration angle in gyratory compaction material testing |
May. 10, 2005 |
| 6745635 |
Proof load test gauge for swag bearing |
Jun. 8, 2004 |
| 6729190 |
Ceramic honeycomb strength testing apparatus |
May. 4, 2004 |
| 6612183 |
Method for regulating the counterpressure in an apparatus for plasticising and quantitatively regulating plastic material |
Sep. 2, 2003 |
| 6539809 |
Test apparatus for measuring stresses and strains |
Apr. 1, 2003 |
| 5964445 |
Load counterbalancing system with a constant load displacement force |
Oct. 12, 1999 |
| 5832817 |
Constant pressure paper press |
Nov. 10, 1998 |
| 5641912 |
Method for remote application of variable load and/or displacement to specimens, components, or systems |
Jun. 24, 1997 |
| 5490432 |
Kit for operating upon bearings |
Feb. 13, 1996 |
| 5454260 |
Non destructive adhesion testing |
Oct. 3, 1995 |
| 5450756 |
Device and method for measuring and adjusting pressing load values on a press |
Sep. 19, 1995 |
| 5339693 |
Apparatus and method for testing tubular products |
Aug. 23, 1994 |
| 5287750 |
Apparatus for inspecting mechanical strength of bottom portions of bottom-closed hollow pipes |
Feb. 22, 1994 |
| 5197335 |
Apparatus for inspecting mechanical strength of bottom portions of bottom-closed hollow pipes |
Mar. 30, 1993 |
| 4856341 |
Apparatus for analysis of failure of material |
Aug. 15, 1989 |
| 4845995 |
Material tester |
Jul. 11, 1989 |
| 4768372 |
Test device, in particular for bottle-shaped containers as well as procedure for testing same |
Sep. 6, 1988 |
| 4762003 |
Material test machine for tension-compression tests at high temperature |
Aug. 9, 1988 |
| 4679441 |
Pressure balanced loading piston for triaxial test cells |
Jul. 14, 1987 |
| 4616508 |
Method and apparatus for producing a test piece of molding compound useful in measuring properties thereof |
Oct. 14, 1986 |
| 4607532 |
Apparatus for determining the behavior of powdered material under stress |
Aug. 26, 1986 |
| 4594900 |
Axial load testing machine |
Jun. 17, 1986 |
| 4567774 |
Determining mechanical behavior of solid materials using miniature specimens |
Feb. 4, 1986 |
| 4566868 |
Pressure source |
Jan. 28, 1986 |
| 4502338 |
Triaxial apparatus for testing particulate material and method of using the same |
Mar. 5, 1985 |
| 4332175 |
Counterbalance loading device |
Jun. 1, 1982 |
| 4184424 |
Waste material testing apparatus |
Jan. 22, 1980 |
| 4122704 |
Portable variable expansion testing device for measuring lateral pressure induced on a material by a vertical applied pressure |
Oct. 31, 1978 |
| 3994158 |
Hydraulically operated workpiece testing machine |
Nov. 30, 1976 |
| 3991608 |
Impact simulator method and apparatus |
Nov. 16, 1976 |
| 3975950 |
Apparatus for testing material strength |
Aug. 24, 1976 |
| 3945249 |
Testing apparatus for structural members |
Mar. 23, 1976 |
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