Class 73/83 - With successive minor and major load

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein a penetrator or indentor is urged
No. of patents: 39
Last issue date: 11/18/2008

Number	Title	Issue Date
7451636	Nanoindentation surface analysis tool and method The present invention provides a novel method for determining the mechanical properties of the surfaces of materials including thin films. Generally, the method is comprised of laterally scanning the surface of the film with an array of cantilever tips varying tempe...	11/18/2008
7380443	Hardness testing apparatus A hardness testing apparatus has an indenter shaft having an indenter at a top thereof, a force motor for moving the indenter shaft in its axial direction and applying a predetermined test force to a sample through the indenter, an external force detection section f...	06/03/2008
7353715	System, apparatus and method for testing under applied and reduced loads A system which cyclically applies and reduces a load on a test specimen and which can use an apparatus comprising: (a) a frame; (b) a load adjusting section having a fluidic mechanical muscle that contracts and extends in length to cyclically apply and reduce a load...	04/08/2008
7328630	End effector inspection apparatus and method A method for using an end effector for inspecting a structure is provided. An end effector includes a magnetically coupled attachment member for connecting the end effector to a control system bridge. An end effector also includes a telescoping arm at least partiall...	02/12/2008
7302831	Scratch testing device A device and method for scratch and/or mar testing the surface of a material specimen. In an embodiment, the scratch testing device comprises a scratching member. In addition, the scratch testing device comprises a carriage operable to move the scratching member. Fu...	12/04/2007
7162932	Method for determining the modulus of elasticity of paper In a method for determining the radial modulus of elasticity of paper or a corresponding web-like material that can be reeled or wound on a reel, the connection between the force and deflection of a material arranged in layers is measured. The measurements of force ...	01/16/2007
7066013	Hardness tester A hardness tester includes a supporting frame having a guiding channel, a driving axle slidably disposed in the supporting frame, and a penetrating pin, having a pin head, coaxially disposed in the guiding channel in a slidably movable manner to coaxially align with...	06/27/2006
7040146	Soil or snow probe A soil or snow probe which incorporates a load cell in the probe head and also an accelerometer so that a vertical strength profile of the snow or soil can be established. The device does not need to be driven at a constant speed and can be manually driven into the ...	05/09/2006
6976387	Hardness measuring device comprising a housing and a penetration body in particular a manual device The hardness measuring device (18) is provided with a) a penetration body (20), which penetrates a workpiece (28) along a penetration vector (58) during a measuring process, b) a housing (30) which embodies a guide track (32...	12/20/2005
6962073	Method and device for determining the values of stiffness and dampening of surfaces The present invention relates to a method for determining the values of stiffness and dampening, in particular of surfaces for sports fields. The invention furthermore relates to a device for carrying out the aforesaid method. The object of the present invention is ...	11/08/2005
6691564	Hardness tester A hardness tester generally comprises a tester assembly is supported on a frame assembly. The tester assembly has a tester housing that supports a motor drivingly connected to a load cell and an indentor. The frame assembly includes a vertically oriented ...	02/17/2004
6601456	Fretting fixture for high-cycle fatigue test machines A fretting fixture accessory for a_test machine (10) that induces high-cycle fatigue (at kilohertz vibration rates) in a specimen of a material under test. The fretting fixture (20) is clamped to the test specimen (21), for the purpose of testing for fret...	08/05/2003
6516655	Device and method for testing sheet metal deformation A method and device for testing a metal part for weakness to deformation. The device includes a motor that moves a shaft and a load applicator toward and away from a part being tested. The motor is activated in accordance with a predetermined sequence and...	02/11/2003
5450745	Edge strength tester A device for testing a specimen for the purpose of ascertaining strength of an edge or hardness of a surface employs a pivoted rocker arm whose two extremities are interactive with voice coils that impart a controlled torque and velocity to the rocker arm...	09/19/1995
5404760	Blade path thermocouple and exhaust gas extraction probe for combustion turbines A dual function probe for measuring blade path temperature and for extracting exhaust flow gases from a combustion turbine comprises an elongate tubular member having an open end and a sealed end. An elongate thermocouple element is centrally disposed wit...	04/11/1995
5062293	Apparatus for measuring hardness of materials An apparatus for measuring hardness of materials has an indentor to be pressed into the surface of material, a rod in the form of a center plate having a shank rigidly secured to one end thereof and the indentor rigidly secured to the other end thereof. T...	11/05/1991
4773258	Electronic measuring gauge for hardness tester A measuring gauge which may be retrofitted to existing hardness testers to replace existing mechanical measuring gauges and which can be installed with minimal assembly expense. The gauge includes a movable feeler pin, a movable tracking member, and a res...	09/27/1988
4667509	Digital tester for measuring the hardness of the material An automatic tester for the hardness of materials is disclosed in which the operations are automated and in which the possibility of human error is significantly eliminated. Particularly, a linear digital encoder is employed which is attached to the capst...	05/26/1987
4535623	Material hardness testing apparatus The surface hardness of material is tested by the extent of penetration of a tool thereinto by moving the tool onto the surface from a low to a high value of compressive force and then back to the low value by reversible rotative movements with the penetr...	08/20/1985
4534212	Fully automatic penetration hardness tester A fully automatic penetration hardness tester which includes a penetrator and clamp driven by respective serially-connected pneumatic cylinders for engaging test specimens. Pressure regulators are coupled to the respective cylinders for first applying cla...	08/13/1985
4442705	Clamping nosepiece for hardness tester A clamping nosepiece for a hardness tester is disclosed. The clamping nosepiece is removable from the tester and includes means to adjust the position of the penetrator with respect to the clamp. Additionally, the amount of clamping force with which the c...	04/17/1984
4435976	Apparatus for measuring the hardness properties of materials Apparatus for measuring the hardness properties of materials may comprise: a frame for supporting the apparatus and the material to be tested; a test head assembly mounted on the frame for applying predetermined measuring forces to the material and a clam...	03/13/1984
4380926	Battery electrode hardness tester A unique electrode plaque hardness tester, and a method of testing for the hardness of an electrode plaque specimen, are taught. The hardness tester is of the indentation type, and permits the hardness testing of an electrode plaque that is very thin (e.g...	04/26/1983
4328702	Operating cam stop means for hardness tester An operating cam for use with a hardness tester may comprise: first and second cylindrical journal portions for respective disposition with first and second cylindrical holes provided through a housing of the hardness tester; a substantially cylindrical c...	05/11/1982
4312221	Hardness tester mounting apparatus Mounting apparatus for use with a hardness tester which includes a reciprocating penetrator for measuring hardness properties of the materials to be tested. The mounting apparatus may comprise: an elongated base member having parallel upper and lower flat...	01/26/1982
4304123	Micro hardness tester The invention relates to a micro hardness tester (durometer) having a penetration body such as a point or the like penetrating into a sample under load. An electrical means is provided for loading the penetration body and the bearing force of the penetrat...	12/08/1981
4246777	Test device for containers A machine for testing a container such as a paper or plastic cup. The cup rests upon a platform and its stiffness is measured by applying a given load to the side of the cup by means of a motor driven load applying arm. The applied load and the resulting ...	01/27/1981
4245496	Portable material hardness tester A portable hardness tester including a surface sensing member yieldably mounted for engagement with the surface of material to be tested and a penetrator yieldably mounted adjacent the sensing member for joint contact with the surface; manually applied me...	01/20/1981
4182162	Durometer A durometer is provided. The durometer includes an indentor point for penetrating under pressure of an applied load a surface being tested for hardness. Also included is a load generator, which may be a hydraulic cylinder. A support structure is provided ...	01/08/1980
4182164	Penetration hardness tester with digital readout A semi-automatic penetration hardness tester for measuring hardness of a test specimen in a selected one of a number of hardness number scales. A digital display indicates penetrator displacement during application of a minor load in a first mode of opera...	01/08/1980
4136555	Reference-load variable hardness tester A reference-load variable hardness tester for measuring Rockwell hardness and Rockwell superficial hardness, having an internal coil spring and an external coil spring disposed coaxially with a load shaft for each reference-load. When measuring Rockwell h...	01/30/1979
4118975	Loading shaft positioning apparatus for hardness tester An apparatus for positioning a loading shaft of hardness tester prior to application of test load. A loading shaft position detector is provided for detecting the arrival of the loading shaft at a given position when elevating it, and the detector control...	10/10/1978
4116048	Hardness tester Hardness tester adaptable to automatic testing of rubber comprising sample support surface, indentor perpendicular to the surface slidably movable within a housing, means for introducing gas under pressure between the indentor and the housing to laterally...	09/26/1978
4107978	Durometer according to Rockwell system An apparatus for testing the hardness of a workpiece has a lower structure having a surface defining a reference plane from which can project an axially displaceable penetrator. A preload spring biases the penetrator with a relatively small preload force ...	08/22/1978
4104901	Hardness testing machine A hardness testing machine comprises an indenter mounted on one end of a lever. A workpiece clamp is mounted on a further lever to engage the same face of the workpiece as is engaged by the indenter. A piston andcylinder unit is arranged to transfer to th...	08/08/1978
4061020	Deformeter A deformeter for testing the firmness of fruit as an indication of its maturity includes a support for an individual fruit effective to convey the fruit to a testing location, at which sensors are urged to contact the fruit surface lightly, preferably on ...	12/06/1977
3949600	Load application mechanism of Rockwell hardness tester A Rockwell hardness tester having a load application mechanism having a load transfer unit divided into an upper transfer member and a lower transfer member having bores through which an indenter shaft of the tester extends axially with some play. The tra...	04/13/1976
3939700	Material hardness tester An improved tester for measuring the hardness of materials, the tester having multiple spring means and an adjustable control for placing one or both of the spring means into operation to load the tester under different minor loads....	02/24/1976

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Class 73/83 - With successive minor and major load