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Class 73/854 - By angular displacement of opposite ends of specimen


Subclass of Class 73 - Measuring and testing
Definition: Subject matter where the stressing is effected by movement
No. of patents: 32
Last issue date: 07/17/2007


NumberTitleIssue Date
7243531Method and apparatus for dynamically locating neutral shaft plane
Apparatus and method for locating the neutral bending plane of an elongated flexible shaft, typically a golf club shaft, by mounting one end portion of the shaft in a clamping mechanism having a rotatable clamp member that permits the shaft to turn about its longitu...
07/17/2007
7140486Device for monitoring abnormality in a chain
A chain monitoring device is provided with a base, guiding posts fixed to the base, a member movable along the guiding posts, a chain sprocket rotatable with a chain with its teeth being engaged into the chain, springs for resiliently urging the member for the engag...
11/28/2006
7024953Apparatus and method for tuning a golf shaft
A method of making a golf club includes making a first determination of the location of the effective seam in a shaft and then more precisely locating the seam before attaching a golf club head with the face of the club head facing in a neutral direction. ...
04/11/2006
6968747Dynamic balance-testing method for a golf club shaft
A dynamic balance-testing method for a golf club shaft in accordance with the present invention comprises steps of: fixing a first end of a golf club shaft; measuring reacting forces of a constant displacement of a second end of the golf club shaft in a plurality of...
11/29/2005
6964203Pedalling force or chain tension detector and devices using said detector
A sensor for pedalling force and/or chain tension is mounted on a bicycle frame bottom bracket axle. An intermediate element that can pivot relative to the bottom bracket axle can pivot relative to the frame about a ring offset relative to the bottom bracket axle. A...
11/15/2005
6905422Shaft for light-weight golf clubs
A golf club shaft is 35-50 percent lighter than a conventional shaft while maintaining the outer diameter and structural characteristics of conventional shafts. The shaft has at least four layers of fiber reinforced material. The fiber reinforced layers are from inn...
06/14/2005
6609429Method and apparatus for locating and aligning golf club shaft spine
The preferred orientation, or planar oscillation plane, of a golf club shaft is located by measuring the oscillation of the shaft when a horizontal impulse is applied and from those measurements determining an orientation in which the oscillation would be...
08/26/2003
6571640Method and apparatus for measuring a flexural characteristic of a golf club shaft
An apparatus and a method for measuring the flexural characteristic of a golf club shaft. The apparatus includes a table having a clamping structure for clamping the golf club shaft thereto. A data collection system having a computer coupled to an image r...
06/03/2003
6532805Micro-material testing apparatus
An atomic force microscope including a cantilever, a transferring device and a displacement detecting device is used for conducting a material test of a test member based on a load amount and a displacement amount. The test member may be fixed to the cant...
03/18/2003
5955680Device for measuring bending strength of sheet material
A device for measuring the natural bending strength of a sheet material, and for measuring the bending strength of a creased or scored portion of the sheet material, and for dynamically analyzing such test results. The device has a rotatable clamp, a load...
09/21/1999
5936165Methods for uniform heating and cooling of large objects
A system for simultaneously measuring strains in a test member includes spatial-position members which are coupled to different portions of the test member and first and second displacement sensors which are spaced apart by a sensor space and coupled to t...
08/10/1999
5918255Method for testing motor armature shafts
A method for testing motor armature shafts is disclosed. The method includes simulating armature shaft loading conditions to test armature shaft reliability for failure. The shaft has a longitudinally extending axis, which during operation is the axis of ...
06/29/1999
5872318Method and apparatus for inducing fully-reversed three-dimensional loading on a non-rotating beam
The inventive fatigue-testing apparatus features a compact orbital mechan which rotates a bending force around a non-rotating test section and a stationary test bed. In addition to applying a bending force, some inventive embodiments apply an axial force...
02/16/1999
5606134Score bend testing apparatus and method
A score bend testing apparatus consists of a base having an upwardly facing support surface which supports a scored sheet of material. The support defines a forward edge, and the score is positioned forwardly of the forward edge while the rearward portion...
02/25/1997
5574227Paper board crease force measuring device
An apparatus and method for determining the crease characteristics of a corrugated paper board sample including a sample location area, a load cell located such that a portion of the surface of the sample overlies the load cell, and a creasing edge which ...
11/12/1996
5505095Rising step-load test apparatus
A rising step-load test apparatus for subjecting the notched region of a fracture specimen to tension by applying four-point bending to the specimen, and having an adaptor that can fit into the test apparatus in four-point bending and convert the bending ...
04/09/1996
5460052Apparatus and method for measuring composite interface properties
An apparatus and method for measuring interface properties of a composite test specimen includes a first jaw for gripping the specimen. The specimen has a fiber extending through a matrix forming a fiber-matrix interface with a portion of the fiber extend...
10/24/1995
5447072Torsional tester for circuit cards
A torsional tester includes test stations for one or more circuit cards. In each test station, one end of the circuit card under test is held stationary while the opposite end is twisted in a card holder mounted to pivot about an axis, being alternately d...
09/05/1995
5142918Apparatus to measure the bending length and bending rigidity of fabrics
An apparatus to measure the bending length and bending rigidity of a piece of fabric comprising a generally planar surface upon which the plate of fabric is moved. The surface terminates at one end with an edge over which a leading end of the fabric passe...
09/01/1992
4819489Device and method for testing the adherence of a coating layer to a material
A device for testing the adherence of a coating to a material includes a cone section and roller for bending the material around the cone section. The bent piece has a sharp bend at one end and a gradual bend at the other end. The proximity to the sharp b...
04/11/1989
4735093Apparatus for applying a load to a material
A method of and an apparatus for applying 3 or 4 point bending to a specimen of a material. The apparatus comprises bending members to contact the specimen, a drive system coupled to at least one of the bending members to cause relative vertical movement ...
04/05/1988
4682504Device for measuring a stiffness of a golf-club shaft
A device for measuring a stiffness of a golf-club shaft comprises a clamp for holding one end of a golf-club shaft so that the golf-club shaft extends in a substantially horizontal position. A pointer member having a tip end and a root portion is detachab...
07/28/1987
4656872Wrap-around bend test method and apparatus
A method and apparatus for testing the ductility of a weld formed within a specimen utilizes a cylindrical mandrel and roller mounted for rotation along mutually parallel axes. Relative linear movement of the mandrel and roller clamps a specimen therebetw...
04/14/1987
4537080Side loading specimen grip
Hydraulically actuated grips are constructed to permit loading of specimens from either side of the grips. The grips are particularly adapted for use with flat specimens, are easily actuated, and are symmetrically designed so that when actuated, the grips...
08/27/1985
4458538Apparatus and method of measuring edgewise compressive deformation
An apparatus and method of measuring edgewise compressive deformation in sheet material comprises providing a specimen beam having an inner curved layer of the sheet material to be tested, an outer curved strip spaced radially outwardly of the sheet mater...
07/10/1984
4179941Method of and apparatus for measuring the flexural stiffness of a sheet like sample
A method of and apparatus for measuring the flexural stiffness of a sheet like sample. The sample is placed on an obliquely positioned surface with its upper edge above a horizontal clamping line. The portion of the sample above the clamping line is of su...
12/25/1979
4171647Torque testing instrument for tools, especially spanners
A torque-testing instrument is disclosed for testing tools such as spanners, wrenches and the like. The instrument comprises a measuring assembly, a reading device and means for transmitting measured values from the measuring instrument to the reading dev...
10/23/1979
4027531Method and machine for locating variations in tension in a saw blade
A method and machine for hammering circular saw blades automatically, to correct uneven distributions of residual stresses, and distortions of the blade surfaces from true planes, so that the blades will run true. This operation has previously only been p...
06/07/1977
 
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