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| Number | Title | Issue Date |
| 8001826 | Methods and apparatus for high frequency impact testing An impact testing system for determining the shock response of a test structure includes a mass (e.g., a spherical steel ball) and a potential energy storage system (e.g., a spring-loaded mechanism) configured to store mechanical energy and, upon actuation, release ... | 08/23/2011 |
| 7886574 | Collision test apparatus and collision test method A projection device is configured by connecting a projectile supporting part to a spring supporting frame with multiple coil springs. The projectile supporting part is pulled while deforming the coil springs; a projectile is projected by accelerating the projectile ... | 02/15/2011 |
| 7849725 | Air cannon apparatus and system for golf ball testing An air cannon apparatus and system for test launching golf balls. The apparatus includes a barrel sized to slidably receive a golf ball, an air pressure tank coupled to the barrel by an air control valve, a golf ball air clamp assembly for holding a golf ball for ro... | 12/14/2010 |
| 7370538 | Method and apparatus for determining insulation thickness A method for determining the thickness of a layer of insulation comprises the steps of: contacting a top surface of a portion of the layer of insulation, compressing the portion of the layer of insulation until a predetermined compressive load is achieved, measuring... | 05/13/2008 |
| 7284445 | Strain waveform control apparatus, strain waveform regulating member, strain waveform control method by using strain waveform control apparatus, and strain waveform control program A strain waveform control apparatus of the present invention is adapted to horizontally supporting a printed circuit board over a trestle and cause strains on the printed circuit board by a dropped rigid ball with buffer blocks being located on both surfaces of the ... | 10/23/2007 |
| 7162919 | Blast pressure gauge Blast pressure gauges and methods for detecting blast pressure during a blast test. The gauges operate independently of power sources, are portable, and are used in harsh environments including test ranges. Each embodiment is constructed to detect blast pressures as... | 01/16/2007 |
| 7137285 | Method and instrument for characterizing treading surfaces, for instance for realizing synthetic turf surfaces An instrument (“artificial athlete”) for characterizing, from the biomechanical standpoint, a treading surface, such as natural grass cover or synthetic grass flooring, is configured for: dropping a weight from a given height on the surface, producing the conver... | 11/21/2006 |
| 7007540 | Methods and apparatus for conducting high g-force testing A high-g shock-producing device for testing a sample specimen is described which includes a beam and a shock column. The beam is of predetermined length and has at least one end substantially rigidly fixed with the specimen mounted thereon at a position remote from ... | 03/07/2006 |
| 6837165 | Bullet with spherical nose portion A bullet includes a frontward facing aperture. Contained within the aperture is a relatively hard bullet frontal element that provides advantageous bullet impact performance. In one embodiment, the frontal element is a steel sphere that provides advantageous penetra... | 01/04/2005 |
| 6743870 | Process for early detection of reactor fouling in gas phase polymerization A process for early detection of reactor fouling occurring during a gas phase polymerization of olefin(s) using a fluidized bed reactor having a fluidization grid fitted with detection devices. ... | 06/01/2004 |
| 6658914 | Method and apparatus for characterizing roll structure A system for imparting and detecting mechanical energy includes a projectile and a hollow tube allowing the projectile to move therein. A portion of the projectile is allowed to emerge from one end of the tube and thereby transfer mechanical energy to a r... | 12/09/2003 |
| 6116077 | Construction test apparatus Real scale investigations can be carried out on vehicle impacts using a vehicle, or part hereof, or crash barrier, tested on a large dynamic testing facility (LDTF). The LDTF includes nodes connected at either end of a sample under test crash barrier. The... | 09/12/2000 |
| 5859359 | Curling stone comparator A simple pneumatic device for use in comparing and matching curling stones, and evaluating ice surfaces and sweeping broom efficiencies is described. A pneumatic cylinder, charged by means of a compressed gas, is placed against the backboard of a rink and... | 01/12/1999 |
| 5535627 | Roll structure acoustic gage and method A device and method for determining the radial pressure profile of a wound roll of material uses internal and external sensors to measure the time of flight of an acoustic wave induced within the roll by sharply impacting the surface, or by impacting a me... | 07/16/1996 |
| 5487298 | Inertial Hopkinson bar shock sensor A device and method for measuring the intensity of high amplitude strain waves caused by the impact of a projectile or the detonation of an explosive on armor plate are disclosed. The sensor may be configured as a shock wave sensor. The shock wave sensor ... | 01/30/1996 |
| 5450742 | Method and apparatus for dynamic testing of a device A method of dynamically testing the functionality of a multi-part specimen comprises the steps of applying a predetermined reproducible shock loading to one part of the specimen and measuring the resulting shock load both at the point of application on sa... | 09/19/1995 |
| 5419176 | Particle detection and analysis The invention provides a method of, and apparatus for detecting and analyzing moving particles using an impact responsive transducer which generates a detection signal having an amplitude related to force of particle impact. The transducer output signal i... | 05/30/1995 |
| 5207106 | Method and apparatus for testing optical fibers An optical fiber (22) is tested for payout properties by supporting it on a payout support (24 ), preferably in the form of a hollow frustum of a cone, and attaching an unsupported end (26 ) of the optical fiber (22) to a projectile (42) that is thereafte... | 05/04/1993 |
| 5182254 | Superconducting electromagnetic projectile launchers A pair of copper rails on which a projectile is mounted forms an electrometic rail gun. One end of the rails is connected across an electrical coil which resides between a pair of Helmholtz coils made of a high temperature superconducting material. The H... | 01/26/1993 |
| 4829812 | Device for assessing processing stresses A device for assessing stresses in mechanical processing of agricultural or manufactured products has a core 11 and, adjacent to the surface a layer of piezo-electric plastic material 13. The device has physical characteristics simulating those of the pro... | 05/16/1989 |
| 4770527 | Photoelectric-piezoelectric velocity and impact sensor A photoelectric-piezoelectric velocity and impact sensor has a plurality of photoelectric light sources and associated photodetectors disposed on axes defining an array of light beams. A first electronic circuit is operatively coupled to the photodetector... | 09/13/1988 |
| 4696182 | Impact test apparatus An impact test apparatus includes a barrel adapted to contain pressurized gas and having a sealed end and an opposed open end. A shuttle including a bore for carrying a test sample is positioned for translation within the barrel. A seal is provided on the... | 09/29/1987 |
| 4696358 | Weighing a number of objects in succession To weigh objects in quick succession, the objects are projected with a known horizontal velocity onto a ramp which has a surface which curves down through 90°. The ramp can move horizontally in response to the impulse corresponding to the change in horiz... | 09/29/1987 |
| 4557143 | Launch setback simulator The launch setback experienced by an ordnance projectile is simulated. A field of water droplets of varying density is placed in the path of the projectile. The momentum exchange between the projectile and the water droplets retards the motion of the proj... | 12/10/1985 |
| 4512180 | Pellet durability tester A pellet durability tester is provided which establishes the durability of manufactured pellets by subjecting them to circulation in a closed air re-circulation path and establishing the weight ratio of whole pellets in the sample before and after testing... | 04/23/1985 |
| 4474050 | Foundry coke test apparatus A testing apparatus for measuring gas flow through a test sample bed of foundry cupola coke incidental to determining the hydraulic radius of the sample, the apparatus comprising a hollow cylindrical walled container where the internal wall has an elastom... | 10/02/1984 |
| 4422319 | Apparatus for testing grains for resistance to damage Corns and other grains are tested for resistance to breakage during shipment by being fed to a rapidly rotating impeller (30) mounted within a cylindrical impact chamber (16). The grains are metered into the center of the impeller (30) by a metering devic... | 12/27/1983 |
| 4375762 | Impact-fatigue test machine for grinding balls A closed system, impact-fatigue test machine for grinding balls comprised of a vertically extending guide member and a lift conveyor wherein the guide member lies above a recessed anvil and defines in its center a longitudinal opening. Each grinding ball ... | 03/08/1983 |
| 4163411 | Breech closure mechanism A mechanism for releasably holding and pre-heating a model, prior to launch of the model by and from a gun. The model is initially held in a collar of the mechanism in the breech of the gun, and is pre-heated by an induction coil and an r-f current. The c... | 08/07/1979 |
| 4109507 | Recirculating shot testing device A device is disclosed for testing the useful life of particulates, such as, steel shot, grit or other abrasives. The device employs a blast wheel for throwing the shot at high velocity against an annular target. The wheel and target are mounted on a rotat... | 08/29/1978 |
| 4070018 | Ball impact target with ball impact sensor A device for ball games, sensing velocity and scoring against a damping screen comprised of areas simulating strategic plays against a player's opposition and comprised of electrical sensor means applied to the back side of the screen and of minimum mass ... | 01/24/1978 |
| 4022053 | Projectile guide track A projectile guide track having a plurality of track assemblies in aligned relationship with one another. Each track assembly contains fixedly spaced rails for supporting a projectile during flight while undergoing testing in a ballistic range. Precision ... | 05/10/1977 |
| 4010631 | Method and apparatus for pulse shaping in ballistic simulators A ballistic simulation system including means to shape the deceleration pe by varying the rate of energy transfer in the system, including a shaped crush-surface on the mitigator and a momentum-exchange member having an elastic portion.... | 03/08/1977 |
