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Patent No. 6745394

Ballistic resistant body covering

A ballistic resistant body covering for protecting the torso, groin and neck area from ballistic missiles.

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Class 73/578 - Electromagnetic drive


Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the body or body supporting unit
No. of patents: 15
Last issue date: 09/12/2006


NumberTitleIssue Date
7107159Systems and methods to determine elastic properties of materials
The present invention provides systems and methods to used a measured driving-point response of a nonlinear material to determined one or more elastic properties of the material. The present invention takes advantage of the full information represented by the transi...
09/12/2006
6918300System and method for determining the resonant frequency and/or amplitude of an oscillating appliance such as a power toothbrush
A system and corresponding method for determining the frequency and/or amplitude of an oscillating apparatus, which includes a driving assembly having a stator portion and an armature portion, and a driving signal circuit which supplies a driving signal to the stato...
07/19/2005
6868330Method of setting the knock detection sensor of a piston engine
A method of operating a knock detection system of a multi-cylinder piston engine in which the knock detection system comprises a sensor arranged in connection with each cylinder and a measurement circuit connected to the sensor includes running the engine at a load ...
03/15/2005
6704664Fatigue sensitivity determination procedure
A method for determining the sensitivity of the fatigue life of a structural component with respect to specific design parameters includes obtaining the stress profile for a structural component under random process establishing a relationship between the...
03/09/2004
6553838Detection of anomalies on railroad tracks
The present invention relates to a method and apparatus for detecting anomalies, defects or electromagnetic properties of electrically conductive and magnetically permeable materials by using a magnet to partially saturate the material, thereby lowering i...
04/29/2003
6431000Method and apparatus for high cycle fatigue life test
A capacitance probe measures and tracks frequency and amplitude changes of a component during a high cycle fatigue portion of a life test. The probe includes an internal oscillator, an adjustable receiver circuit, a product detector, and a pair of gain am...
08/13/2002
6314377Optimal location of drive assemblies within a multiple drive array
A method and system for strategically arranging drive assemblies within a multiple drive array that includes multiple drive locations. First, a vibration classification is assigned to each drive location among a plurality of drive locations within a multi...
11/06/2001
5965816Computer program, system and method to specify random vibration tests for product durability validation
An application program and computer system for determining the testing profile for accelerated laboratory random vibrational testing of a product, including the application program steps of (i) selecting the frequency range covered in the laboratory accel...
10/12/1999
5767406Method to specify random vibration tests for product durability validation
A method for determining the testing profile for accelerated laboratory random vibrational testing of a product, including the steps of (i) selecting the frequency range covered in the laboratory accelerated testing, (ii) developing a simplified composite...
06/16/1998
5703446Method and apparatus for controlling the oscillatory motion of a test device
A method and apparatus for controlling the oscillatory motion of a test device by using amplitude and DC offset feedback for control purposes. The force applied to the test device is monitored by a load sensor and compared to a preset desired amplitude lo...
12/30/1997
5612495Non-destructive examination device
A non-destructive examination device has an excitation current generation device for supplying an excitation current based on a control signal from a control device, a vibration excitor device for generating an elastic wave in accordance with athe excitat...
03/18/1997
5047992Electromagnetically induced acoustic well logging
An electromagnetic source or sources in a sonde in a well bore is caused to emit electromagnetic forces into the well casing. The electromagnetic forces cause displacement of the casing, inducing acoustic waves. The acoustic waves may be either P-waves or...
09/10/1991
4539845Driving system for exciting a mechanical component at its resonant frequency for fatigue-testing purposes
Device for fatigue-testing a mechanical component by exciting this component (1), to which massive armatures (2, 3) may be attached, using an electromagnetic vibrator (13) fed by a generator, characterized in that the said generator comprises a displaceme...
09/10/1985
4026142Eddy-current system for the vibration-testing of blades
This invention is an improved system for the vibration-testing of cantilevered non-ferrous articles by inducing eddy currents therein. The principal advantage of the system is that relatively little heat is generated in the article being vibrated. Thus, a...
05/31/1977
4002058Method and apparatus for vibration of a specimen by controlled electromagnetic force
Method and apparatus for applying controlled electromagnetic force to a test specimen such as a turbine bucket to induce vibration in the specimen. The force is applied by means of an electromagnetic field produced by an electromagnet. A controlled power ...
01/11/1977
 
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