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Comic actor Danny Kaye received patent D166,807 for the co-design of "Blowout Toy or the Like". It's similar to one of those toys that unravels when you blow into at a birthday party except Kaye's has three blowouts going in different directions, not just one.

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Class 73/577 - Fatigue study


Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the body is subjected to prolonged
No. of patents: 64
Last issue date: 05/24/2011


  2  
NumberTitleIssue Date
4955269Turbine blade fatigue monitor
An on-line vibratory fatigue monitor measures displacement of an object such as the blade of a turbine rotor to generate a displacement signal and calculates accumulated fatigue in the object in dependence upon the displacement signal. The displacement of...
09/11/1990
4897796Nondestructive measurement of fractions of phases in mixtures and composite materials
The weight fractions of the phases of a composite material working specimen are determined nondestructively by first performing a sufficient number of nondestructive and destructive calibration measurements on the properties of calibration specimens. The ...
01/30/1990
4894787Automatic load monitoring system with remote sensing
A novel system for determining the magnitudes of loads on rotating helicopter components from signals remotely measured on the helicopter fuselage is characterized by a processor which decomposes the measured signals into corresponding Fourier components ...
01/16/1990
4794545Nondestructive measurement of fractions of phases in mixtures and composite materials
The weight fractions of the phases of a composite material working specimen are determined nondestructively by first performing a sufficient number of nondestructive and destructive calibration measurements on the properties of calibration specimens. The ...
12/27/1988
4763528Non-destructive method for determining at least one point of a crack front in a part and an apparatus for the implementation of the method
The device concerns a method for detecting the position of at least one point of the crack front within a part (4) subjected to fatique stresses or to a ductile rupture. An ultrasonic beam is used focused in the plane P of the crack growth; the axis of th...
08/16/1988
4751657Method and apparatus for detecting axial cracks in rotors for rotating machinery
Axial cracks in the rotor assembly of a variety of rotating machinery are detected while the rotor is being rotated, by sensing mechanical vibrations of the rotor at a location along the length thereof to produce a corresponding rotor vibration signal. A ...
06/14/1988
4733361Life usage indicator
Apparatus for determining the life usage of components subject to variable operating conditions particularly helicopter gears subject to variable torque. A monitor 10 provides an analogue signal of the level of operating parameter which is passed through ...
03/22/1988
4609994Apparatus for continuous long-term monitoring of acoustic emission
Provided is apparatus suitable for continuous long-term monitoring of acoustic emissions, particularly from large structures such as pipelines. The apparatus comprises a plurality of detector-analyzer units coupled to a central control unit via a communic...
09/02/1986
4609992System for monitoring torsion damage to a composite line of shapes through a driving machine and a driven machine
First and second devices (8,9) measure the speed of rotation at two widely separated points H and J along a line of shafts, e.g. through a turboalternator unit. Parameters representative of the opposing torque are determined by a third device which is res...
09/02/1986
4577501Probe coil snubber
The present invention utilizes a wire wool slug packed inside a helical coil of an aircraft engine sensor in order to reduce vibration damage to the coil....
03/25/1986
4538462Adhesive bond integrity evaluation method
The invention is a method of determining whether an adhesively bonded joint between two structural elements meets established strength requirements. The method comprises the following steps: (1) Determining by test the levels of acoustic energy to be dire...
09/03/1985
4525219Ampule cleaning and quality control system
Ampules may be cleaned and quality controlled by submerging frangible, sealed, partly filled, floatable ampules in a container in an ultrasonic cleaning tank bath in such manner as to not only clean all the ampules but also break a large portion of any fl...
06/25/1985
4499770Systems for monitoring changes in elastic stiffness in composite materials
Traversing energy flux transmitted into a fiber/matrix composite structure is propagated through the structure in directions which vary depending upon the elastic stiffness condition of the composite. Degradation in elastic stiffness of the composite, fro...
02/19/1985
4408294Method for on-line detection of incipient cracks in turbine-generator rotors
A method is disclosed for detecting incipient cracks in the rotor of a turbine-generator while the turbine-generator is on-line operating under normal conditions. Vibration signature analysis is performed on a set of difference signals produced by superpo...
10/04/1983
4355538Exo-electron non-destructive test device and method
A non-destructive testing device and method is provided wherein a test piece is held in a test stand located in a test enclosure. The test enclosure is evacuated. The test stand and test piece held therein is then vibrated, immediately after which the tes...
10/26/1982
4283956Method of detecting the onset of cracking in articles during dynamic testing
A method is disclosed for detecting the onset of cracking in an article subjected to dynamic loading. The article is subjected to a dynamically changing load, and additionally is loaded and vibrated at its natural frequency. The onset of a crack in the ar...
08/18/1981
4255978Torsional vibration monitoring apparatus for a rotating shaft system
A torsional vibration monitoring system for monitoring torsional vibration occurring in a rotating shaft system such as in a power generator turbine is disclosed. Torsional vibrations are measured at a small number of measurable positions on the rotating ...
03/17/1981
4232554Thermal emission flaw detection method
A method of detecting very small structural flaws at loads below those which cause the flaws to propagate is disclosed. Certain phenomena and relationships of fracture mechanics are utilized in conjunction with the generation, detection and interpretation...
11/11/1980
4184205Data acquisition system
A data acquisition system utilizing a microcomputer and incorporating a plurality of monitors each adapted to produce an electrical signal indicative of a physical condition of apparatus to be monitored. The electrical signals are fed via multiplexing equ...
01/15/1980
4084427Holographic recording instrument for structural integrity verification and other applications
An improved holographic recording instrument for recording on a holographic recording medium two successive holograms of the structure under differing stress conditions to produce a holographic interferogram containing information defining a deformation f...
04/18/1978
4031366Low cycle fatigue damage counter
An electrical input signal representative of the existing operating state of a rotating bladed disk or other rotating member is classified into one of a plurality of predetermined operating states and a sequence detector is employed for detecting the occu...
06/21/1977
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
3974364Structure for and method of error compensation
Structure for and method of compensating for a mechanical frequency response structure induced phase shift of an alternating electrical command signal in a closed loop control circuit so that magnitude errors independent of phase errors may be utilized in...
08/10/1976
3955409Device for torsional oscillation testing
A device is described for the torsional testing of test bodies which avoids reference to the zero point of oscillation and, accordingly, is independent of zero point shifts. The device is of the type wherein a torsional pendulum can be made to undergo dam...
05/11/1976
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