Class 73/666 - Having spring support

Subclass of Class 73 - Measuring and testing
Definition: Subject matter wherein the table or platform is supported
No. of patents: 23
Last issue date: 01/24/2012

Number	Title	Issue Date
8100017	Vibration test apparatus with an actuator coupled to a reaction mass movable along a linear axis A testing apparatus, for subjecting a device-under-test to oscillating acceleration, includes a stage having a mounting surface attachable to the device-under-test. An actuator is coupled to the stage, and also coupled to a reaction mass movable along a linear axis....	01/24/2012
7299698	Vibration test module having controllable vibration attributes The present vibration test module enables a test engineer in the field of vibration test systems to precisely implement a vibration environment that is applicable to a wide range of applications and performance characteristics. The vibration test module comprises ad...	11/27/2007
7063748	Methods for coating particles and particles produced thereby Methods of coating core materials by providing target materials and core materials; ablating the target materials to form ablated particulate target materials; and coating the core materials with said ablated particulate target materials; wherein the method is perfo...	06/20/2006
7024323	Control system for a failure mode testing system A control system for a failure mode testing system is described. The control system employs at least one control algorithm that enables the testing system to be operated at optimal pressure and frequency levels in order to generate a desired system response, such as...	04/04/2006
6484583	Through-transmission ultrasonic inspection apparatus and method A hollow composite structure is inspected using an ultrasonic inspection apparatus including a yoke having a base, a first arm extending from the base, and a second arm extending from the base parallel to the first arm. A first ultrasonic transducer is af...	11/26/2002
6474167	Mechanical amplifier A shaker system (10) that employs a mechanical amplifier (40) for increasing the shaking capacity of the shaker (14). The mechanical amplifier (40) includes a spring (54) positioned within a support column (42) where the spring (54) is attached to an inte...	11/05/2002
5979242	Multi-level vibration test system having controllable vibration attributes The multi-level vibration test system has controllable vibration attributes that enable the test engineer to precisely implement a vibration environment that is applicable to a wide range of applications and performance characteristics. The multi-level vi...	11/09/1999
5594177	Shaker table A shaker table comprises upper and lower plates spaced apart by a plurality of spacers that fit between the plates. Each spacer has an upper shaft, which threads into a vibrator opening in the upper plate, and a lower coaxial shaft, which slides into a vi...	01/14/1997
5197333	Apparatus to test the resistence to vibration of brake beams for railway car truck assemblies This invention relates to an apparatus to test the resistance to vibration of brake beams for railway car truck assemblies having a union frame, a side frame at each end of the union frame, each having front and rear ends, and a pair of beam carriers, eac...	03/30/1993
5187982	Vibration controlled experimenting device provided with a motor with an imbalanced rotor A controlled vibration experiment device having a vibration model structure to simulate actual mechanical vibration and to monitor and analyze the vibration by a computer monitor. The device has a base plate, a supporting frame, a T-shaped sliding rail, a...	02/23/1993
4899588	Method and apparatus for determining elastic constants in tubes Method and apparatus for determining Young's Modulus of a specimen by measuring the speed at which stress waves, either P-waves or S-waves, propagate therein. An embodiment of the apparatus includes two fixtures which are removably affixed to opposite end...	02/13/1990
4735089	Shaker table A shaker table (10) includes a table base (12) mounted upon isolating supports (32) and vibrated by vibrators (34, 36). The vibration is conveyed through and damped in a flexure member (16) comprising pairs (26, 28) of honeycomb layers (18, 20, 22, 24) jo...	04/05/1988
4499772	Flexural support member having a high ratio of lateral-to-axial stiffness A convoluted flexible support structure is provided which is capable of supplying a lateral to axial spring rate in excess of 1,000 to 1. A support member in the form of a steel disc having a specified number of rather large radius, concentric convolution...	02/19/1985
4446734	Motor driven exciter A hammer-type device is driven by a cam and spring arrangement in reciprocating motion to strike a moving train wheel for producing vibrations therein which are used to detect defects in the wheel....	05/08/1984
4445381	Device for testing the vibration strength of a test body A device for testing the fatigue vibration strength consists of a framework carrying a spring-mounted vibrating body, an electromagnetic exciter arranged between the vibrating body and one holding element to hold the test body. There is also an adjustable...	05/01/1984
4248324	Seismic vibrator and method for improving the output of a seismic vibrator A method and apparatus for improving the power output of a seismic vibrator are provided. Compliant elements with variable stiffnesses are interposed between and connected to the holddown mass and the baseplate. When the compliant elements have a first st...	02/03/1981
4135598	Lift and isolation system for seismic vibrator Apparatus for truck-mounting of vibrational seismic energy transducers, particularly shear wave transducers, that provides improved vibrational damping and energy coupling into the earth. The apparatus consists of a four column, hydraulically actuatable s...	01/23/1979
4112776	Earthquake simulator An earthquake simulating machine has a vibrating platform mounted in a frame. The platform is driven by a hydraulic piston which reciprocates the platform through a lever system having a mechanical advantage of about ten to one. The vibration of the platf...	09/12/1978
4069706	Complex vibration tester A mechanical complex vibration tester is provided which is capable of simultaneously applying a plurality of discrete frequencies to a workpiece positioned on a test surface of the device to simulate random vibration testing. The vibrations may be varied ...	01/24/1978
4019374	Electromagnetic impulser for dynamically loading a structure An impulser for percussively loading a structure to generate stress waves in the structure by driving a hammer into impact relation with the structure and generating an electrical signal in timed relation to the impact. The impulser may embody means, such...	04/26/1977
4007623	Spring operated accelerator and constant force spring mechanism therefor A spring assembly consisting of an elongate piece of flat spring material formed into a spiral configuraton and a free running spool in circumscribing relation to which this spring is disposed. The spring has a distal end that is externally accessible so ...	02/15/1977
4001658	Oscillator for non-sinusoidal movements An oscillator for generating non-sinusoidal, preferably triangular movements from a harmonic synthesis of individual sine oscillations. The oscillator comprises a plurality of mechanically intercalated resilient oscillator systems which each comprise an e...	01/04/1977
3945246	Vibrating table with dual plate top This invention relates to a vibrating table where a rotary motion vibrator is used to provide vertical oscillations. In this table top arrangement the vibrator is secured to a frame or lower plate member preferably at or about its midpoint. This lower fra...	03/23/1976

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Class 73/666 - Having spring support