Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7905150 | Inspection fixture for the simultaneous admission of a disk-shaped test specimen with a search gas and a mechanical load as well as pertinent testing method The invention relates to a test device for simultaneously exposing a disk-shaped test specimen to a flowing and pressurized test gas and mechanical load as well as an associated test method. The test device is comprised of the following components: a specimen seat, ... | 03/15/2011 |
| 7647839 | Installation and method for testing system of loads of a sample using a packer A unit dedicated to mechanically loading a tubular sample. At least one packer is housed in a sample at a test zone, having a longitudinal extension greater than that of the test zone and including i) a first pressure mechanism to cause local variation in the diamet... | 01/19/2010 |
| 7540200 | Method and apparatus for fluid flow testing This invention relates generally to testing apparatus and methodology for measuring fluid dynamic properties of structures within fluid flows. One embodiment includes a fluid induced motion testing apparatus of the type which includes a test rig suitable for holding... | 06/02/2009 |
| 7363821 | Systems and methods for fatigue testing stents Systems and methods for fatigue testing one or more stents based on measured electrical resistance levels of each stent. Pairs of lead lines from an ohmmeter are connected to a respective stent. The respective stent is mounted onto an expander having an interior tap... | 04/29/2008 |
| 7353714 | Method and apparatus for automatic load testing using bi-directional testing The subject invention pertains to a method and apparatus for testing the static load-bearing capacity of a pile. In an embodiment, one or more load devices for applying a test load can be disposed within a pile such that a pile element can be above the load device, ... | 04/08/2008 |
| 7254988 | Method and apparatus for testing pulsatile endurance of a vascular implant A method for testing the pulsatile endurance of a vascular implant 3 comprises placing a resilient insert 4 into the implant and repeatedly expanding and contracting the insert, thereby expanding and contracting the implant. The insert preferably has a... | 08/14/2007 |
| 7143654 | Methods and apparatus for detecting the presence, intensity, trajectory or location of a liquid stream An array of piezoelectric ceramic sensors affixed to a flexible plastic membrane forms a target surface and the signals produced by the sensors are processed to produce an output signal which indicates the location where a liquid stream strikes the target. The senso... | 12/05/2006 |
| 7069792 | Joint sealant adhesion indicator Apparatus for locating adhesive failure of sealant joints. Useful for determination of the quality of sealant joints in structures, especially curtain wall buildings. A substantially constant pressure probe is utilized to displace roughly a middle third of a sealant... | 07/04/2006 |
| 6983660 | Fatigue measurement device and method An apparatus and method for measuring the fatigue strength and fatigue damage of structures and predicting the service life remaining in the structure being tested. The apparatus is a specially designed fatigue gauge that contains breakable ligaments of either varia... | 01/10/2006 |
| 6952959 | Method of designing a heat seal width This invention provides a method of designing a suitable heat seal width which is more resistant to unsealing than conventional heat-sealing, which involves the steps of; (1) heat-sealing a test piece of a sheet to be heat-sealed at a temperature lower than the fusi... | 10/11/2005 |
| 6595068 | Compact hollow cylinder tensile tester A hollow cylindrical tester uses an inflatable membrane to apply hoop stress to a hollow cylindrical sample. The compact device includes a frame that holds a sample around the inflatable membrane. The membrane is preferably inflated via fluid pressure and... | 07/22/2003 |
| 5882929 | Methods and apparatus for the conditioning of cartilage replacement tissue Apparatus and methods are disclosed for maturing a biopolymer tissue construct in vitro prior to use as a replacement construct in vivo as, for example, a graft, implant, or prosthesis. The tissue is seeded with specific cells, exposed to a maturation flu... | 03/16/1999 |
| 5431045 | Device and method for measuring on earth the thrust of thrusters for use in space The equipment for measuring on earth the thrust of thrusters for use in space comprises a balance (1) and a measuring means (11) which is associated with the balance in order to measure the thrust exerted by the thruster (P). The balance (1) is provided w... | 07/11/1995 |
| 5417103 | Method of determining material properties in the earth by measurement of deformations due to subsurface pressure changes This invention relates to a method of determination of the deformation of the surface or subsurface of the earth resulting from an applied pressure change at a selected point, at a selected depth, in the earth, by measuring at least one physical parameter... | 05/23/1995 |
| 5375453 | Assembly for evaluating gasket service life and method for performing the same A method and apparatus for approximating the life of a gasket used in a predetermined environment is provided which allows for the long-term exposure to the environment to be simulated over a shortened period of time. The method and apparatus utilize the ... | 12/27/1994 |
| 4972721 | Dynamic vascular compliance tester A dynamic vascular compliance tester (change in radius with change in pressure) comprises an oscillatorily driven bellows to simulate pulsing a fluid pressure within a test specimen and a method of use thereof. The tester includes a high frequency pressur... | 11/27/1990 |
| 4910997 | Fluctuating stress generating apparatus and method Apparatus for applying a fluctuating stress to, for example, a gable end of a house includes a pressure enclosure. An air compressor is connected to the pressure enclosure via a series of gauged valves whose positions are continuously variable between lim... | 03/27/1990 |
| 4845996 | Test system for caissons and piles A test system for caissons, piles and the like provides an improved way of testing the load bearing capabilities of such inground foundation elements. The test method involves supporting an inertial mass, e.g. of concrete rings, on the upper end of a colu... | 07/11/1989 |
| 4579003 | Instrument for testing earthen samples under triaxial load conditions An instrument for testing earthen samples under triaxial load conditions includes an upwardly extending cylindrical housing with two access windows formed in the side thereof, and a transparent cylindrical sleeve adapted to be slidably received about the ... | 04/01/1986 |
| 4566868 | Pressure source A liquid pressure source, e.g. for use in soil mechanics laboratories, has a piston-cylinder unit driven by a stepper motor: a pressure transducer indicates the liquid pressure and a digital feedback control unit responds to generate stepping pulses to ma... | 01/28/1986 |
| 4272994 | Constant pressure apparatus and method A method and apparatus for maintaining a constant elevated liquid pressure in a small vessel by pressuring with liquid the small vessel and a larger vessel in open communication therewith. The larger vessel, preferably, has a volume of about 20 to about 1... | 06/16/1981 |
| 4075884 | Fracture specimen loading machine A machine that can be used for loading of a slotted specimen for measuring the fracture toughness, fatigue crack growth resistance, or stress corrosion crack growth resistance of that specimen, the machine having a pressure bag maintained in a frame, whic... | 02/28/1978 |
| 4050963 | Method of quenching large-diameter thin-wall metal pipe A method of quenching a large-diameter thin-walled metal pipe includes the steps of moving the metal pipe through a heating zone and passing the pipe through a cooling zone following passage of the pipe through the heating zone. The cooling zone includes ... | 09/27/1977 |
