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| Number | Title | Issue Date |
| 5471873 | Densimeter A density measuring device having a float with a marker provided therein that is connected by a pair of springs to each of the two supports which are on opposite sides of the float along a guide. A sonic waveguide arrangement is provided extending along t... | 12/05/1995 |
| 5394071 | Control network with on-line iteration and adaptive filter A feedback control system modifies a drive signal to a plant which provides an achieved response signal in response to the drive signal. A first summing element provides a response error signal representing the difference between a desired response signal... | 02/28/1995 |
| 5253522 | Apparatus for determining fluid level and fluid density A density measuring device having a float with a marker provided therein that is connected by a pair of springs to each of the two supports which are on opposite sides of the float along a guide. A sonic waveguide arrangement is provided extending along t... | 10/19/1993 |
| 5241856 | Flexible web tire loading on tire coupled road simulators A road simulator for testing components of automobiles using a wheel assembly, including a tire that is to be loaded by simulation of actual road forces. A low mass flexible web harness is placed over the tire and has web extensions loaded in tension in a... | 09/07/1993 |
| 5136884 | Magnetic sight gage sensor A magnetic sight gage sensor comprises a sensor for determining the liquid level in a process vessel utilizing a magnetic float on the interior of a tube. The tube is connected at different levels to a process vessel and contains a liquid that is maintain... | 08/11/1992 |
| 5119569 | Multiple gage length extensometer An extensometer for measuring strain in a specimen on which the extensometer is mounted which has two arms joined together at first ends, and with specimen engaging knife edges at the second ends. The knife edges will engage a specimen at spaced locations... | 06/09/1992 |
| 5115195 | System and method for measuring the absolute position of one body which is constrained to move with respect to another body A system and method for measuring the absolute position of one body which is constrained to move with respect to another body includes a plurality of magnetic identification units, which are adapted to be mounted in a predetermined absolute position on a ... | 05/19/1992 |
| 5070485 | Low power magnetostrictive sensor A magnetostrictive linear position transducer generating a 4-20 ma output in response to the position of a position indicating magnet. System resolution is enhanced by averaging in the analogue domain, a digitally developed position location signal.... | 12/03/1991 |
| 5068779 | Degree of freedom digital control system for a hydraulic press A digital computer-based degree of freedom (DOF) control system for driving a moving ram of a hydraulic press about a plurality of degrees of freedom as a function of a preestablished motion control program. Actuators responsive to actuator commands drive... | 11/26/1991 |
| 5068813 | Phased digital filtering in multichannel environment Parallel multistage, multirate digital filters are executed by a digital signal processor for signals on a plurality of channels. Parallel signals are converted from a first sampling frequency to a second sampling frequency by applying the signal from eac... | 11/26/1991 |
| 4939457 | Flexible tube sonic waveguide for determining liquid level A sonic delay line assembly suitable for shipping in coiled form allowing for expedited installation, particularly in liquid storage tanks. The sonic delay line comprises a sonic waveguide made of solid wire, which also serves as an electrical pulse condu... | 07/03/1990 |
| 4794540 | Iterative spline function controlled positioning mechanism An iterative spline function controlled positioning mechanism such as a machine tool. A movable element of the machine tool is driven about a plurality of axes under computer control along a path formed by a plurality of sections. Each of the path section... | 12/27/1988 |
| 4757775 | Chain stitching apparatus Apparatus for reinforcing or attaching composite structural materials by chain-stitching. A reciprocating head is powered to alternate between outward and return motions. A needle is mounted for outward and return movement with the head, the needle having... | 07/19/1988 |
| 4754906 | System for manufacturing connecting rods A two part tool fits into the crankshaft bore of a partially manufactured connecting rod for an internal combustion engine and expands the bore to break the bore housing into two pieces, one of which comprises a bearing cap to permit installation of the r... | 07/05/1988 |
| 4598420 | Optical grid analyzer system for automatically determining strain in deformed sheet metal An optical grid analyzer automatically determines strain in sheet metal during or following a forming operation by measuring the change in radius of open circles which are stretched into ellipse patterns as a result of the forming operation. The system in... | 07/01/1986 |
| 4528542 | Waterproof strain gage element system A strain gage element system includes a spring flexure member on which strain gages of convention design are mounted, and a heat shrinkable waterproof tube that is placed over the gage and the support and shrunk into place. The spring flexure member is fo... | 07/09/1985 |
| 4475403 | Device to preload loading connections A device to permit easily preloading a grip used in specimen testing by providing load carrying links and means for stressing the links to a load level higher than that encountered during the normal loading of the grip, and providing mechanical compressiv... | 10/09/1984 |
| 4344324 | Flat belt tire tester The flat belt tire tester which permits mounting a wheel and tire to be tested about an axis positioned above a flat belt, and has framework and controls for lowering the tire into contact with the belt under desired loads, using desired adjustments for c... | 08/17/1982 |
| 4238954 | Flat belt tire tester The flat belt tire tester which permits mounting a wheel and tire to be tested about an axis positioned above a flat belt, and has framework and controls for lowering the tire into contact with the belt under desired loads, using desired adjustments for c... | 12/16/1980 |
| 4003246 | Specimen crack stress intensity control loop for test device A test system for testing specimens to determine crack propagation utilizing a factor relating to stress intensity at the end of the crack as a control parameter for the loading means.... | 01/18/1977 |
| 3994540 | Pressure balanced bearing with external height control valve A pressure balance bearing providing a hydrostatic bearing film, which is connected to maintain a load or device in a constant position in relation to a reference or support surface. Several support bearings are plumbed together so that there may be cross... | 11/30/1976 |
| 3992978 | Fluid motor and fluid control means therefore A pressure balanced hydrostatic slip bearing as shown for use in guiding and restraining a test table which is shaken in longitudinal direction to vibrate or shake test objects, and also which may be shaken in vertical direction. The slip bearing controls... | 11/23/1976 |
| 3963161 | Sheet feeder for cupping press A reciprocating sheet feeder for feeding sheet material into a press, such as a deep draw cupping press. The sheet feeder comprises a rocking or pivoting framework that has gripper means thereon for gripping the edges of the sheet to be fed and when the f... | 06/15/1976 |
| 3940975 | Extensometer support A support for use with diametral and other types of extensometers to support the weight of the extensometer and also permit the extensometer to move with the specimen in its translational axes without substantial restraint, that is, up, down and in all di... | 03/02/1976 |
