Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 5024072 | Tumbler pin lock system A tumbler pin lock system comprises a lock mechanism and a key. The lock mechanism has an outer tubular casing mounted to a frame of a computer or similar electrical device. The tubular casing has an eccentric through hole for rotatably receiving a lockin... | 06/18/1991 |
| 5024073 | Bezel lock, key and receiver assembly A lock assembly includes a lock body having a hole longitudinally therethrough, a plunger arranged longitudinally in the hole, a single strong spring coiled around the plunger and arranged longitudinally in the hole inside the lock body for returning the ... | 06/18/1991 |
| 5024074 | Apparatus and method for selectively forming a thickened edge on a plate of formable material In conventional fabrication manufacture the thickness of the steel plates are often determined by the metal section required at the weld joints. The subject apparatus and method overcomes this problem by selectively forming a thickened edge along the edge... | 06/18/1991 |
| 5024075 | Method of deforming two opposite edges of a single workpiece by machining, and apparatus for implementing the method A method of finishing two opposite edges (5, 6) of a single workpiece (1) by machining, the machining giving each edge a desired final shape by pressing the workpiece between a pair of tools (7, 8) having shapes (9, 10) complementary to the desired finish... | 06/18/1991 |
| 5024076 | Tool for forming sheet metal The present invention concerns a method and tools for forming sheet metal, and in particular, a method for making a chase top from a stock rectangular piece of sheet metal. Creasing tools are described that each have a handle member and a creasing wheel s... | 06/18/1991 |
| 5024077 | Method for forming container with profiled bottom A method of forming a container body having a profiled bottom in a continuous operation wherein the body is formed from a blank of material into an inverted cup, the cup is reverse drawn and a preliminary profile is imparted to the bottom of the cup, and ... | 06/18/1991 |
| 5024078 | Magnetic key chain A magnetic key chain which comprises a plastic material in which particles are embedded so that it will adhere to a metal surface such as iron or steel and which in at least one embodiment has a covering sheet on one side and which carries a key ring to w... | 06/18/1991 |
| 5024079 | Test plug for flanged pipes Significant time is wasted in proving the integrity of a weld associated with the welding of a flange onto a pipe. Generally this takes place by bolting the pipe into the circuit and testing the completed circuit. The test plug according to the invention ... | 06/18/1991 |
| 5024080 | Paint viscosity monitoring system and method A system and method for measuring viscosity of a layer of wet paint on a surface by deforming the layer of paint, measuring the response of the deformed layer of paint, and determining the viscosity based on the measured response.... | 06/18/1991 |
| 5024081 | Locating flat spots on rubber wipe rolls A method of testing a resiliently covered roll for surface flat spots involves rotating the roll and applying a film of water with a sponge roller to at least a portion of the length of the rotating roll surface. Then doctoring the rotating surface with a... | 06/18/1991 |
| 5024082 | Engine-start discriminating apparatus for an internal combustion engine An engine-start discriminating apparatus which comprises a cylinder pressure sensor for detecting a cylinder pressure in an internal combustion engine, a combustion parameter operating component for extracting for an arithmetic operation a parameter of co... | 06/18/1991 |
| 5024083 | Terminal flow sensor A thermal flow sensor has a heat-sensitive resistor which is disposed at a predetermined angle relative to the line of stream of a fluid, and which has its heat-sensitive portion disposed on the surface portion of a substrate which is positioned downstrea... | 06/18/1991 |
| 5024084 | Flow meter for liquid doctored through Fourdrinier fabric at wet end of Fourdrinier paper machine A testing device for determining the amount of liquid having been doctored through the Fourdrinier fabric or wire at the wet end of a Fourdrinier-type paper machine. Included is a pick-up for insertion beneath the foil blades of the paper machine, having ... | 06/18/1991 |
| 5024085 | Signal pickup mechanism A magnetic signal pickup mechanism is presented. The mechanism comprises an orbiting mass fixedly coupled to a cyclically repetitively moving element which by moving through its cycle causes the mass to orbit. A relatively tight but slightly moveable wire... | 06/18/1991 |
| 5024086 | Method of measurement of the level of the surface of a metal bath The level of the surface of a bath of molten metal beneath a fluid layer of slag in a metallurgical vessel is measured by a detector which is moved through the slag layer into the metal bath and then withdrawn. To improve accuracy and to avoid the need fo... | 06/18/1991 |
| 5024087 | Acceleration sensor An acceleration sensor includes a tubular casing having one open end closed by a lid of an elastic material. An magnetic member is received within a sealed space defined by the casing and the lid, and a damper liquid fills in the sealed space. The lid is ... | 06/18/1991 |
| 5024088 | Electromagnetic accelerometer An accelerometer for detecting acceleration includes a support, a detection body movable relative to the support upon application of acceleration, a plurality of electromagnets for keeping the detection body floating in the support so that the electromagn... | 06/18/1991 |
| 5024089 | Stress compensated transducer A transducer having compensation for a deflection due to an applied stress. The transducer a support ring (32) having a proof mass (34) cantilevered on a pair of flexures (38) between the magnets (26, 28) of a stator in which the transducer is mounted. De... | 06/18/1991 |
| 5024090 | Loose rock detector A loose rock detector comprises an impact tool for hitting the rock face, sensors for detecting acoustic, rock motion and/or impact force signals generated by movement of the impact tool against the face of the rock, a data processor responsive to the sen... | 06/18/1991 |
| 5024091 | Non-destructive evaluation of structural members Disclosed are testing apparatus and methods for estimating mechanical properties of nonhomogeneous materials, such as lumber and other wood materials and composite materials, particularly elongated slender members. The testing is appropriate for estimatio... | 06/18/1991 |
| 5024092 | Method and apparatus for selective transmission and reflection of sound through a solid A device is disclosed which allows an object to be tuned to an incoming sound wave magnitude and wavelength, such that the sound wave will alternatively be passed therethrough without detectable reflection or be completely reflected. The apparatus is inte... | 06/18/1991 |
| 5024093 | Fan-shape scanning ultrasonic flaw detecting apparatus A fan-shaped scanning flaw detecting apparatus which includes a probe provided with an ultrasonic wave transmitting-and-receiving array transducer arranged along a circular arc and an acoustic lens for converging and converting an ultrasonic beam transmit... | 06/18/1991 |
| 5024094 | Ultrasonic imaging system of bonding zone In a system for irradiating an ultrasonic beam and imaging the insides of plate-shaped and layer-shaped samples, by using the difference between the sound velocities of a liquid medium and a sample from an ultrasonic transducer to the surface of the sampl... | 06/18/1991 |
| 5024095 | Diagnostic locator for mechanically malfunctioning electronic circuitry A method of diagnosis utilizing a diagnostic locator for detecting sources of electronic circuit malfunction caused by fractured solder connections or other kinetically locatable electronic circuit malfunctions comprises a diagnostic locator using kinetic... | 06/18/1991 |
| 5024096 | Composite slip table of dissimilar materials for damping longitudinal modes A vibration slip table for use in a vibration testing apparatus. The table s comprised of at least three composite layers of material; a first metal layer, a second damping layer, and a third layer having a high acoustic velocity relative to the first laye... | 06/18/1991 |
| 5024097 | Pressure sensor comprising a silicon body A pressure sensor comprising a silicon body (1) which is arranged on a substrate (2). The silicon body (1) comprises a cavity (4) in the form of a blind hole, or enclosed chamber which thus forms a diaphragm (5). On the outer surface thereof there is arra... | 06/18/1991 |
| 5024098 | Pressure sensor useable in oil wells A pressure sensor of the present invention can perform pressure measurements under very severe mechanical and thermal conditions. It comprises a cell carrying a strain-measuring circuit. The cell is placed inside a body and is put into contact with the pr... | 06/18/1991 |
| 5024099 | Pressure transducer with flow-through measurement capability A transducer measures the pressure of a fluid within a hollow conduit, typically one with a circular cross-section, having a central region that is deformed to a non-circular cross-section. This non-circular portion of the conduit displaces radially and r... | 06/18/1991 |
| 5024100 | Automatic transducer selection system for pressure measurement An automatic transducer selection system for fluid pressure measurement functions by using two or more transducers with different ranges of accuracy and also by incorporating comparator circuitry which automatically selects the transducer reading nearer t... | 06/18/1991 |
| 5024101 | Power source circuit and bridge type measuring device with output compensating circuit utilizing the same Provided is a constant voltage source for providing a reference constant voltage at a predetermined temperature, the temperature characteristics of an output of the constant voltage source being adjustable, and also provided is a bridge type measuring dev... | 06/18/1991 |
| 5024102 | Device for testing trailer couplings under loading conditions resembling those occurring in use, preferably with inclusion of the construction for fixing the trailer coupling The invention provides a device for testing trailer couplings which transmit a traction to a trailer by way of a trailer coupling ring on the drawbar of the trailer, the test being carried out under loading conditions similar to those occurring in practic... | 06/18/1991 |
| 5024103 | Surface instability detection apparatus A compression test apparatus for geomaterial, such as rock or concrete, samples that is designed to provide measurements of a stress displacement characteristics of the failure zone. A geomaterial formed into a specimen comprising a right rectangular pris... | 06/18/1991 |
| 5024104 | Combined output and drive circuit for a mass flow transducer Amplitude-balanced input signals (I1 and I2) from two pick-up coils spaced along a vibrating tube mass flow transducer are used to form sum and difference signals (S and D). These are multiplied by quadrature and in-phase signals (Q ... | 06/18/1991 |
| 5024105 | Viscosity-insensitive variable-area flowmeter The differential-pressure-sensing and variable-area-occluding functions of a variable-area flowmeter, or rotameter, are performed by separate, but mechanically connected, means. A housing defines a channel for flowing fluid from an upstream to a downstrea... | 06/18/1991 |
| 5024106 | Contact system normal force gage A force gage (10) for measuring normal forces (F) is comprised of a silicon element (12) having diffused in an edge surface (14) thereof a piezoresistive sensor area (16) which changes resistance responsive to applied stress caused by (F) acting in compre... | 06/18/1991 |
| 5024107 | Pressure or force sensor having an axially symmetrical pressure or force-receiving circular plate spring The invention relates to a pressure or force sensor having an axially symmetrical, force-receiving circular plate spring which has a reinforced edge region (5) which serves as a support on a carrier, said spring being provided with strain gauges. To preve... | 06/18/1991 |
| 5024108 | Sample analyzer A sample analyzer to detect elements in a gaseous residue generated in an extraction furnace. The sample analyzer introduces the gaseous residue into a detector to be analyzed. The sample analyzer employs a buffer vessel having a variable internal capacit... | 06/18/1991 |
| 5024109 | Method and apparatus for performing hydrostatic correction in a pipette This invention provides a method and apparatus for correcting for the hydrostatic dead volume error which may occur in a pipette system and may also include method and apparatus for correcting for a lost fluid volume error. The technique involves determin... | 06/18/1991 |
| 5024110 | Cell for sampling and storing fluid deposits The rear face of the piston (7) and the corresponding inner face of the pump body (1,2,3,4) are complementarily shaped so as to make the volume of the rear chamber (31) of the cell as small as possible, and, when the cell is in the storing position, the u... | 06/18/1991 |
| 5024111 | Adjustment of zero spring rate suspensions An adjustment system for a suspension system having the property of providing a zero spring rate response to limited vertical excursions from a reference level, the suspension system including a load suspension spring supported from a load spring anchor. ... | 06/18/1991 |
