Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7523662 | Process meter The process meter comprises a sensor that can be mounted in a wall of a vessel for holding or conveying a process medium, and a meter-electronics case mechanically coupled to the sensor. In operation, the electronics case is at least intermittently subjected to vibr... | 04/28/2009 |
| 7520168 | Vibration reduction for head gimbal assembly testing An assembly for testing a head gimbal assembly (HGA) comprises a support platform configured to hold a base plate of the HGA. A base plate of the HGA is mounted on the support platform. The assembly further comprises a channel with an opening adjacent to a tail of t... | 04/21/2009 |
| 7284455 | Electronic environment sensing instrument having an analog indicator An electronic environment sensing instrument having an analog indicator has a casing having a front panel with a scale, an electronic sensing and driving assembly mounted in the casing, a needle and a DC power supply. The electronic driving indicator assembly has a ... | 10/23/2007 |
| 7268696 | Directional signal and noise sensors for borehole electromagnetic telemetry system An electromagnetic borehole telemetry system providing improved signal to noise ratio. Adaptive filters use noise channels as references to remove noise from the signal channel. Directional detectors provide a signal channel with reduced noise content and improved n... | 09/11/2007 |
| 7204782 | Axle assembly An axle assembly including a housing, a tire supporting hub mounted for rotation with respect to the housing, a drive axle and a planetary unit for coupling the drive axle to the tire supporting hub. The planetary unit includes a sun gear, at least one planet gear a... | 04/17/2007 |
| 7017411 | Apparatus with selected fill gas An inertial sensor has an interior filled with a relatively low viscosity fill gas. To that end, the inertial sensor has a housing forming the noted interior, and a movable component within the interior. The inertial sensor also has the noted fill gas within the int... | 03/28/2006 |
| 6925883 | Non resonating close coupled probe A probe includes a first tube having a first end positioned at a measurement location, and a second end; a second tube having a first end, and a second end; a connector having a transducer for connecting the second end of the first tube to the second end of the seco... | 08/09/2005 |
| 6915660 | Method and system for liquefaction monitoring A method and system for liquefaction monitoring of a gas in a gas piping system in which pressure and temperature information about the gas is gathered and the liquefaction status of the gas is determined and reported. ... | 07/12/2005 |
| 6679122 | Pressure gauge having a dampener mechanism with attachable housing A dampening apparatus for a pressure gauge in which a housing secured to the amplifier of the pressure gauge encircles the pointer shaft in a close but loose fit relation so as to define a controlled clearance packed with a high viscosity dampening agent ... | 01/20/2004 |
| 6304072 | Pointer resetting mechanism for a magnet disc operated gauge A pointer resetting mechanism for a magnet disc operated gauge mainly adapted for use in vehicles is made up of a coil spring particularly housed together with a floatable magnet disc for protection in a sealed shelter case and at least an auxiliary magne... | 10/16/2001 |
| 6190049 | Fluid thrust bearing for indicating instruments and the like The present invention is a novel fluid thrust bearing system and method for assembling the same. When used in an indicating instrument, the fluid thrust bearing of the present invention reduces the number of necessary parts and simplifies assembly when co... | 02/20/2001 |
| 5703290 | Bobbin assembly for a vehicle instrument gauge A bobbin assembly for a vehicle instrument gauge is provided. The bobbin assembly includes an upper and a lower bobbin, which together define a chamber therebetween and an axis of rotation therethrough. The bobbin assembly also includes a permanent magnet... | 12/30/1997 |
| 5587522 | Multiple-part and/or supported gas-containing vessel to establish desired heat flux Vessel, useful in heat transmission regulation, includes a sealable, outer housing and a sample compartment generally enclosed therein such that a hollow portion between at least a part of the housing and compartment is present. The hollow compartment can... | 12/24/1996 |
| 5404759 | Acoustically quiet, passive load for testing low-speed motors The load absorbing device is housed in a fluid filled housing for cooling d vibration damping purposes. The device includes a rotating disc coupled to the motor output shaft, and brake calipers for engaging the disc periphery to incrementally increase the... | 04/11/1995 |
| 5320169 | Gauge carrier A gauge carrier for absorbing longitudinal and radial shock forces on a shock sensitive gauge in a gauge housing where the gauge is insertable and retrievable with a unit assembly. The gauge or gauges are coupled to a longitudinal shock absorber comprised... | 06/14/1994 |
| 5269185 | Sensor for measuring a physical parameter A sensor for measuring a physical parameter is described having a frame, at least one support which is resiliently flexible under the influence of a physical parameter and which is integral with the frame, and at least one resonator integral with the supp... | 12/14/1993 |
| 5257300 | Digital anti-slosh system The input voltage from a fuel tank level sender is processed by an anti-slosh circuit which has a short time constant during a fast acquire operation and a longer time constant during normal operation. The slew rate of the output voltage provided to a gau... | 10/26/1993 |
| 5239866 | Sensor for measuring a physical parameter A measurement sensor is disclosed having a frame, a support which is resiliently flexible under the influence of a physical parameter and is fixed to the frame, a mass connected to the support, a housing which is formed by the frame and surrounds the mass... | 08/31/1993 |
| 5117695 | Vibration attenuation assembly The present invention features a vibration attenuation assembly designed for the protection of single axis instruments such as accelerometers. The assembly includes an inner cylinder housing one or more single axis accelerometers co-aligned with a princip... | 06/02/1992 |
| 4879906 | Vibration damped mounting for extensometer system An extensometer support system having vibration damping mountings for parts that have substantial mass and which are subjected to external vibrations. Such parts include counterweights for counterbalancing the extensometer and also the mounting for an ext... | 11/14/1989 |
| 4821571 | Damping device and a device for measuring the level of fuel in a motor vehicle fuel tank including such a damping device The present invention relates to a damping device of the type comprising a housing (40) defining a sealed chamber (42) containing a viscous damping fluid such as silicone and receiving a blade capable of displacement relative to the housing. In accordance... | 04/18/1989 |
| 4760736 | On board indicator for motor vehicles An on board indicator for vehicles is provided, including a sensor detecting a physical magnitude to be indicated, connected to a display device through a low pass filter whose cut off frequency is increased for a given time after switch on of the vehicle... | 08/02/1988 |
| 4755063 | Temperature compensated data recorder A recorder is disclosed for producing a continuous data record and comprises a case, a strip chart which is wound from a chart storage compartment onto a spring-given take-up spool and a speed-reducing governor comprising a paddle wheel, immersed in visco... | 07/05/1988 |
| 4679431 | Probe assemblies including such mounts A capacitance fuel-gauging probe is supported at its upper end in a fuel tank by a stress-relieving mount. The mount includes a disc assembly formed of two identical steel discs each with a central aperture. The discs are joined together at their respecti... | 07/14/1987 |
| 4653190 | Displacement transducer accommodating extreme environmental conditions A displacement transducer for accurately detecting both linear and angular displacements and velocities, between objects moving relative to one another. The displacement transducer is structured to accurately operate under large gravitational acceleration... | 03/31/1987 |
| 4627285 | Pointer for liquid filled gauges An improved liquid filled gauge for measuring the temperature or pressure of a fluid. Gauge temperature or pressure readings are indicated by a pointer configured to produce substantial resistance to motion during pointer rotation. The preferred embodimen... | 12/09/1986 |
| 4525081 | Vibration dampened beam A vibration dampening system comprises a beam 28 which has an unsupported length and is affixed to a supporting structure 12. The supporting structure 12 is subject to vibrations which may be transmitted to the beam 28. A sheath 42 is rigidly mounted to t... | 06/25/1985 |
| 4476723 | Density sensor A density sensor includes a stationary housing (12) and a reciprocating body (22) with a float (26) attached thereto to provide a buoyant force. The reciprocating body (22) is connected to a piston (32) by a reciprocating rod (34). The piston (32) is oper... | 10/16/1984 |
| 4454757 | Wind speed and direction measuring instrument A portable, pocket sized instrument for measuring wind speed and indicating wind direction wherein a multiple number of vanes of varying size and spacing are radially and orthogonally fixed to a disc and wherein the force of the wind against the vanes cau... | 06/19/1984 |
| 4328639 | Viscous fluid damping system A damping system for damping relative rotation of a pair of members having confronting surfaces spaced apart by a primary gap or zone of capillary dimension, a viscous damping fluid in the gap contacting the confronting surfaces of said members and held i... | 05/11/1982 |
| 4310841 | Signal handling apparatus Signal-processing apparatus for use with industrial instrumentation systems and the like, and comprising a memory to maintain a signal level for long time periods without drift. An input signal level is translated into the positioning of a movable member,... | 01/12/1982 |
| 4299253 | Pulsation dampener A pulsation dampener providing high attenuation in a narrow quiet band or frequency. The pulsation dampener is tuned to provide a reflected wave 180° out of phase in the narrow band to cancel the undesired pulsation. A silicone polymer contained by a dia... | 11/10/1981 |
| 4265305 | Mounting and shock absorber assembly for borehole telemetry apparatus A mounting assembly and shock absorber are presented for mounting and shock absorption for the transmitter and sensor elements of a mud pulse telemetry system. The shock absorbing apparatus for the mud pulse transmitter is entirely located at one end of t... | 05/05/1981 |
| 4222278 | Gyro apparatus using viscous damping device A viscous damping device positioned between a gimbal shaft and a bearing sleeve supporting the gimbal shaft is provided for damping a gyro apparatus in a rotational direction. The viscous damping device comprises first and second rings fixed to an outer p... | 09/16/1980 |
| 4222029 | Vibration isolator A vibration isolator is connected in line between an air intake tube (22) of an engine (14) and a pressure-responsive switch (30) to isolate the pressure-responsive switch from vibration during operation of the engine. The isolator includes a pair of meta... | 09/09/1980 |
| 4213415 | Antirattle structure for a transmission ratio indicator assembly A transmission ratio indicator assembly has a linear input member and an output member that moves on a constant radius. The input member includes a slide member guided on a flat surface, which slide member has an arm extending normal to the flat surface a... | 07/22/1980 |
| 4199989 | Cold damping of mechanical structures Methods and apparatus are disclosed for substantially reducing the effect of the inherent transducer capacitance in a transducer-coupled electromechanical system which is subject to vibrational movement. First and second electromechanical transducers, mec... | 04/29/1980 |
| 4198863 | Electromagnetic torsional stiffness element An electromagnetic torsion stiffness arrangement with integrated auxiliary elements in which a magnetic field exerts restoring forces on a current-carrying conductor when moved from its rest position. The magnitude of the restoring forces are dependent on... | 04/22/1980 |
| 4159502 | Electronic compensation for temperature variation of gyroscope damping A signal compensator is combined with a second order system, for example, a fluid damped rate gyroscope, which produces a signal in response to the movements of a damped member for providing an output signal which is indicative of the input to the second ... | 06/26/1979 |
| 4140968 | Damping of electrical measuring instruments An improvement to an electrical measuring instrument having a rotary moving part capable of longitudinal movement in relation to the remainder of the instrument and including a damping arrangement comprising co-operating pads fitted respectively to the mo... | 02/20/1979 |
