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| Patent # | Description |
|---|---|
| US-5,581,452 |
Pulse width modulation inverter current detection method A current detection method for current detection of an output of a PWM inverter utilitizes current sampling at the timings of two zero vectors of the PWM... |
| US-5,581,451 |
Circuit for improving the power efficiency of an AC/DC converter A power circuit including an input circuit for receiving an AC power supply voltage from an AC power line, a primary circuit rectifier coupled to the input... |
| US-5,581,450 |
Feedback control loop in a power supply circuit A feedback loop in a power supply operating in a switched mode has a dual response controller which provides slow response to superimposed ripple on the power... |
| US-5,581,449 |
Plug-in power supply A plug-in transformer power supply having magnetic and electronic circuits is optimized for output power while complying with UL Class 2 limits. In an... |
| US-5,581,448 |
Display lighting system for walls A display lighting system for walls (10) is disclosed which have a housing insertable into the ceiling of a room near the wall desired to be washed by the light... |
| US-5,581,447 |
Solar skylight apparatus A solar skylight is provided for collecting sunlight and dispersing the light within a building without the necessity for any roof penetrations of the building.... |
| US-5,581,446 |
Housing structure of electric appliance and disassembling method thereof A housing structure of an electric appliance has an upper case and a lower case. The upper case is provided with a plurality of logic holding portions arranged... |
| US-5,581,445 |
Plastic integrated circuit card with reinforcement structure for
protecting integrated circuit module A reinforcement structure to protect an integrated circuit module located within a smart card. The reinforcement structure, which has a modulus of elasticity... |
| US-5,581,444 |
Device and method for enhancing thermal and high frequency performance
of integrated circuit packages A method and mount for a high frequency IC that provides a low inductance path for a high frequency current from the IC to the exterior of a package for the IC... |
| US-5,581,443 |
Structure for cooling a circuit module having a circuit board and a
heat-generating IC chip mounted on the... A portable electronic apparatus comprising a housing having a bottom, a metal frame provided in the housing, a circuit board supported by the frame, and an IC... |
| US-5,581,442 |
Spring clip for clamping a heat sink module to an electronic module A spring clip for clamping a heat sink module to an electronic module which has a pair of opposite side edge surfaces and a pair of spaced projections which... |
| US-5,581,441 |
Electrically-operated heat exchanger release mechanism A heat operated release mechanism. The release mechanism is controllable to allow a heat exchanger to be firmly held in place over a heat producing element and... |
| US-5,581,440 |
Rotatable bushing for reducing bending stress in electrical cable A rotatable bushing for reducing bending fatigue on a flat cable between a display screen cover and a base of a portable computer comprises an elongate... |
| US-5,581,439 |
Gas insulated switchgear The gas insulated switchgear includes a gas insulated double main bus, bus sectioning and bus tieing gas insulated switchgear units, a main bus potential... |
| US-5,581,438 |
Supercapacitor having electrodes with non-activated carbon fibers There is disclosed a double-layer capacitor having electrodes formed of a current collector positioned against a non-woven web of non-activated carbon fibers... |
| US-5,581,437 |
Power capacitor A power capacitor including at least one capacitive winding, of self-healing type, located in a case made of plastic material and coated in a polymerizable resin... |
| US-5,581,436 |
High-dielectric-constant material electrodes comprising thin platinum
layers A preferred embodiment of this invention comprises a thin unreactive film (e.g. platinum 36) contacting a high-dielectric-constant material (e.g. barium... |
| US-5,581,435 |
Polyester film capacitor element A film capacitor element produced from a metallized polyester film is described. In the metallized polyester film, the adhesion between a vapor-deposited metal... |
| US-5,581,434 |
Apparatus including a transient voltage suppressor An apparatus including at least one input terminal for electrical connection to an external conductor, a ground terminal and a protection circuit connected... |
| US-5,581,433 |
Electronic circuit breaker A solid state circuit breaker for use in electronic devices which may be connected to an active computer bus. In one embodiment the solid state circuit breaker... |
| US-5,581,432 |
Clamp circuit and method for identifying a safe operating area A clamp circuit (10) for protecting a MOSFET (12) from destructive voltages and currents includes a clamping element (30), a current switch (27), a bond pad... |
| US-5,581,431 |
Playback/recording units with single power source selectively powering
all operating functions A playback/recording apparatus, which operates with a recording tape medium, having a playback/recording head and tape driving capstan/pinch rollers mounted in... |
| US-5,581,430 |
Container having at least one viewing window, in particular a tape
cassette, and viewing window arrangement... A container having a viewing window essentially comprises a housing with a window which can be fastened to it and is designed in one part as a transparent part... |
| US-5,581,429 |
Thin-film magnetic head having improved magnetic pole structure The thin-film magnetic head comprises a gap layer, coil layer, insulating layer, and top magnetic pole layer stacked in sequence on the bottom magnetic pole... |
| US-5,581,428 |
Mounting clip with back-up overvoltage protection A mounting clip with back-up overvoltage protection which is adapted to receive an overvoltage protection device has dielectric disposed between one terminal of... |
| US-5,581,427 |
Peak enhanced magnetoresistive read transducer An MR read transducer is provided which has a central region located between a pair of end regions. The central region and the pair of end regions extend along a... |
| US-5,581,426 |
Upper head drum assembly including at least one nut cap An upper drum assembly for use in a video cassette recorder includes an upper drum having an inner part with a top surface and an outer side surface with one or... |
| US-5,581,425 |
Head drum for a magnetic recording/reproducing apparatus A head drum, for a magnetic recording/reproducing apparatus, includes a hemispheric hydraulic bearing capable of reducing frictional resistances created due to... |
| US-5,581,424 |
Magnetic crash stop and latch in a disc drive A magnetic crash stop and latch for limiting the motion of a transducer positioner assembly within a disc drive. The disc drive system has a transducer... |
| US-5,581,423 |
Disk driving motor and chcuking mechanism for disk drive apparatus A disk drive apparatus includes a spindle for engagement with a central hole of a disk hub of a magnetic disk, a rotary member fixed to the spindle, a chucking... |
| US-5,581,422 |
Actuator with moveable coil and recording apparatus A movable coil-type actuator including (a) a permanent magnet assembly constituted by a flat permanent magnet and a lower yoke element made of ferromagnetic... |
| US-5,581,421 |
Method for driving stepping motor for head seek in disk drive device In a method for driving a head-seek stepping motor of a disk drive device of the kind performing a head seek to move a recording or reproducing head in a radial... |
| US-5,581,420 |
Method and system for determining a radial positioning valve used for
writing tracks at a desired track pitch A technique for writing a servo-pattern on a storage medium located in a recording device having an internal recording head. A timing pattern is generated on the... |
| US-5,581,419 |
Magnetic tape drive for driving magnetic tape having leader block at
leading end A magnetic tape drive for driving a magnetic tape stored in a cartridge for writing and reading data as an external storage device of a computer, etc., and... |
| US-5,581,418 |
Magnetic disk drive unit capable of determining data region position of
data region that does not include... A magnetic disk drive unit using a data surface servo system includes: at least one magnetic disk having a data surface, wherein a region in which servo... |
| US-5,581,417 |
Apparatus and method for anhysteretically recording from master drum to
slave web A ported vacuum drum (20, 56-98) is provided on its exterior cylindrical surface (22) with a master layer (24) of magnetic recording medium in position to... |
| US-5,581,416 |
Polygonal mirror, and manufacturing process and mold thereof A resin polygonal mirror having reflective facets each of which is made by injecting resin from a plurality of pin point gates or a single film gate. A core of... |
| US-5,581,415 |
Device for inserting optical and mechanical components into a mounting
sleeve The invention relates to a device for inserting optical and mechanical components into mounting sleeves. The components are introduced upward from below into the... |
| US-5,581,414 |
Microlens assemblies and couplers Disclosed is a lens assembly having a first cylindrical microlens having a first microlens longitudinal axis. A flat sheet of material having a hole therein is... |
| US-5,581,413 |
Optical guide for increasing printer image width An optical guide for horizontally aligning two vertically stacked images generated by one or two SLMs. The optical guide has a channel separator that directs... |
| US-5,581,412 |
Flexible printed circuit board supporting structure of lens barrel A flexible printed circuit board supporting structure for mounting a flexible printed circuit board in a restricted space without using an exclusive member to... |
| US-5,581,411 |
Guide device for zoom lens barrel A guide device for a zoom lens barrel which includes a movable cylinder linearly guided in a direction of the optical axis of a zoom lens, a pinion rotatably... |
| US-5,581,410 |
Resin-coupled optical element and method of production A resin-coupled lens has a resin layer on at least one surface of the lens and has a light-shielding membrane, wherein the edge surface of the outermost... |
| US-5,581,409 |
Imaging system to combine disparate fields of view A lens system is provided which has a plurality of lens systems each having a Dove prism and a lens for imaging the light received from its Dove prism on the... |
| US-5,581,408 |
Method and apparatus for deflecting an optical beam A method and apparatus for inducing deflections in a collimated optical beam using a microptic multiplet (MOM) optical system wherein a first microptic lens... |
| US-5,581,407 |
Permeable screen and its manufacturing method A permeable screen possesses superior brightness, high contrast, wide view angle, excellent contrast to external light, superior clearness, and less reflection... |
| US-5,581,406 |
Anti-glare rearview mirror system The mirror system has devices for adjusting the reflectivities of the interior and exterior rearview mirrors to different values to correct the driver's... |
| US-5,581,405 |
Hybrid refractive/diffractive achromatic camera lens and camera using
such A hybrid refractive and diffractive achromatic lens suited for single-use or inexpensive single-lens cameras operating in visible spectral range. The lens... |
| US-5,581,404 |
Image stabilizing apparatus Disclosed is an image stabilizing apparatus for correcting image blur by driving at least one of a plurality of lens units constituting an objective lens such... |
| US-5,581,403 |
Beam shaping and beam splitting device and optical head comprising the
same A beam shaping and beam splitting device for converting a cross sectional shape of a polarized parallel incident light beam into a light beam having a corrected... |
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