Quotables
"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6527201 | Integrated color selecting and blending system for airbrushes A color selection mechanism for an integrated color selecting and blending system utilizes a disc having a flat surface with an axial projection therefrom for connection to an airbrush in order to supply selected color paint under regulated air pressure f... | 03/04/2003 |
| 6511521 | Purifier of hydrogen from reformer for fuel cell Contaiminated hydrogen gas from a catalytic steam reformer is purified by passing it through a membrane assembly having a metallic membrane sealed between two tubular stainless steel members having perforations (or being formed as screen or mesh) and havi... | 01/28/2003 |
| 6462962 | Lossless switching DC-to-DC converter A new lossless switching DC-to-DC converter with novel lossless switching time control for up to four controllable switches, with each switch meeting the specific current-voltage switching characteristics, operates at ultra high efficiency in a very compa... | 10/08/2002 |
| 6450809 | Vertex dental model articulator An improved ball-and-socket joint for use with dental model articulators of a vertex type comprising two brackets hinged together at one end and each connected at the other end by a ball-and-socket joint to a separate one of two stone plates bearing denta... | 09/17/2002 |
| 6400579 | Lossless switching DC to DC converter with DC transformer Soft switching DC-to-DC converter operates at record high efficiency despite its small size and weight and ultra high overload current capability of several times the nominal load current. Such performance is made possible by use of unique magnetic and sw... | 06/04/2002 |
| 6396931 | Electronic stethoscope with diagnostic capability A self-contained, hand-held electronic stethoscope including built-in chestpiece, speaker and visual monitor, includes a memory containing prerecorded heart and lung sounds along with a brief description of the malady producing the sounds so that the tech... | 05/28/2002 |
| 6388896 | Lossless switching converter with DC transformer A new switching converter operates at record high efficiency despite its small size and light weight and enables ultra high overload current capability owing to two novel methods: new Lossless Switching method eliminates switching losses by use of a preci... | 05/14/2002 |
| 6352792 | Portable congeneration fuel-cell power generator for recreational vehicles A steam reformer for producing H2 from a low pressure hydrocarbon gas (preferably propane) is comprised of a short and narrow cylinder, loosely packed with pelletized catalyst, into which cylinder the low-pressure gas is drawn in by the high-pr... | 03/05/2002 |
| 6350940 | Fretted/fretless stringed musical instrument A stringed instrument intended to be alternately played in a fretted mode or an unfretted mode by raising a separate fingerboard to the tops of the frets for the unfretted mode and lowering it for the fretted mode. A pair of meshed rack-and-pinion assembl... | 02/26/2002 |
| 6304460 | Switching DC-to-DC converter utilizing a soft switching technique Soft switching DC-to-DC converter achieves simultaneously ultra high efficiency and very small size owing to a new magnetic circuit structure and a corresponding novel converter circuit configuration with special properties. Unique magnetic design also pr... | 10/16/2001 |
| 6279611 | Apparatus for generating microbubbles while mixing an additive fluid with a mainstream liquid A unitary, self-contained apparatus for generating microbubbles using a pipe section with a constriction device for producing a venturi effect to cause a mainstream liquid flowing under pressure in the pipe section to draw a column of additive fluid into ... | 08/28/2001 |
| 6116623 | Dual cylinder cart with firewall divider A hand cart for transporting two cylinders, one with oxygen and the other with a liquified fuel gas, used in welding or metal cutting is provided with a firewall divider between the cylinders to protect the oxygen cylinders from a risk of rising cylinder ... | 09/12/2000 |
| 6099255 | Fluid power storage device A fluid power storage device is provided in which, the prime mover directly or through a slow-down gear train winds up a spring device having a latch attached therein. The spring device can be a spiral spring or simply a rubber band. When the stored up en... | 08/08/2000 |
| 6061850 | Portable platform for beach umbrella adapted to carry pillow and other objects A portable platform for carrying to the beach a beach umbrella, umbrella support pole and pillow, all VELCRO fastened to the platform which serves to keep the pillow off the sand and to provide a cup holder and/or a box to secure small items, such as car ... | 05/16/2000 |
| 6008589 | Single-switch, high power factor, ac-to-ac power converters A single-switch ac-to-ac converters for driving ac loads which are particularly suitable for gas discharge lamp ballast applications based upon integration of automatic current shapers and converters that resemble a class-E converter, both parts sharing a... | 12/28/1999 |
| 5969484 | Electronic ballast A discontinuous conduction mode (DCM) electronic ballast topology is presented which drives the lamp with line frequency voltage and current, just like a magnetic ballast. However, compared to magnetic ballast, its weight is substantially reduced due to o... | 10/19/1999 |
| 5910053 | Golf-swing practice device A golf-swing practice device is disclosed as a vinyl plastic sheet imprinted with guide marks, namely a plan view of a golf-swing practice device in accordance with the present invention with four marks, namely an arrow to be aligned with a target, a bar ... | 06/08/1999 |
| 5819739 | Method and apparatus for contravention of the transfer of pathogenic organisms between patients via an inflatable cuff used for arterial blood pressure measurement Barriers for contravention of the transfer of pathogenic organisms from one patient to another through an inflatable cuff comprised of a cuff and a bladder of a sphygmomanometer are supplied on a sterile roll of synthetic polymer segmented by transverse p... | 10/13/1998 |
| 5815380 | Switching converter with open-loop primary side regulation The isolated, multiple output, switching converter is created with a number of unique performance characteristics. The converter operates in continuous inductor current mode (CICM) of operation for all load currents from no load to full load on all output... | 09/29/1998 |
| 5803522 | Recyclable bag-handle grip A disposable bag-handle grip is die cut from a pliable sheet of recyclable cardboard with two tab cuts along lines parallel to one end of the sheet and two arcuate cuts near the other end of the sheet to receive the tabs after the sheet has been inserted ... | 09/08/1998 |
| 5790005 | Low profile coupled inductors and integrated magnetics In a dc-to-dc converter, input and output inductors loosely coupled and isolation transformer windings closely coupled are implemented on a UI magnetic core in such a manner as to satisfy a zero-ripple condition k1 =n of current in the output i... | 08/04/1998 |
| 5729867 | Flexible and detachable web hinge for display panels capable of orienting one panel relative to another through 360 degrees A flexible web-hinge is extruded from plastic having two U-shaped parts connected together at the center of their backs by a flexible web, each with a slightly arced back and each having flat leaves extending from relatively rigid corners that are nearly ... | 03/24/1998 |
| 5655326 | Method of deploying a weapon utilizing the "Glock system" which provides maximum safety and readiness A method is disclosed for placing a semiautomatic pistol, such as a Glock pistol (or any other type of pistol having a recoiling slide on a frame for both loading another cartridge from a magazine and cocking the trigger mechanism of the pistol), in a con... | 08/12/1997 |
| 5654880 | Single-stage AC-to-DC full-bridge converter with magnetic amplifiers for input current shaping independent of output voltage regulation An ac-to-dc switching full-bridge converter employing voltage bidirectional switches as controllable series input switches, preferably implemented with magnetic amplifiers, that couple ac rectifiers to a single-stage full-bridge dc-to-dc converter in orde... | 08/05/1997 |
| 5642267 | Single-stage, unity power factor switching converter with voltage bidirectional switch and fast output regulation Ac-to-dc switching converters employ bidirectional voltage switches, preferably magnetic amplifiers in series with a fast recovery diode, as controllable series input switches that couple ac rectifiers to single-stage dc-to-dc converters in order to provi... | 06/24/1997 |
| 5620255 | Temperature measurement and display of the temperature of a cooking surface Measurement and display of the temperature of a cooking surface of a cooking utensil is provided by a temperature sensor, such as a thermocouple in thermal contact either directly with the cooking surface or through a clamp on the side of the cooking uten... | 04/15/1997 |
| 5570276 | Switching converter with open-loop input voltage regulation on primary side and closed-loop load regulation on secondary side An isolated switching dc-to-dc converter is provided with a novel open-loop input voltage regulation on the primary side and the full regulation and independent protection of each of multiple outputs on the secondary side using an auxiliary circuit compri... | 10/29/1996 |
| 5539630 | Soft-switching converter DC-to-DC isolated with voltage bidirectional switches on the secondary side of an isolation transformer A soft-switching dc-to-dc converter for providing regulated voltage to a load combines the functions of loss-less soft switching at zero voltage and at a constant switching frequency on the primary side and soft switching at zero current on the secondary ... | 07/23/1996 |
| 5484637 | Tempered glass artist palettes Palettes are made from a sheet of translucent tempered glass and, except for table-top palettes (although optionally there also), provided with a textured surface or a sheet of white vinyl laminated on the backside of the sheet. A thumb hole is provided o... | 01/16/1996 |
| 5476028 | Gun muzzle brake A concave surface at the front end of a gun facing the gun muzzle is tilted upwardly to redirect propelling gas rays to a venting port or ports adjacent the gun muzzle for virtual recoil neutralization. In the case of a single port at the top of the expan... | 12/19/1995 |
| 5441344 | Temperature measurement and display of a cooking surface Measurement and display of the temperature of a cooking surface of a cooking utensil is provided by a temperature sensor, such as a thermocouple, in thermal contact either directly with the cooking surface or through a clamp on the side of the cooking ute... | 08/15/1995 |
| 5442539 | CuK DC-to-DC switching converter with input current shaping for unity power factor operation A DC voltage to a load is provided from a rectified AC power line source with unity power factor using Cuk dc-to-dc switching converter, either unisolated or isolated extensions, operated as an automatic current shaper with unity power factor performance.... | 08/15/1995 |
| 5337396 | Conductive plastic optical-electronic interface module A conductive plastic optical-electronic interface incorporates a rigid double-sided printed circuit board (PCB) for small compact size design with surface mount technology in a small sixteen pin dual-in-line housing with a protruding receptacle for a ferr... | 08/09/1994 |
| 5298903 | Synthetic dielectric material for broadband-selective absorption and reflection Ingredients of loaded dielectric media are specified for the achievement of high absorption and/or high reflection of electromagnetic power over very broad frequency bands and with very low material mass requirements on the absorbing or reflecting agents.... | 03/29/1994 |
| 5100542 | Dispenser of liquid agent for treating a recirculated body of water Concentrated sanitizing liquid is stored in a main reservoir coupled directly to a measured reservoir by a check valve so that it automatically refills upon being emptied by air under pressure from a positive pressure cylinder. That cylinder partially fil... | 03/31/1992 |
| 5077592 | Front-illuminated CCD with open pinned-phase region and two-phase transfer gate regions A front-illuminated CCD of relative high quantum efficiency (QE) and high charge transfer efficiency (CTE) utilizes an open-phase region for receiving photons and two-phase gate regions ($c;1 and $c;2) for transferring electron... | 12/31/1991 |
| 5066013 | Kubotai restraint device having two batons bound together by a cord at points spaced from the ends of the batons A device for restraining a person by the wrist or other part on a limb comprised of two batons bound together by a woven nylon cord at a point from a flanged end of each baton that is equal to about half the length of the cord between batons. That length ... | 11/19/1991 |
| 4979787 | Optical-electronic interface module A plastic multipin connector that provides an optical-electronic interface between the end of a fiberoptic cable and an electronic circuit utilizes a flexible multilayer printed circuit with a ground plane layer on the outside of the folded circuit within... | 12/25/1990 |
| 4160154 | High speed multiple event timer Apparatus for measuring the time of a plurality of successive events with respect to a reference time or event using a master circuit divided into two parts of N and M cascaded stages for counting clock pulses with an early carry propagated from the first... | 07/03/1979 |
