Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 6913480 | Connector for making connection with mating interface A connector for making an electrical connection with a mating interface (17) includes a hollow conductor (1) within which is included a member (9) which is relatively movable with respect to the conductor (1). Resilient means (12),... | 07/05/2005 |
| 6633333 | Cameras A camera producing colour video outputs may employ an image intensifier 5 and a monochrome CCD sensor 3. The scene is exposed through filters F3, F4 which may each contain stripes of subtractive primary colours alternating with clear... | 10/14/2003 |
| 6590982 | Wireless stereo center speaker system A Wireless Concealed Transmitter Stereo Center Speaker System includes a concealed transmitter unit installed a center speaker, and two receiver units installed in two rear speakers, wherein the concealed transmitter unit includes an automatic audio level... | 07/08/2003 |
| 6579017 | Tripod A tripod is constructed to include a platform unit, which enables the platform thereof to be adjusted horizontally through 360°, a support unit for enabling the platform unit to be adjusted to the desired tilting angle, the support unit having a rear leg... | 06/17/2003 |
| 6563289 | Solar cell arrangements In a solar cell arrangement, a generally rectangular solar cell has mutually orthogonal sides in plan view and a third oblique side to them which adjoins them. A protection diode is located in the region bounded by the third side and projections of the fi... | 05/13/2003 |
| 6548024 | Gas sensors In a catalytic sensor, a bead is located within a can having an aperture in its front surface. The bead is surrounded by thermally insulating material such as glass fiber and a filter material is arranged between the bead and the aperture in the can. This... | 04/15/2003 |
| 6520877 | Basketball A basketball constructed to include an inflatable inner tube, a leather cover, a carcass laminated in between the inner tube and the leather cover, and a thread layer bonded between the inner tube and the carcass, the carcass having a plurality of longitu... | 02/18/2003 |
| 6499411 | Table tent A table tent is described for protecting food at an outdoor picnic. The table tent is intended to be constructed of mesh and supported on an interframe covering a conventional picnic table top. A mesh panel is provided immediately adjacent a table top and... | 12/31/2002 |
| 6496047 | Solid state switch with pulsed control In a switching arrangement, a plurality of modules are connected such that the main switching elements, FETs, are in series. Control of and power to the FETs is supplied via a single turn primary passing through a plurality of toroidal secondary transform... | 12/17/2002 |
| 6465958 | Electron beam tubes An electron beam tube such as a klystron includes a penultimate resonant cavity (22) located before the output cavity (14). The penultimate resonant cavity (22) is arranged to be inductively coupled, being resonant at a frequency which is slightly greater... | 10/15/2002 |
| 6446919 | Size-adjustable detachable portable garbage bag rack A size-adjustable detachable portable garbage bag rack for holding a garbage bag to collect garbage is constructed to include an adjustable top frame unit formed of four main frame bars and four auxiliary frame bars, an adjustable bottom frame unit formed... | 09/10/2002 |
| 6420976 | Underwater hydrocarbon production systems A hydrocarbon production system comprises a topside installation connected to a underwater distribution unit 4 by an umbilical 3. The unit 4 is connected to Christmas Trees 8, 9 and 10 by respective ones of jumper interconnects 11, 12 and 13. Each Christm... | 07/16/2002 |
| 6407495 | Electron beam tube having particular structure of the vacuum envelope containing electron gun An electron beam tube includes an electron gun included within a vacuum envelope defined partly by a ceramic cylinder. The ceramic cylinder includes straight sided portions and with an intervening conical section between them. The straight sided portions ... | 06/18/2002 |
| 6378420 | Filter system for a deep fat fryer A filter system for a deep fat fryer is described. The filter system can be used in a single fryer or with two or more sequentially operated fryers. In the later case, a common filter pan is used with a horizontal filter in the pan, disposed below a commo... | 04/30/2002 |
| 6376283 | Mono-chip multimediacard fabrication method A MultiMediaCard fabrication method includes the steps of (1) conductive bracket preparation, (2) bending front legs of the conductive bracket into shape, (3) injection shell, (4) die bond, (5) wire bond, (6) glob top, (7) printing the desired logo and de... | 04/23/2002 |
| 6371571 | Adjustable eccentric wheel hub assembly An adjustable eccentric wheel hub assembly includes a wheel hub having an eccentric through hole, a core member mounted in the wheel hub, an axle mounted in an eccentric through hole of the core member, and an adjustment wheel mounted on the axle tube and... | 04/16/2002 |
| 6367829 | Folding collapsible kick scooter A folding collapsible kick scooter includes a footplate, a head tube collapsibly coupled to the front side of the footplate by a joint and lock unit, a stem moved in and out of the head tube and releasably locked in position by a quick-release lock, a han... | 04/09/2002 |
| 6358154 | Flexible coupling A flexible coupling (12, 16) for transmitting torque from a drive shaft (10) to a driven shaft (18) is described. The coupling (12, 16) comprises a rotatabledrive member (20) securable to the drive shaft (10); a rotatable driven member (22) securable to t... | 03/19/2002 |
| 6353176 | Manufacturing method for solar cell arrangements In a manufacturing method of a solar cell arrangement, a p-n junction is formed in semiconductor material which is then separated to give a main body and an off-cut. The off-cut is connected in reverse parallel across the main body so as to act as a prote... | 03/05/2002 |
| 6351187 | Structure of operational amplifier An operational amplifier including a differential amplifier circuit, and a reverse output buffer. The reverse output buffer has a first forward switch, a second forward switch, a first reverse switch, and a second reverse switch. The first forward switch ... | 02/26/2002 |
| 6322870 | Sheet material sealing structure for inflatable apparatus An inflatable apparatus, which includes an upper cover sheet and a bottom cover sheet respectively cut from a multi-layer sheet material, and at least one connecting band respectively connected between the upper cover sheet and the bottom cover sheet and ... | 11/27/2001 |
| 6290617 | Golf divot replacement tool A golf club accessory device is described. The device of this invention is an essentially flat plastic member having a forked end for use in replacing divots or green repair, and integral jaw members for attachment of the device to the club shaft adjacent... | 09/18/2001 |
| 6212949 | Level sensor and washer unit A fluid level sensor and a washer unit are provided for an automated immonoassay processing system. A washer head (13) is vertically movable by a drive (2) above a reaction tray (8) having fluid (15) in separate cells. The level sensor comprises two elect... | 04/10/2001 |
| 6199993 | Structure of automobile exterior rearview mirror A new structure of automobile exterior rearview mirror which integrates an arc-surface wide-angle mirror and a plane mirror together to form a one-piece design. This design overcomes the drawbacks of the existing exterior rearview mirror, in which a drive... | 03/13/2001 |
| 6196118 | Efficient frying apparatus A baffle system for a deep fat fryer is described. The baffle system improves heat transfer from straight heat tubes which pass through the tank. The baffle is disposed within the tube to encounter products of combustion from a gas fired burner which ente... | 03/06/2001 |
| 6189845 | Tripod A tripod, in particular a mini tripod for mounting lockably a photographic apparatus, includes a platform, a base, and a plurality of legs. The joint between the platform and the base serves as a pivot whereby the platform can perform deviation within a l... | 02/20/2001 |
| 6183204 | Electric fan with desk fan/floor fan dual-mode An electric fan, which includes a saucer-like base for positioning on a flat surface, a floor fan connector for fastening to the base, a fan assembly, the fan assembly having a downwardly extended bottom coupling tube and a peg raised from the periphery o... | 02/06/2001 |
| 6160480 | Wireless inline-skate and skate board pulse watch with speed and heart rate monitoring A wireless inline skate or skate board pulse watch which includes an inline skate or skate board transmitter worn on the user's foot to detect his body motion through a vibration switch and to moderate the detected signal into a radio signal is described.... | 12/12/2000 |
| 6152022 | Burner mounting assembly for a deep fat fryer A modular burner mounting assembly for a deep fat flyer is described. A vertical plate is used to support each burner with a fuel-air mixture being admitted at one end, and a flame disposed at an opposite end, the flame being dimensioned to register on it... | 11/28/2000 |
| 6151746 | Blow-molded brushware A method for fusing brushware on a thin walled, molded hollow plastic synthetic container is described. Tufts of synthetic materials arc picked and non-working ends thereof fused. The hollow bottle is molded with protrusions extending from a surface there... | 11/28/2000 |
| 6138711 | Air valve for an inflatable device An air valve for an inflatable device, which includes a valve block having two downward locating plates, a valve cap detachably closed on the valve block, and a valve flap fastened to an inside annular flange inside the valve block and turned to close/ope... | 10/31/2000 |
| 6135143 | Air valve for an inflatable article An air valve includes a valve body having an air passage and a transverse bar suspended in the air passage, a valve flap coupled to said transverse bar at a bottom side to close said air passage, and a movable plate coupled to locating blocks at said tran... | 10/24/2000 |
| 6119581 | Structure of hand pump A hand pump includes a cylindrical casing having a top open side covered with a top cover and a bottom side provided with an air outlet, a handle inserted through a hole the top cover, and a piston moved with the handle up and down to pump air out of the ... | 09/19/2000 |
| 6116554 | Tripod A tripod, which includes a tubular center post, a socket mounted on the center post, a plug cap fastened to the socket to secure a holder frame, a left side cover and a right side cover fastened to the holder frame to hold a platform, and a bush mounted o... | 09/12/2000 |
| 6118794 | Digital signal processing apparatus for frequency demultiplexing or multiplexing Digital signal processing apparatus for frequency demultiplexing a wide band channel which converts the data stream into parallel branches by means of serial-to-parallel conversion, and demultiplexing which consists of low pass and high pass fine filterin... | 09/12/2000 |
| 6095037 | High efficient convection fryer with continuous filtration An improved efficient deep fat fryer is described. Heat exchange within the fryer tank is facilitated by a "U" shaped burner tube which is cantilever mounted from a side of the tank and a burner system is provided to circulate in a spiral pathway products... | 08/01/2000 |
| 6095078 | Submarine propulsion control system An underwater vehicle having a negative buoyancy and thrust units by which it can hover is described. Slow speed maneuverability while hovering is achieved by moving the position of a mass fore and aft and/or side to side such as to cause the vehicle to p... | 08/01/2000 |
| 6056379 | Sliding track assembly A sliding track assembly, which includes an outer track having two inner flanges bilaterally and longitudinally provided on the inside, an intermediate track moved in and out of the outer track, an inner track moved in and out of the intermediate track, t... | 05/02/2000 |
| 6056028 | Portable fueling apparatus A portable vehicle fueling device is described wherein fuel is dispensed directly from the vehicle fuel tank directly from the vehicle fuel tank by the vehicle fuel pump through the hose of this invention so that a supply of gasoline can be provided for a... | 05/02/2000 |
| 6053710 | Ceiling fan and fan blade for a fan A fan blade having a flow bumper curved backwards at a front side thereof, a mouth on the middle for gathering currents of air, a flow guide obliquely forwardly extending from the flow bumper at a top side above the mouth, and a rack and a mounting board ... | 04/25/2000 |
