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 |
| 8018319 | Foil-type switching element, in particular for use in collision detection systems A foil-type switching element comprises a first carrier foil and a second carrier foil arranged at a certain distance from each other by means of a spacer, which comprises one opening (18) defining an active area. An elongate resistive layer (20) is pr... | 09/13/2011 |
| 7642893 | Array of independently-addressable resistors, and method for production thereof The arrays of independently-addressable resistors are commonly used to control miniature elements. The invention proposes solving the problem caused by the loss of power dissipated in the addressed resistor by choosing, for this resistor, a material with a negative ... | 01/05/2010 |
| 7364682 | Nasal and oral cannula breathing detection device A cannula and method of forming a cannula by forming a cannula mandrel assembly having a nare mandrel, a main body mandrel and mouthpiece mandrel; heating the cannula mandrel assembly, applying a polymeric material to the cannula mandrel assembly to provide a desire... | 04/29/2008 |
| 7277289 | Resistor for controlling a fan motor rotating speed for use in an air conditioner Provided is a resistor for controlling a fan motor rotating speed for use in an air conditioner. The resistor comprises a base body, a radiator attached to a top portion of the base body, a printed resistor circuit board covered with insulating sheets and received w... | 10/02/2007 |
| 7268661 | Composite fuse element and methods of making same A composite fuse element includes a network or matrix of conductive material that is in contact and interspersed with arc suppressing materials at a particle level. In such a matrix, the conductive (e.g., metal) network and the arc suppressing material particles pro... | 09/11/2007 |
| 6841745 | Battery device A battery device has a plurality of batteries connected in series. Each of the batteries includes a thermally responsive switch, a first conductive plate connected to a first terminal of the thermally responsive switch, a second conductive plate connected to a commo... | 01/11/2005 |
| 6774509 | Electrical switch assembly An electrical switch assembly for controlling an electrical appliance, wherein the assembly includes first and second electrical elements. The first element is an on/off switch for initially switching on the appliance. The second element is a pressure-sensitive vari... | 08/10/2004 |
| 6653928 | Dry load test apparatus A dry load test apparatus 40 comprises multi stage resistor bodies 57R, 57S and 57T for high voltage load tests. having a large number of flat shaped resistor assemblies Ri, Si and Ti consisting of numerous elongate resistor elements rj provided side by s... | 11/25/2003 |
| 6593758 | Built-in test system for aircraft indication switches A built-in test system for aircraft indication switches comprises a plurality of aircraft indication switches and a first resistor adding network having input resistors individually connected to first contacts of different ones of the indication switches.... | 07/15/2003 |
| 6079401 | Single knob rotary oven control apparatus providing continuous and discrete control information In an appliance such as an oven for cooking food, the invention contemplates a user rotatable, single knob oven control device which provides both discrete and continuous control signals to the appliance controller. The discrete outputs indicate selection... | 06/27/2000 |
| 6069553 | Blower speed control resistors for automotive or other service A layered electrical resistor having flat components stacked as follows: a first metal outer plate, a first thin outer electrical insulator, a first thin sheet metal resistor element, a first thin inner insulator, a metal midplate, a second thin inner ins... | 05/30/2000 |
| 5770993 | Thermal fuse A resistor with a thermal fuse includes: a substrate consisting of an insulating material; a wire pattern formed on a surface of the substrate; a gap for electrically cutting off the wire pattern; a plate spring consisting of an electrically conductive ma... | 06/23/1998 |
| 5612664 | Electronic circuit An electronic circuit in which resistors R0 . . . Rn+m are coupled in series with fusible cut-outs Q0 . . . Qn+m and in which at least one fusible cut-out Qn+1 . . . Qn+m is bridged by an a... | 03/18/1997 |
| 5563573 | Pseudo-random switched resistor A pseudo-random switched resistor for emulating a relatively high input impedance. The switched resistor comprises a relatively low value resistor, a semiconductor switch coupled to the resistor, and a pseudo-random pulse generator coupled to the switch f... | 10/08/1996 |
| 5457294 | UHV breaker provided with resistances A resistance-provided UHV breaker includes a tank, a main contact unit, a resistance unit, and a resistance contact unit. The main contact unit includes plural main contacts arranged in the axial direction of the tank. The resistance unit includes plural ... | 10/10/1995 |
| 5401923 | Resistor-provided UHV breaker A resistor-provided UHV breaker includes a tank, a main contact unit, a resistor unit, a resistor contact unit, support members, and a displacement absorbing system. The support members are arranged between the main contact and the resistor unit to suppor... | 03/28/1995 |
| 5182538 | Bimetal thermoswitch The bimetal thermoswitch consists of an electrically insulating, flat carrier (1), at least two electric terminals (3, 4), which are secured to the carrier (1) and are respectively connected to a fixed contact (10), which is mounted on the carrier, and to... | 01/26/1993 |
| 4994634 | Sheet switch A sheet switch comprises a pair of flexible insulative films, one of which is provided with a plurality of electrodes, resistances connected to the electrodes, respectively, and line patterns for externally connecting the electrodes via the resistances. T... | 02/19/1991 |
| 4940959 | Reversible resistant device A reversible resistant device having the property of being normally non-conductive, but being adapted to being converted to the conductive state. This change in conductive state is achieved by subjecting the device to a high voltage or high electric field... | 07/10/1990 |
| 4847587 | Bimetal thermoswitch The bimetal thermoswitch consists of an electrically insulating, flat carrier (1), at least two electric terminals (3, 4) which are secured to the carrier (1) and are respectively connected to a fixed contact (10), which is mounted on the carrier, and to ... | 07/11/1989 |
| 4811167 | Integrated circuit socket An integrated circuit socket is provided with an insulating member and a plurality of conductive socket pins extending from the insulating member. These socket pins are adapted to be electrically connected to the pins of an integrated circuit. A plurality... | 03/07/1989 |
| 4746784 | Method of attaching a lead to a metal end cap of a safety fuse A method of attaching a lead to a metal end cap of an otherwise complete miniature-type safety fuse having a fuse element secured to the interior of said end caps by connecting means, is characterized in that the attaching is effected by a soldering opera... | 05/24/1988 |
| 4713531 | Heating element for textiles A heating element for textiles is disclosed, which comprises a plane textile element and, combined with this, metal conductors, which can be connected to a source of electrical current and which oppose the electrical current flowing through them with a he... | 12/15/1987 |
| 4675645 | High-frequency selecting switch terminal An improved high frequency selecting switch terminal comprising two conductor pins which are coaxial. When a conductor pin from a cable is inserted into the terminal, it pushes the front end of the first conductor pin forward into the front end of the sec... | 06/23/1987 |
| 4553928 | Switching device for photoflash unit An improved multiple flashlamp array is disclosed having a plurality of low voltage type lamps fired individually and in sequence by means of a plurality of static solid switching devices capable of reliable actuation by radiant energy generated during fl... | 11/19/1985 |
| 4533893 | Monolithic fuse for rotating equipment There is provided a current limiting fuse having a uniform and supported element with arc voltage controlling and shaping capabilities that can withstand high mechanical and electrical stress.... | 08/06/1985 |
| 4528544 | Control apparatus for variable speed reversible motor A control unit, adapted to control a reversible, variable-speed electrical motor includes a control lever protruding through a U-shaped slot in a housing. Movement of the lever from one side to the other of the U-shaped slot controls the direction of rota... | 07/09/1985 |
| 4489291 | Circuit breaker provided with parallel resistor A circuit breaker fitted with a parallel resistor and provided with main contacts and resistor contacts arranged electrically in parallel with the main contacts wherein the resistor is formed of a material selected from the group consisting of Cr, CrN, Cr... | 12/18/1984 |
| 4487574 | Switching device for photoflash unit A multiple flashlamp array is disclosed having a plurality of lamps fired individually and in sequence by means of a plurality of static solid switching devices capable of reliable actuation by radiant energy generated during flashing of the lamps. Initia... | 12/11/1984 |
| 4380749 | One-time electrically-activated switch A one-time electrically-activated switch is composed of a cured polymeric binder which contains a powdered conductive material in an amount sufficient to establish particle-to-particle contact throughout the binder and in which the material powder particl... | 04/19/1983 |
| 4274075 | Electronic multi-range variable resistor The application discloses an electronic multirange step resistor for adjustment of a timing relay with an analog adjustment which is equipped with a switch for the selection of the various resistance ranges and which is further equipped with a turning kno... | 06/16/1981 |
| 4227236 | Flexible body for use in liquid level indicating apparatus An upright metallic pipe, which extends into the supply of liquid in a vessel adjacent to a conduit for a float with a permanent magnet which rises and falls with the upper level of liquid, contains an elongated flexible body having an impermeable insulat... | 10/07/1980 |
| 4227057 | Apparatus for ascertaining the upper level of liquids in tanks or the like Apparatus for ascertaining the upper level of oil or another liquid in a shallow or deep tank has a perforated vertical conduit which is installed in and extends to the bottom of the vessel. A vertical pipe is adjacent to the conduit and is sealed from th... | 10/07/1980 |
| 4163964 | Pneumatic or hydraulic pressure sensors with several thresholds of response The present invention relates to an improvement in pneumatic or hydraulic pressure sensors with several thresholds of response. There often is a need for pressure sensors with several thresholds of response to predetermined pressure values. One such case exist... | 08/07/1979 |
| 4156227 | Jogging switch mechanism A jogging switch mechanism is provided for a potentiometer which permits the potentiometer shaft to be rotated either clockwise or counterclockwise and then, upon release, to return automatically to a very accurately centered neutral position. The neutral... | 05/22/1979 |
| 4152688 | Air flow switch An electrical switch responsive to air flow having an insulated base with a snap action switch mounted thereupon. The snap action switch with an actuating pin impinging on one end of a bar that is mounted on a pivot and axially movable. The other end of t... | 05/01/1979 |
| 4128826 | Electrical high-voltage apparatus An electrical high-voltage apparatus wherein a plurality of resistor disks are arranged along and carried by a shaft and wherein a centering body is also arranged along the region of the shaft carrying the resistor disks. The centering body comprises firs... | 12/05/1978 |
| 4006443 | Composition resistor with an integral thermal fuse A composition resistor incorporates a thermal fuse inert preferably positioned at its center. The insert includes a fuse link which under normal conditions provides electrical continuity between lead wires extending from each end of the resistor. If a cur... | 02/01/1977 |
