Bizarre Patents
Dining Table Having Integral Dishwasher
A space-saving dishwasher, which may be installed within a counter top or table, having a dish-carrying rack that is vertically shiftable through the open top of the dishwasher for facilitating loading and unloading of the dishes.
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| Number | Title | Issue Date |
| 4994780 | Heated extended resistance temperature sensor, apparatus for sensing and method of making same An extended resistance temperature sensor formed of a plurality of lengths of pre-insulated resistance temperature detector (RTD) wire. The RTD wire is either unheated, self heated or is heated by means of strands of heater wire integrated with or placed ... | 02/19/1991 |
| 4992772 | Metal oxide film resistor A two-layered metal oxide film resistor having a ceramic substrate which has on its surface a first thin (0.1-5 μm) metal oxide film that is based on tin oxide and which has a minor proportion of at least one auxiliary component selected from iron, indiu... | 02/12/1991 |
| 4988971 | Superconducting temperature controller A superconducting temperature controller that can sense the temperature of an area and also heat the enclosed area. A superconducting thin film resistor mounted on a substrate is disposed in an enclosed housing that forms a vacuum. Also disposed within th... | 01/29/1991 |
| 4987400 | Magnetically driven variable resistor gauge An improved magnetically driven resistor gauge (50) which includes a plastic base and plastic cap hermetically sealed together by ultra sonic welding to isolate the interior (90) of the gauge from the external environment. A dedicated ground terminal (100... | 01/22/1991 |
| 4977385 | Distributed RTD An RTD (resistance temperature sensor or detector) sensing device which is a long, thin, unitary device adapted to be distributed across an extended field for the continuous, uninterrupted sensing or interrogation of such field, avoiding the inaccuracy, u... | 12/11/1990 |
| 4977357 | Overvoltage protection device and material A material device for electronic circuitry that provides pro-tection from fast transient overvoltage pulses. The electroded device can additionally be tailored to provide electrostatic bleed. Conductive particles are uniformly dispersed in an insulating m... | 12/11/1990 |
| 4973935 | Infrared detector An infrared detector includes a high resistance substrate, a compound semiconductor disposed on the substrate, a pair of electrodes disposed on the compound semiconductor, and a plurality of grooves in the compound semiconductor perpendicular to a current... | 11/27/1990 |
| 4970488 | Noise-suppressing high voltage cable and method of manufacturing thereof A high voltage cable having a wound conductor made by winding a metallic wire around a ferrite rubber covered reinforcing core, in which the ferrite rubber layer is additionally provided with conductive particles or fibers in order to improve noise suppre... | 11/13/1990 |
| 4965436 | Heater unit An elongated heater unit including an elongated resistor helix, terminals connected to the ends of the helix, at least a first surrounding metallic sheath, powder insulation material disposed within the first sheath and spacing the resistor helix from the... | 10/23/1990 |
| 4962364 | Illuminating type linear resistor for volume control An illuminating type linear resistor for volume control having an insulating substrate; a pattern of resistor and collector formed on one surface of the insulating substrate; a lead formed on the other surface of the insulating substrate for supplying pow... | 10/09/1990 |
| 4952902 | Thermistor materials and elements A thermistor material comprising, in sintered form, (A) a matrix comprising aluminum oxide, silicon oxide, or the oxide of an element belonging to Group 2A in the Periodic Table, and (B) a conductive path forming substance comprising silicon carbide and/o... | 08/28/1990 |
| 4950873 | Sheath heater A corrosion-resistant steel tube such as a sheath heater steel tube and boiler tube which exhibit improved resistance to dry corrosion under high temperature dry-corrosive conditions in the presence of chlorides is disclosed. The steel consists essentiall... | 08/21/1990 |
| 4949064 | Non-linear resistor having a poly (amino acid) membrane A membrane of an ionic pendant-containing, water-insoluble copolymeric poly(amino acid) composed of a first moiety derived from a first amino acid which gives a water-soluble poly (amino acid) with ionic groups of carboxyl and/or amino groups as the penda... | 08/14/1990 |
| 4937552 | Resistance temperature detector A fast time response, exposed-element resistance temperature detector suitable for use under conditions of rapid changes in temperature requiring rapid and accurate temperature readings. In addition, a resistance temperature detector in accordance with th... | 06/26/1990 |
| 4935718 | Molded resin casing of electronic part incorporating flexible board A molded resin casing of a rotary- or sliding-type electronic part internally accommodating a board on which are formed electric conductor patterns slidingly contacted by contacts of a slider of the electronic part, wherein a flexible board having the ele... | 06/19/1990 |
| 4933659 | Voltage non-linear resistor and method of producing the same A voltage non-linear resistor having lightning discharge current withstanding capability, switching surge current withstanding capability, and voltage non-linear index , including a resistor element body consisting essentially of zinc oxide, and a ... | 06/12/1990 |
| 4933660 | Touch sensor with touch pressure capability A touch sensor device, and its method of operation, that provides information as to the position of a touch thereon together with information as to the amount of pressure applied to the sensor at the touch position. The device has a pair of spaced-apart m... | 06/12/1990 |
| 4933661 | Throttle sensor for an internal combustion engine A throttle sensor for an internal combustion engine includes a circuit board and a rotatable body disposed adjacent the circuit board which is connected to the throttle valve and having a pair of brushes disposed in sliding contact with the circuit board.... | 06/12/1990 |
| 4928083 | Wiper for variable electrical resistor The wiper or movable contact of an electrical potentiometer employs fingers of an oval-like transverse cross section to increase the useful service life of the potentiometer in application such as a throttle position sensor where the potentiometer may be ... | 05/22/1990 |
| 4926154 | Indium arsenide magnetoresistor A magnetoresistive sensor that includes a thin film of nominally undoped monocrystalline indium arsenide. An indium arsenide film is described that appears to have a naturally occurring accumulation layer adjacent its outer surface. With film thickneses b... | 05/15/1990 |
| 4926156 | Apparatus for measuring the partial pressure of gases or vapors An apparatus comprising a chemically sensitive sensor material, having an electrical resistance or dielectric constant which changes under the effect of the gases or vapors. According to the invention, this sensor material, which comprises either hydropho... | 05/15/1990 |
| 4924074 | Electrical device comprising conductive polymers A process for preparing an electrical device which has a conductive polymer exhibiting PTC behavior. The cross-linking may be to a level of 50 to 100 Mrad or higher for devices designed to withstand high voltage test conditions. The device may be a lamina... | 05/08/1990 |
| 4920329 | Impedance-compensated thick-film resistor A thick film resistor (TFR) is provided that is capable of being compensated for impedance variations related to the TFR laser-trimming process. According to the invention, a thick film capacitor (TFC) metallization is provided in parallel with the thick ... | 04/24/1990 |
| 4918421 | Nonlinear resistor for low temperature operation A nonlinear resistor which exhibits substantial temperature independence over a wide range of temperatures, including low temperatures, is provided. The resistor is formed of a zinc oxide-based ceramic composition which exhibits nonlinear voltage/current ... | 04/17/1990 |
| 4916428 | High voltage, outdoor, air cooled, dynamic braking resistors and power distribution system incorporating the same An electrical resistor having first and second cylindrical resistance windings helically wound closely adjacent one another about a common axis and wound in opposite directions about such axis. The helical windings of the resistor are connected in paralle... | 04/10/1990 |
| 4916292 | Coiled resistance heating element of carbonaceous material A coiled resistance heating element of carbonaceous or graphite material is disclosed. A simplified process which includes carbonization or graphitization of a coiled strand of an organic material is also disclosed.... | 04/10/1990 |
| 4916427 | Electronic electrothermal conversion material, its products and method for production thereof The present invention relates to the field of electro-thermal conversion material and its products, made by semiconductor material. The process of making the electrothermal conversion material is as follows: a liquor is composed by dissolving two kinds of... | 04/10/1990 |
| 4914417 | Variable resistor A variable resistor whose resistance is adjustable by rotating a rotor on an insulating substrate having an arcuate resistive element. The rotor is formed of an insulating resin and includes an inner skirt and an outer skirt extending from a bottom surfac... | 04/03/1990 |
| 4912304 | Thick-film incubator A thick-film incubator is used with a temperature control circuit and a mounting member on which the thick-film incubator is disposed. The thick-film incubator includes a ceramic substrate which has a first pair of conductive pads disposed at opposite end... | 03/27/1990 |
| 4912451 | Heterojunction magnetic field sensor The heterojunction magnetic field sensor is basically a heterojunction structure forming a two-dimensional electron gas layer having a high carrier mobility at the junction portion of at least two different kinds of semiconductor layers having a different... | 03/27/1990 |
| 4912450 | Thermistor and method of producing the same A method for producing negative temperature coefficient thermistor units, comprising the steps of forming a pair of green sheets of insulating ceramic material, stacking the green sheets interposing therebetween in predetermined areas a layer of paste for... | 03/27/1990 |
| 4910491 | Electrical apparatus used with a potentiometer and/or variable resistance element An electrical apparatus is provided for use with a potentiometer or variable resistance element which does not require a mechanical connection between a contact member and an activating mechanism. This is accomplished by using a magnet in at least a porti... | 03/20/1990 |
| 4908598 | Rotary potentiometer The cover of a casing of the potentiometer is formed with an opening which is adapted to be closed by another cover and through which the top surface of a resistor core is accessible. Trimming resistors are located on the top surface and are connected ele... | 03/13/1990 |
| 4908599 | Temperature-sensitive resistance element A temperature-sensitive resistance element comprises an alumina substrate having terminals and a sinuous temperature-sensitive resistance layer thereon. The layer and terminals are formed of electroplated palladium which has been recrystallized.... | 03/13/1990 |
| 4908597 | Circuit module for multi-pin connector Connectors with capacitors or resistors built in are very expensive and a custom design requires a considerable lead time. By building a circuit in modular form so that it connects to a standard cylindrical connector, both the cost and lead time are reduc... | 03/13/1990 |
| 4906964 | Voltage non-linear resistor An improved voltage non-linear sintered resistor which includes zinc oxide, bismuth oxide and at least one metal oxide additive selected from the group consisting of antimony oxide, silicon oxide, and mixtures thereof. The sintered resistor includes at le... | 03/06/1990 |
| 4906968 | Percolating cermet thin film thermistor A cermet thin film resistor having small particles of a refractory metal embedded in a ceramic insulator at compositions near the percolation transition. The cermets are produced by co-deposition in a dual-electron beam evaporator. The refractory metal is... | 03/06/1990 |
| 4906966 | Trimming resistor network A trimming resistor network includes first and second external connection terminals, a first resistor having two ends acting as first and second connection terminals, a first coupling body for connecting the first external connection terminal to the first... | 03/06/1990 |
| 4904978 | Mechanical sensor for high temperature environments A force or pressure sensor includes a monocrystalline silicon diaphragm coated with silicon dioxide upon which single crystalline silicon resistors are fused in a low profile pattern on the surface. The resistors are almost perfectly electrically isolated... | 02/27/1990 |
| 4904850 | Laminar electrical heaters An electrical heater which has a conductive polymer resistive element and two laminar electrodes. The electrodes are shaped and positioned such that there is a continuous margin around the periphery of the resistive element on at least one surface. The ma... | 02/27/1990 |
