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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 4901521 | Combined gas turbine and steam power plant having a fluidized bed furnace for generating electrical energy A combined gas turbine and steam power plant for generating electrical energy includes a combustion chamber for the complete combustion of solid fuels with the aid of a stationary fluidized bed generating steam for the operation of the steam power plant, ... | 02/20/1990 |
| 4860901 | Housing with a flexible shock protector for a portable measuring instrument A housing for a portable measuring instrument includes inherently stable supporting housing parts formed of hard plastic, the supporting housing parts including a front and a back with relatively long right and left sides, relatively short sides and two o... | 08/29/1989 |
| 4858153 | Method and apparatus for fixing an instantaneous measured value A method and apparatus for fixing an instantaneous measured value performs the steps of creating measured values as a mean value of a set number of individual measurements, recording sequential measured values after initialization in a cycle determined by... | 08/15/1989 |
| 4849806 | Shunting element A shunting element includes two terminal elements for bridging an electrical component, at least one semiconductor component, and at least one electrically conducting layer connecting the semiconductor component to the two terminal elements, the electrica... | 07/18/1989 |
| 4845942 | Combined gas turbine and steam power plant having a fluidized bed furnace for generating electrical energy A combined gas turbine and steam power plant for generating electrical energy includes a combustion chamber for the complete combustion of solid fuels with the aid of a stationary fluidized bed generating steam for the operation of the steam power plant, ... | 07/11/1989 |
| 4828664 | Process for the production of a niobium oxycarbonitride superconducting fiber bundle Superconducting fiber bundle which contains a multiplicity of carrier fibers such as, for instance, carbon fibers, boron fibers, steel fibers coated with a superconducting layer of a niobium compound of the general formula NbCx Ny O | 05/09/1989 |
| 4822573 | Fluidized-bed reactor A fluidized-bed reactor for the pyrolytic treatment of wastes containing hydrocarbons and a high content of polymeric organic substances includes a circumferential wall having an inner surface and an interior with a conical lower section and an expanded c... | 04/18/1989 |
| 4810843 | Device for inductively heating the edges of elongated moving workpieces A device for inductively heating the edges of elongated movable workpieces, includes an inductor having vertical pole surfaces disposed one above. The edge of the elongated movable workpiece is maintained at a given distance from and completely outside th... | 03/07/1989 |
| 4795972 | Digital measuring method and apparatus for a quasi-analog measured value display A digital measuring method an apparatus for displaying quasi-analog measured values performs the steps of displaying a measurement scale and interconnected triggerable indicator segments on a display having a given indicator center distance, representing ... | 01/03/1989 |
| 4789824 | Digital measuring instrument for displaying a measured value that varies over time In order to display a measured value, a digital measuring instrument is provided with a digital display and an analog display. The display value emitted by the digital display is fixed during a predetermined holding time. The analog display displays the d... | 12/06/1988 |
| 4788626 | Power semiconductor module A power semiconductor module includes a plastic housing having an interior. A substrate in the form of a ceramic plate with upper and lower surfaces is inserted in the housing as a housing bottom. Metallizations are disposed on the upper and lower surface... | 11/29/1988 |
| 4772867 | Precision resistance network, especially for thick-film hybrid circuits A precision resistance network of individual resistances Ri, especially for thick-film hybrid circuits includes an integrated structure formed of an electrically insulated substrate, having an electrically conductive film of constant thickness ... | 09/20/1988 |
| 4763478 | Method and device for driving a linearly movable component, especially the movable switch contact of an electric high-voltage circuit breaker A method and device for driving a linearly movable component, wherein a pressurized fluid is generated by feeding a given volume of oxygen into a combustion space connected to a piston/cylinder configuration and feeding a given volume of fuel into the com... | 08/16/1988 |
| 4761353 | Electrochemical storage cell An electrochemical storage cell based on sodium and sulfur having an anode space and a cathode space, which are separated from one another by a solid electrolyte and are defined at least in some areas by a metal housing wherein the cathode space, in order... | 08/02/1988 |
| 4752708 | End winding support for electric machines An apparatus for supporting conductor bars of an end winding of a stator winding of an electric machine having a lamination stack includes pressure plates holding the lamination stack together, support angles supporting the conductor bars in the vicinity ... | 06/21/1988 |
| 4746406 | Pyrolyzing plastic or rubber wastes Pyrolytic reprocessing of plastic, rubber, or other hydrocarbon materials in which the resultant pyrolysis gas is brought in a cooling stage to a temperature just above the freezing point of water and to a pressure of approximately 0.8 to 1.4 bar of overp... | 05/24/1988 |
| 4746055 | Method and connecting material for the metallic joining of parts Method for the metallic joining of parts which are formed by semiconductor components with metallization on at least one side or by metallic components or metallic substrates. A composite multilayer material is arranged between the parts to be joined toge... | 05/24/1988 |
| 4731644 | Semiconductor power module with ceramic substrate A semiconductor power module includes a plastic housing, a ceramic substrate with upper and lower surfaces being disposed in the housing, upper and lower metallizations respectively disposed on the upper and lower surfaces of the substrate, components dis... | 03/15/1988 |
| 4726392 | Drainage canal A drainage canal assembly includes a canal housing for receiving electrical components, a drainage canal in the form of a syphon formed in the canal housing, and a check valve disposed in the drainage canal permitting liquid to leave the canal housing but... | 02/23/1988 |
| 4700879 | Method for manufacturing semiconductor power modules with an insulated contruction A method for manufacturing insulated semiconductor power modules includes: presoldering a plurality of semiconductor sandwiches and a carrier unit including a metal base plate, ceramic insulating discs and connecting tabs with a high-melting solder in a f... | 10/20/1987 |
| 4699800 | Process for the production of superconducting fiber bundles Production of superconducting fiber bundles where in a CVD reactor niobium carbonitride of the general formula NbCx Ny is deposited on support fibers by means of chemical deposition from the vapor phase by reaction of niobium chlorid... | 10/13/1987 |
| 4698609 | Magnetic tripping device A magnetic tripping device for an electrical wiring device includes a U-shaped magnetic yoke, a cylindrical non-magnetic coil form having two end surfaces and a periphery and being disposed in the magnetic yoke, a magnetic core disposed in the coil form, ... | 10/06/1987 |
| 4696189 | Housing for a measuring device A measuring device housing includes two mutually assembled housing shells having mutually engaged dust protection edges, a trowel shape with a relatively narrow handle-type holder part changing into a relatively wide plate-type indicator part, an operatin... | 09/29/1987 |
| 4680615 | Silicon semiconductor component with an edge contour made by an etching technique, and method for manufacturing this component Silicon semiconductor component with a wafer-like silicon semiconductor body with an edge contour made by an etching technique. The component has a p-region parallel to a principal surface of the semiconductor body and has in this principal surface a pass... | 07/14/1987 |
| 4678248 | Direct self-control of the flux and rotary moment of a rotary-field machine A method for controlling a rotating-field machine supplied from an inverter, the output voltage system of the inverter being variable with respect to amplitude, phase and frequency includes supplying amplitudes of stator flux components formed from measur... | 07/07/1987 |
| 4677411 | Explosion-proof or flame-proof plug having a transformer disposed in a compression-resistant chamber An explosion-proof plug includes a first casing part having two ends and an outer wall having an edge and defining a compression-resistant annular chamber being open toward one of the ends, an annular transformer disposed in the annular chamber, a cover s... | 06/30/1987 |
| 4670771 | Rectifier module Rectifier module, including a frame forming a housing wall and having an open top and bottom, a ceramic plate cemented to the frame forming a housing bottom and having a side facing the interior of the housing and a side facing away from the interior of t... | 06/02/1987 |
| 4670511 | Method for producing a plastic Method for manufacturing a conductive plastic of a defined conductivity by forming a polymer alloy. A polar or nonpolar insulating polymer and a polar or nonpolar conductive polymer are used for forming the polymer alloy. The two polymers are mixed togeth... | 06/02/1987 |
| 4660121 | Electronic safety barrier An intrinsically safe safety barrier includes an outgoing line, a return line, two switching transistors connected in the outgoing line, at least two control transistors having base-emitter circuits for controlling the switching transistors in order to re... | 04/21/1987 |
| 4659638 | Electrochemical storage cell Electrochemical storage cell of the sodium and sulfur type with an anode space and a cathode space which are separated from each other by a solid electrolyte and are bounded at least in places, by a metallic housing, with the cathode space for forming the... | 04/21/1987 |
| 4657776 | CVD process for the production of a superconducting fiber bundle Manufacture of superconducting fiber bundle coated with niobium carbonitride by a combination of the CVD process with a plasma activation under a low total gas pressure in which niobium chloride, carbon and nitrogen are reacted to produce the niobium comp... | 04/14/1987 |
| 4652964 | Varistor fuse element Varistor fuse element for protecting an electric circuit against overvoltages, including a thermal fuse, a varistor combined with the thermal fuse for for tripping the thermal fuse with joulean or ohmic heat losses of the varistor, first and second conduc... | 03/24/1987 |
| 4651253 | Shunting element A shunting element includes first and second electrical terminals for shunting an electrical component, a semiconductor component, and at least two electrically conducting parts partly formed in springs being electrically conductingly connected between th... | 03/17/1987 |
| 4647141 | Zener barrier An intrinsically safe safety barrier for attachment to a standard profiled supporting bar, includes a housing having a narrow shell-shaped housing part with narrow sides and wide sides, one of the wide sides being open, a circuit board disposed in the hou... | 03/03/1987 |
| 4639759 | Power transistor module A power transistor module includes a housing having a frame forming a housing wall and a ceramic plate fastened to the frame forming a housing bottom, structured metallizations disposed on the ceramic plate forming conductor runs and terminal pads, compon... | 01/27/1987 |
| 4628503 | Method and device for performing a bus request and collective acknowledgement in a process bus system A method for performing a bus request or collective acknowledgement on a bus system, in a process bus system for serial data transmission, including subscribers of the process bus system, and a bus control device, includes generating a band-limited signal... | 12/09/1986 |
| 4621524 | Circuit layout for the simulation of moments of inertia on test stands Test stands for automotive vehicles at the present are required in most cases to permit dynamic tests wherein an essential criterion consists of the simulation of the actual vehicle inertia moment, in order to obtain a realistic acceleration behavior. The... | 11/11/1986 |
| 4612480 | Circuit arrangement for the radio interference suppression in brightness control devices using the phase gating principle Circuit arrangement using carrier frequency control voltage on low voltage power lines for radio interference suppression in brightness control devices using the phase gating principle, comprising a radio frequency interference filter including an interfe... | 09/16/1986 |
| 4611634 | High pressure accumulator A high pressure accumulator for supplying working fluid of a hydraulic control system includes a cylinder, walls disposed on ends of the cylinder, a piston movable within the cylinder defining a space for the working fluid on one side of the piston and a ... | 09/16/1986 |
| 4590136 | Electrochemical storage cell of the alkali metal and chalcogen type Electrochemical storage cell of the alkali metal and chalcogen type with at least one anode chamber and one cathode chamber which are separated from each other by an alkali ion-conducting solid electrolyte and are bounded at least in some regions by a met... | 05/20/1986 |
