Bizarre Patents
Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 5287996 | Liquid soap dispenser with built-in pump A liquid soap dispenser suitable for installation on a mounting surface comprises a socket including an upper part having an upper edge, a tubular piece, the socket and the tubular piece being mountable on the mounting surface. A tubular pump including an... | 02/22/1994 |
| 5283918 | Vehicle seat cushion A seat cushion is disclosed, in particular for an aircraft seat, with a supporting body of a foamed plastic with a spring core embedded therein, and a flameproofing layer of flame-retardant plastics foam, to which a covering material is secured, preferabl... | 02/08/1994 |
| 5279043 | Length measuring system A length measuring system comprises an elongate scale member adapted to be scanned for generating measured-length signals, a tubular scale member carrier defining an internal cavity housing the scale member and including a mounting wall, a connection of t... | 01/18/1994 |
| 5279524 | Pedal crank drive for a bicycle In a pedal crank drive for a bicycle, comprising two pedal cranks (4a, 4b) which are non-rotatably interconnected by a pedal crank shaft (3), a chain sprocket (5), which has at least one gear ring (6) and is mounted to be rotatable relative to the pedal c... | 01/18/1994 |
| 5275582 | Disposable syringe A disposable syringe comprises a syringe cylinder and a syringe piston. The syringe cylinder is open at one end and at its other end has an end wall, which is closed with the exception of a region adjacent to a needle holder. The syringe piston comprises ... | 01/04/1994 |
| 5275978 | Colored crystallized glass article and method for producing the same A crystallized glass article having a surface pattern like granite, marble or other natural stones with a line pattern of a desired color or colors, which is formed by fusion bonding small masses of a crystallizable glass material mixed with inorganic pig... | 01/04/1994 |
| 5273167 | Apparatus for stacking individual one piece receptacles Apparatus for the quality control of individual, one-piece receptacles, which are open at one end. The individual, one-piece receptacles are preferably aligned, in several groups, side by side, similarly with respect to their spatial orientation. The rece... | 12/28/1993 |
| 5261688 | Adjustable coupling device for a ski An adjustable coupling device for coupling a ski boot to a ski. The coupling device has a longitudinal axis and includes, a toe binding, a heel binding and length adjustment device. The length adjustment device is capable of altering the distance between ... | 11/16/1993 |
| 5255320 | Hearing aid A single-channel circuit for a hearing aid for persons with an impaired hearing faculty has a pre-amplifier and an output amplifier, a microphone and an earphone, as well as a full-wave rectifier circuit for producing a control voltage for a voltage-depen... | 10/19/1993 |
| 5248185 | Seat with foamed plastic padding and process for its manufacture A seat (1), in particular for vehicles, with foamed plastic padding (4, 5), has a supporting body (7) made of an open-cell elastic foamed plastic having a first specific gravity. A flame-retardant layer (12) made of an open-cell elastic foamed plastic hav... | 09/28/1993 |
| 5243963 | Furnace for solid fuels, especially for pellets A furnace for solid fuels is especially for pellets. This furnace includes a combustion chamber, a holder pan for the combustion material positioned in the combustion chamber, and a combustion material transport device located between the holder pan and a... | 09/14/1993 |
| 5199817 | Process of providing an elongate underground cavity In the provision of elongate underground cavities having a large volume are to be provided, particularly in the construction of underground railroad stations having at least two stories, it is desired to avoid a need for excavating an open pit and to mini... | 04/06/1993 |
| 5183001 | Float A float having a substantially prismatic and preferably parallelepipedic body, which has corner edge portions provided with corner-connecting elements having eyes and recesses for receiving and interlocking with connecting bolts for connecting a plurality... | 02/02/1993 |
| 5178677 | Coating apparatus for applying a coating composition to substantially flat baked pieces, particularly cookies or the like In a coating apparatus for applying a coating composition to substantially flat baked pieces, particularly cookies or the like, which apparatus includes a supply container (15) and a metering device (14) succeeding that container, it is proposed to provid... | 01/12/1993 |
| 5172635 | Track working machine for the controlled lowering of a track A track working machine for the controlled lowering of a track comprises a machine frame, at least one undercarriage supporting the machine frame on the track for mobility in an operating direction, a track stabilization unit for compacting the ballast wh... | 12/22/1992 |
| 5172637 | Track surfacing machine for the controlled lowering of the track A continuously advancing dynamic track stabilization machine comprises a first cross level measuring element arranged at the machine frame front end and generating reference signals corresponding to the measured cross level at successive points as the mac... | 12/22/1992 |
| 5168787 | Apparatus for trimming three-dimensional workpieces An apparatus for trimming three-dimensional workpieces made, e.g., of plastic comprises a bottom platen for supporting the workpieces and a cutter, which is movable relative to the bottom platen along a line of cut. To permit an automatic trimming by mean... | 12/08/1992 |
| 5161312 | Machine for monitoring the vertical position of a contact wire of an overhead line In a machine for monitoring the vertical position of a contact wire of an overhead line extending above a track, which comprises a self-propelled machine frame including a superstructure, an undercarriage supporting the machine frame on the track and havi... | 11/10/1992 |
| 5141527 | Ceramic sintered body and method of producing it Ceramic sintered body, in particular abrasive grain, based on -Al2 O3, said body being arranged in such a manner that improved abrasive results are achieved, said body being bound into a structure by means of a glass-like cera... | 08/25/1992 |
| 5137399 | Apparatus for processing workpieces An apparatus for processing workpieces, comprises a fixing deck, which has a supporting surface and is provided with fixing device, and a numerically controlled tool unit, which is movable over the supporting surface. In order to effect a reliable fixing ... | 08/11/1992 |
| 5103963 | Assembly method and support In a system for fully automatically assembling a plurality of parts into a workpiece, each part is conveyed to the respective work stations in a holder which is associated with the workpiece at the work station where the part is removed from the holder an... | 04/14/1992 |
| 5085487 | Seat with foamed plastic padding and process for its manufacture The invention relates to a seat, in particular for vehicles, with a padding of foamed plastic with a supporting body made of an open-cell elastic plastic foam having a first specific gravity and with a flame-retardant layer made of an open-cell elastic pl... | 02/04/1992 |
| 5058249 | Apparatus for needling a nonwoven web It is desired to provide an apparatus for needling a nonwoven web with a brushlike pierceable support and to provide surface patterns independently of a control of the depth of penetration of the needles. To that end the bristles of the covering of bristl... | 10/22/1991 |
| 5053369 | Sintered microcrystalline ceramic material Sintered microcrystalline ceramic material based on -Al2 O3 with an addition of 0.01 to 2.0 weight percent of a cerium compound, consisting of a microcrystalline matrix and 0.1 to 30 volume percent whisker-like needles, whereb... | 10/01/1991 |
| 5049081 | Low-voltage lighting fixture A low-voltage lighting fixture comprises a pair of parallel electrical conductor rails, and an electrical current collector shoe slidingly mounted on the conductor rails. The collector shoe comprises a pair of collector heads slidingly mounted on the rail... | 09/17/1991 |
| 5045405 | Sliding surface bearing for high loads In a sliding surface bearing for high loads, comprising a sliding layer (2), which has physically been applied in a vacuum directly to a bearing metal layer (1) and consists of a base material with finely divided inclusions (6), which are substantially in... | 09/03/1991 |
| 5038916 | Transfer assembly for freezer An apparatus for charging products to be frozen onto a freezer plate comprises a conveyor arranged to place the products in front of a charging opening of a freezer, and a device for transferring the products in a translatory movement from the conveyor th... | 08/13/1991 |
| 5035033 | Needle board for an apparatus for needling a non-woven fabric A needle board for an apparatus for needling a non-woven fabric comprises a carrier plate, which is provided with an elastic layer for retaining needles, which are detachably inserted in through holes and have angled needle butts, which are supported on t... | 07/30/1991 |
| 5035120 | Freezer A freezer comprises an insulated housing with two opposite walls defining an interior chamber therebetween, the walls respectively defining a charging opening and a discharge opening for respectively charging products to be frozen into the interior chambe... | 07/30/1991 |
| 5033726 | Apparatus for spreading sheet material An apparatus for rationally spreading a continuous length of different types of sheet material on a surface of a work table comprises a sheet material spreading carriage movable over the work table surface between a sheet material delivery station and a s... | 07/23/1991 |
| 5032413 | Process for testing individual one piece receptacles Process and apparatus for the quality control of individual, one-piece receptacles, which are open at one end. The individual, one-piece receptacles are preferably aligned, in several groups, side by side, similarly with respect to their spatial orientati... | 07/16/1991 |
| 5032414 | Process for stacking individual one piece receptacles Process and apparatus for the quality control of individual, one-piece receptacles, which are open at one end. The individual, one-piece receptacles are preferably aligned, in several groups, side by side, similarly with respect to their spatial orientati... | 07/16/1991 |
| 5031542 | Mobile track tamping machine A mobile track tamping machine comprises a machine frame, undercarriages mounting the machine frame on a track, and a plurality of independently transversely and vertically adjustable tamping tool units aligned transversely to the track, each tamping tool... | 07/16/1991 |
| 5028258 | Process of controlling the slag in a top-blowing steelmaking converter In the operation of a top-blowing steelmaking converter having at least one blowing lance, the distance of said lance from the surface of the molten metal bath is controlled in dependence on the sound levels of the blowing noise measured through the slag ... | 07/02/1991 |
| 5021650 | Method of electronically correcting position errors in an incremental measuring system and measuring system for carrying out the method In the operation of an incremental measuring system, a measuring scale is scanned for generating periodic sinusoidal, analog measured-value signals. Digital countable signals are derived from the measured-value signals in conjunction with an electronic su... | 06/04/1991 |
| 5016324 | Feeder for supplying fibers to an apparatus for forming a preliminary web A feeder for supplying fibers to an apparatus for forming a preliminary web having a holding shaft, to be supplied with fibers from above through a conveying line, and a distributor, which is disposed between the holding shaft and the conveyor line and se... | 05/21/1991 |
| 5014510 | Exhaust system, particularly for two-stroke cycle internal combustion engines In an exhaust system, particularly for two-stroke cycle internal combustion engines, at least that portion which adjoins the internal combustion engine consists of two joined shell sections made of sheet metal and contains a catalytic converter. In order ... | 05/14/1991 |
| 5012642 | Exhaust system for two-stroke cycle internal combustion engines An exhaust system for two-stroke cycle internal combustion engines comprises a diffuser, which is adapted to be connected to the internal combustion engine, a baffle, which is provided downstream of the diffuser, a catalytic converter, which is disposed b... | 05/07/1991 |
| 5010655 | Incremental measuring system A scale member is provided with a scale, which can be optoelectronically scanned. In association with that scale, a scanning unit is provided, which comprises scanning sets for generating measured-value signals, and an evaluating unit is provided for deri... | 04/30/1991 |
| 5007177 | Incremental measuring system The incremental measuring system comprises a scale member with an incremental scale and a scanning unit comprising scanning sets for generating analog measured-value signals in response to the scanning of the scale. The system also comprises an evaluating... | 04/16/1991 |
