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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 |
| 7111882 | Reinforced impact beam with woven fabric An impact beam as subject of the invention comprises a polymer matrix and a metal reinforcing structure for impact reinforcement, which metal reinforcing structure comprises at least one woven fabric. The woven fabric comprises metal cords being essentially parallel... | 09/26/2006 |
| 6881479 | Reinforcement fiber bundle and production method of such reinforcement fiber bundle A reinforcement fiber bundle and method for joining reinforcement fibers to reinforcement fiber bundles for reinforcement wherein a curable material is provided in which reinforcement fibers are bundled in a substantially parallel position and at least at the ends a... | 04/19/2005 |
| 6707295 | Method for distinguishing between semi-soft and soft magnetic material A method for distinguishing between a semi-soft magnetic material, having a magnetic saturation field H sub s ranging from 100A/m to 3000 A/m, and a soft magnetic material, having a magnetic saturation field H sub s ranging from 3 A/m to 100 A/m, includes (a) emitti... | 03/16/2004 |
| 6607998 | Burner membrane comprising a needled metal fibre web A burner membrane has at least one layer consisting of a compressed, needled fiber web with a porosity of between 60% and 95%, and that is constructed of heat-resistant stainless steel fibers. A method for its manufacture includes the steps of providing a... | 08/19/2003 |
| 6328887 | Tow wound filter cartridge A tow wound filter cartridge comprises a permeable core and one or more tows wound in a helicoidally or diamond-like shaped way or serpentine-like way around the core, having a zero twist degree, in order to obtain a filter rating of below 75 micrometer. ... | 12/11/2001 |
| 6311466 | Steel cord with waved elements A steel structure adapted for the reinforcement of elastomeric members has steel elements containing a plurality of steel filaments at least one of which filaments is provided with first and second crimps. The first crimp lies in a plane that is substanti... | 11/06/2001 |
| 6149424 | Undulated burner membrane A membrane for radiant gas burners comprises a fabric (18) of metal fibers. The membrane has a surface which has a permanent undulation to such a degree that its surface area is at least five per cent greater than the surface area of a comparable flat mem... | 11/21/2000 |
| 6045910 | Steel wire element for mixing into subsequently hardening materials Steel wire element for mixing into subsequently hardening soft materials includes hook-shaped ends and a middle portion the length/diameter ratio of which is between 20 and 100. The middle portion of the element displays a substantially circular cross sec... | 04/04/2000 |
| 5631067 | Heterogeneous knitted fabric Heterogeneous custom knitted fabric for lining the surfaces of molds includes predetermined surface zones with different knitted patterns. The knitted fabric can be utilized in devices designed for the shaping of, for example, plates of glass.... | 05/20/1997 |
| 5512380 | Steel cord construction A steel cord (10) adapted for the reinforcement of elastomers, comprises individual steel filaments (12, 14). Some of these steel filaments (12) have a difference in torsion saturation level in comparison with other steel filaments (14). All of the indivi... | 04/30/1996 |
| 5341631 | Double-twisting device with magnetic device for elevating axial forces A double-twisting device (2) includes two half-shafts (4) and at least one flyer (6). The flyer (6) connects the two half-shafts (4) and causes axial forces Fa which are exerted upon the half shafts (4) during rotation. The double-twisting devi... | 08/30/1994 |
| 5342699 | Steel substrate for reinforcement of elastomers The invention relates to a substrate for reinforcing elastomeric polymers whereby at least part of the substrate is made of steel, said part being covered by a layer of an alloy consisting of, apart from impurities, between 4.2 and 6.5% weight of aluminum... | 08/30/1994 |
| 5198307 | Steel strip and method of making A steel strip (1) comprises two to seven round steel filaments (2) lying in parallel adjacent to one another so as to form a single plane of core filaments and one or more filaments (4) which are wrapped around the core filaments in one single wrapping di... | 03/30/1993 |
| 5137782 | Granular composite containing metal fibers and plastic articles made therefrom The granular composite is obtained by chopping a composite strand containing metal fibers, said fibers being embedded as bundles in a plastic and is to be used for the shaping of plastic articles. The metal fibers comprise hardened material which has been... | 08/11/1992 |
| 5088919 | Burner membrane The invention relates to a burner membrane (1) for radiant burner comprising a porous sintered web of inorganic fibres that are resistant to high temperatures, wherein at least the membrane surface (3) opposite from the fuel supply side (2) has been provi... | 02/18/1992 |
| 5071713 | Metal fibers obtained by bundled drawing Metal fibers obtained by the bundled drawing of a composite bundle of metal wires embedded in a metal matrix followed by the electrolytic removal of the matrix so that the surface layers of the fibers contain only a negligible amount (ࣘ0.2% at) of the m... | 12/10/1991 |
| 5057199 | Process and apparatus for the treatment of coated, elongated substrate, as well as substrates thus treated and articles of polymeric material reinforced with these substrates The invention relates to a process for treating an elongated, coated substrate, whereby treatment comprises the application by cathode sputtering of a material containing at least one component and whereby the composition of this material has been chosen ... | 10/15/1991 |
| 4983467 | Compacting of a metal web product made A method of compacting a non-woven sintered metal web (1), characterized in that said non woven metal web (1) as such is isostatically pressed, preferably cold isostatically pressed. The isostatically pressed metal web may be used in filter applications a... | 01/08/1991 |
| 4978586 | Steel substrate with metal coatings for the reinforcement of vulcanizable elastomers The invention relates to a steel substrate with metal coatings for the reinforcement of vulcanizable elastomers, as well as a method for the continuous manufacture of a thus coated substrate and elastomer objects reinforced with said substrate. The substr... | 12/18/1990 |
| 4925539 | Metal fibers obtained by bundled drawing Metal fibers obtained by the bundled drawing of a composite bundle of metal wires embedded in a metal matrix followed by the electrolytic removal of the matrix so that the surface layers of the fibers contain only a negligible amount (ࣘ0.2% at) of the m... | 05/15/1990 |
| 4840214 | Tire belt reinforcing strip and method of making of same A reinforcing strip, and method of making same, specifically adapted for use in reinforcing plies in the belt of rubber tires. The strip comprises a number, preferably 4 to 7, of parallel wires, tightly bound together by a wrapping wire or a binder. This ... | 06/20/1989 |
| 4828000 | Steel substrate with brass covering layer for adhesion to rubber Steel substrate with brass covering layer to enhance adhesion to rubber particularly in humid atmosphere above ambient temperature wherein said covering layer has at its surface a (Cu/Cu+Zn)-ratio of not more than 0.2 the respective Cu and Zn contents bei... | 05/09/1989 |
| 4820912 | Method and apparatus for checking the authenticity of documents A method and an apparatus for checking the authenticity of documents, such as banknotes or credit-cards. The documents comprise a number of randomly distributed conductive fibres of which the distribution is scanned by microwaves and the response is trans... | 04/11/1989 |
| 4813653 | Fluidized bed apparatus Fluidized bed apparatus 1 for use in heat treating metal articles in a bed of fluidized particles 6 includes a heat insulated structure 2 and a removable module 4. The module is a metallic assembly integrating a vessel 5 for receiving the fluidizable part... | 03/21/1989 |
| 4767472 | Method for the treatment of steel wires Steel wires W are `patented` by heating in a furnace 6 to the austenitization temperature and then cooled to a range in which austenite is transformed into pearlite by passing the wires through a water cooling device 1. This cooling device comprises a tan... | 08/30/1988 |
| 4713153 | Process and apparatus for cleaning by electrochemical pickling with alternating current of specified frequency A process and apparatus for the electrochemical pickling of ferrous and other metal wires is disclosed. The process, which is particularly suitable for high-carbon steel wires, involves the application of a low voltage alternating current to the wires in ... | 12/15/1987 |
| 4628683 | Steel cord twisting structure A steel cord, for use in the reinforcement of resilient articles such as rubber tyres, comprises a central bundle of wires surrounded by a circumferential layer of helicoidally twisted wires. In the central bundle, one can distinguish a core and a surroun... | 12/16/1986 |
| 4612792 | Method of manufacturing fatigue resistant cables In order to improve the fatigue resistance of a cable, particularly a rubber adherable cable for reinforcing rubber articles such as vehicle tires, substantially uniformly distributed residual compressive stress is induced in substantially the complete pe... | 09/23/1986 |
| 4569709 | Method for retreading pneumatic tires This invention relates to a method for applying a tread to a tire, whereby around a toroidal tire a layer of non-vulcanized rubber is applied, which will form the tread area of the tire after vulcanization in the vulcanization press; and whereby the thus ... | 02/11/1986 |
| 4515905 | Process for forming a catalyst and the catalytic product produced by the process A catalyst comprising a metallic carrier having a catalytically active metal-containing surface layer, the catalytic metal being other than a noble metal, wherein the catalytically active metal-containing surface layer is formed directly on the carrier by... | 05/07/1985 |
| 4486255 | Method and machine for removing at least one layer of reinforcing elements from a breaker or belt of a rubber tire This invention relates to a method and machine for removing at least one layer of reinforcing elements from a breaker or belt of a rubber tire. According to the method of the invention for removing at least one layer of reinforcing elements, such as steel cord... | 12/04/1984 |
| 4481996 | Fatigue resistant cables In order to improve the fatigue resistance of a cable, particularly a rubber adherable cable for reinforcing rubber articles such as vehicle tires, substantially uniformly distributed residual compressive stress is induced in substantially the complete pe... | 11/13/1984 |
| 4420523 | Energy-absorbing laminate The invention relates to an energy-absorbing laminate with improved torsion strength, particularly a ski, comprising a rigid core which is covered on at least part of its plane surfaces with a grid structure (2). The grid structure comprises a number of s... | 12/13/1983 |
| 4408156 | Sheet articles of non-conductive material marked for identification purposes, and method and apparatus for identifying such articles A method of producing an identification signal for a sheet article of non-conductive material, which article is marked for identification purposes by the incorporation therein of a small quantity of very thin conductive fibers which are capable of absorbi... | 10/04/1983 |
| 4332862 | Welded flexible screen deck A welded flexible screen deck comprising a series of parallel screen rods and transverse supporting rods wherein the supporting rods are secured at the back side of the screen and have a cross-sectional profile with a substantially rectangular body portio... | 06/01/1982 |
| 4305433 | Steel cord fabric having sinusoidal warp chords and straight weft chords for reinforcing elastomeric articles and articles reinforced therewith A fabric for reinforcing elastomeric or other plastic materials comprising a steel cord warp and a steel weft wherein the warp cords are substantially sinusoidal and have an elongation of about 1-2% at 10% of the breaking load of the fabric and the weft e... | 12/15/1981 |
| 4284667 | Reinforcing member for castable material and process of mixing reinforcing elements with said material Reinforcing members for the reinforcement of hardenable or settable material such as concrete or mortar are disclosed. The reinforcing members comprise a plurality of wire elements such as fibers united by a binder which loses its binding ability when mix... | 08/18/1981 |
| 4278726 | Energy absorbing elements comprising rigid non-elastomeric layer and visco-elastic layer with twisted fiber bundles embedded therein An energy absorbing element such as a spring, shock absorber or vibration damper in the form of a laminated structure comprising at least one rigid non-elastomeric layer such as a reinforced plastic material bonded to a visco-elastic layer such as a vulca... | 07/14/1981 |
| 4255496 | Steel wire reinforcing elements with a brass-cobalt alloy adhesive coating A steel wire element useful in the reinforcement of rubber compositions in which the steel wire is provided with an adhesive coating comprising a brass alloy containing 58% to 75% copper, and cobalt in an amount sufficient in use to improve the adhesion b... | 03/10/1981 |
| 4251238 | Method and apparatus for demisting gases Method and apparatus for demisting gases wherein a stream of gas containing submicron liquid particles is caused to pass through a filter material comprising at least in part a material having a porosity of at least 0.985.... | 02/17/1981 |