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 |
| 7251977 | Temper rolling machine of a metal band The invention relates to a method and a machine for temper rolling a metal band including at least two temper rolling units E, E′ each carrying an active cylinder (2) and a set (7, 70) of back-up members mounted rotatably on a transversal chassis ( | 08/07/2007 |
| 7159431 | Method of operating a section straightening machine A section straightening machine is operated by a method which involves passing the structural sections through the array of straightening tools. Section straightening forces are applied to adjustable shafts carrying the tools and adjusters at the service sides of th... | 01/09/2007 |
| 7076985 | Wire winding machine A wire winding machine has a winding wheel that includes a central core having an adjustable outside dimension. A central member and a plurality of outer members are connected with linkages that allow the outside dimension to be adjusted. At least one of the outer m... | 07/18/2006 |
| 6997026 | Quick change metal stud to hemmed track roll forming system An apparatus and method for selectively forming metal stud and track members from sheet material, the apparatus including a stud forming assembly capable of transforming the sheet material into a stud member as the material exits the stud forming assembly, and a tra... | 02/14/2006 |
| 6598445 | Leveling machine and method An assembly and method for leveling a metal strip by working the strip back-and-forth through a plurality of work rolls. Work rolls are disposed for engaging the strip. A backup roll supports the work roll against the strip. A cam roll supports the backup... | 07/29/2003 |
| 5758533 | Imbricated roll planisher and process for its use An imbricated roll planisher comprising, inside a fixed stand, two planishing systems each including a plurality of live planishing rolls with parallel axes, rotatably mounted in a supporting chassis and each associated with at least one row of support ro... | 06/02/1998 |
| 5622072 | Levelling machine for levelling sheet metal and strip A levelling machine for levelling or flattening sheet metal or strip includes upper and lower levelling rolls which are arranged offset relative to each other and which are supported over their length by back-up rolls which, in turn, are supported and arr... | 04/22/1997 |
| 5479806 | Levelling machine, particularly for levelling sheets and strips A levelling machine, particularly for levelling sheet steel and strip steel, includes upper and lower levellerg rolls arranged offset relative to each other. The leveller rolls are supported by back-up rolls arranged in roll stands and supported in crossb... | 01/02/1996 |
| 5394723 | Stand frame for a roller levelling machine A stand frame for a roller levelling machine and including spaced frame posts formed each of two spaced post members, and frame cross-piece members including cross-piece elements which connect each of the two post members forming a frame post, with each c... | 03/07/1995 |
| 5392627 | Leveling machine for metal sheet and strip A leveling machine for metal sheet or strip with upper and lower leveling rollers offset relative to one another and supported by back-up rollers, which are located between web plates lying on adjustment wedges supported on roller blocks and cross ties, i... | 02/28/1995 |
| 5127250 | Roller leveler A roller leveler comprises a raisable upper work roll group, and a lower work roll group, the upper and lower work roll groups being arranged in a zigzag form so that the axes of three work rolls adjacent to each other at upper and lower sides and three p... | 07/07/1992 |
| 5097691 | Adjustable leveler A leveling machine for slit steel which removes bends and bumps in the steel prior to recoiling. The leveler includes top and bottom sets of rollers of varying sizes to accommodate varying gauges of steel. The top of rollers is attached to a frame which p... | 03/24/1992 |
| 4843673 | Strip wiping system A device for wiping liquids from the surface of moving metal strip under tension, such as strip produced by cold rolling mills. The device consists of a plurality of rollers, between which the strip passes, where each roller is supported by a plurality of... | 07/04/1989 |
| 4823582 | Device for planing a sheet metal strip under tension In a device for planing a sheet metal strip under tension as applicable in particular to rolling mills, the strip is passed between at least two small-diameter working rolls while being subjected to alternate flexural deformations in opposite directions a... | 04/25/1989 |
| 4635458 | Leveling apparatus A leveling apparatus having a movable frame which supports a plurality of back-up roller assemblies, each of which is individually positionable to vary the penetration of a portion of the work rolls it contacts such that the penetration of the entry work ... | 01/13/1987 |
| 4587822 | Tension leveling apparatus A leveling apparatus for leveling strips of metallic material comprising a support housing; a guide tube, rotatably attached to the support housing, having a hollow interior and a longitudinal slot; a cylindrical support roll, rotatably attached to the ho... | 05/13/1986 |
| 4551878 | Strip wiping system An improved device for wiping liquids from the surface by moving metal strip under tension, such as strip produced by cold rolling mills, is disclosed. The device consists of three rollers, between which the strip passes, where each roller is supported by... | 11/12/1985 |
| 4454738 | Roller leveler and method of operating same A roller leveler is provided with mechanisms to continuously sense and to measure roller deflection and to automatically correct the deflection based on the degree of deflection sensed. The sensing mechanisms are mounted on a structure which is isolated f... | 06/19/1984 |
| 4380921 | Roll leveller A roll leveller having a frame, a plurality of parallel lower rolls rotatably mounted on the frame and positioned side by side in the direction in which a material to be levelled is fed, a bracket having a plurality of parallel upper rolls rotatably mount... | 04/26/1983 |
| 4353237 | Method of rolling strip In a method of rolling a strip between work rolls with small and large diameters, while tensioning and bending the strip, the diameter ratio of the small and large work rolls is chosen from the range of 1/1.5 to 1/10, at least one of the work rolls or of ... | 10/12/1982 |
| 4074555 | Method of and apparatus for improving hot-rolled sheet-metal strips A sheet-metal strip coming hot from a rolling mill is subjected to alternate bending in opposite directions before being wound on a mandrel, preferably while still in a temperature range of about 600° C to 800° C in the case of steel. The bending is car... | 02/21/1978 |
| 4043162 | Roller assembly for sheet-bending head and method of making roller bearings therefor An apparatus for stretching sheet-metal strips includes several bending heads removably mounted between pairs of tension rollers, each bending head comprising a slender deflecting roller journaled in two end bearings and supported by heavier, shorter back... | 08/23/1977 |
| 3995920 | Roller bearing An improved surface for an outer race member of a roller bearing by providing an annular curved surface between the circumferential crown surface and the annular corner radius surface. This improved surface has one end thereof tangent to the crown surface... | 12/07/1976 |
| 3958439 | Method for recovering ductility of a cold rolled metal strip The present invention relates to a method and apparatus of recovering ductility of a cold rolled metal strip. The metal strip is greatly bent a few times under tension along work rolls of small diameter rotating freely with extremely low friction or on fl... | 05/25/1976 |