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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 |
| 7204115 | Axial thread-rolling head An axial thread-rolling head comprising a shank and a bearing unit held by said shank and having the profiled rolling dies wherein said shank has an elongate gripping portion, a first clutch portion, a supporting portion for the bearing unit, and a driver portion fo... | 04/17/2007 |
| 7204121 | Method and apparatus for inserting blanks to be threaded in automatic rotary rolling machines A method for inserting blanks to be threaded in automatic rotary rolling machines, in which the step for inserting parts to be machined in the working position occurs at an adjustable, optimized rate, so that the portions of the outer surface of the roller tool affe... | 04/17/2007 |
| 7159429 | Method and device for manufacturing bolt, screw rolling die used therefor, and multiple screw bolt A method and apparatus for manufacturing a bolt capable of mass-producing a multiple screw bolt such as a so-called double screw bolt at a low unit price, and a thread rolling die for use therein. The apparatus for manufacturing a bolt comprises a pair of thread rol... | 01/09/2007 |
| 7156600 | Die for, method of making, and fastener with lobed primary thread lead and interposed dual auxiliary thread lead with improved substrate entry end portion A threaded fastener comprises a first, primary thread lead, and a pair of second, auxiliary thread leads alternatively interposed between successive threads of the first, primary thread lead, except within the vicinity of the tip portion of the fastener so as to def... | 01/02/2007 |
| 7152766 | Metal re-sealable beverage container with pour spout An all-metal beverage can with a pour spout is disclosed. The can includes a can body for containing a beverage and a closure member. The closure contains a metal pour spout and a cap covering the pour spout. The pour spout and cap are in a recessed condition within... | 12/26/2006 |
| 7147406 | Wall structure for retaining soils A retaining wall structure for retaining soil, including a retaining wall including a plurality of non-molded blocks disposed side-by-side and adjacent each other, the retaining wall having a width and a height. The wall structure further includes a plurality of joi... | 12/12/2006 |
| 7076989 | Threaded fastener with dual reinforcing leads for facilitating manufacture of the fastener, thread rolling die for forming the threaded fastener, and method of manufacturing the threaded fastener A new and improved thread rolling die, for forming a new and improved threaded fastener, comprises a plurality of first, primary thread rolling die threads, and a plurality of sets of second, auxiliary thread rolling die threads alternatively interposed between succ... | 07/18/2006 |
| 7065996 | Rolling die for ball screw A rolling die for a ball screw has: a cylindrical portion including a helical protrusion formed in an outer peripheral surface thereof for forming a helical ball groove in a raw material of a screw shaft of the ball screw; and a conical lead-in portion formed in one... | 06/27/2006 |
| 7040131 | Cold forming tool, machine and method Cold forming tool including at least one penetration zone having teeth and a calibration zone having teeth. The teeth having a tooth height that increases substantially from the at least one penetration zone to the calibration zone. A distance between an outer surfa... | 05/09/2006 |
| 7021101 | Method and apparatus for manufacturing a battery terminal with undercut rings A method and apparatus utilizing a radial rolling process to cold form rings on a lead battery terminal with undercuts or overhangs to improve the sealing properties of the rings. The apparatus includes a fixture configured to securely position the battery terminal ... | 04/04/2006 |
| 6959576 | Cold forming of splined transmission hubs A method for cold forming splined transmission hubs is provided. A blank (10) with an inner surface and an outer surface is secured on a tool insert support member (100). The tool insert support member (100) has an internal spline tooth profile ... | 11/01/2005 |
| 6957557 | Threaded fastener with dual reinforcing leads for facilitating manufacture of the fastener, thread rolling die for forming the threaded fastener, and method of manufacturing the threaded fastener A new and improved thread rolling die for forming a new and improved threaded fastener, and a new and improved method or technique of manufacturing the new and improved threaded fastener, is disclosed wherein the new and improved threaded fastener comprises a first,... | 10/25/2005 |
| 6886384 | Process for forming a threaded member A process for the formation of a thread form in a substantially elongate member (1), wherein the thread form includes at least one rib (3) spaced apart from at least one other rib along the elongate member and wherein the thread form has a relatively c... | 05/03/2005 |
| 6708544 | Thread rolling die and process for the production thereof In a rolling die for forming a ball screw by rolling for example, a biting portion is formed on one end of a straight portion while a relief portion is formed on the other end. Further, the helical protrusion on the biting portion and the helical protrusion on the r... | 03/23/2004 |
| 6615632 | Parting tool A parting tool for continuous chipless separation of identical parts from a rotation-symmetric workpiece, includes a cutting roller having a main body advancing a workpiece in a transport direction from an entry side to an exit side. The main body has a s... | 09/09/2003 |
| 6298703 | Roll for a radial thread-rolling head A roll for a radial thread-forming head which has disposed at its circumference a thread-forming profile with a flattened area, a thread entry portion, a thread calibrating portion, and a thread exit portion, characterized in that an annular, continuous g... | 10/09/2001 |
| 6216510 | Method of producing self-lock screw A self-lock screw which has a deep slit so as to facilitate the elastic deformation of the flanks of a thread and enhance the locking effect and which can be produced without the need for skill of a high level and dexterity. A slit (3) which separates the... | 04/17/2001 |
| 5704240 | Method and apparatus for forming threads in metal containers A methods for forming threads in the neck portion of a can made of thin gauge, hard temper metal which minimizes stretching of the metal in the neck portion. The method employs a grooved arbor and roller having a single thread lead around less than 360° ... | 01/06/1998 |
| 5568743 | Axial thread rolling head Axial thread rolling head which comprises a bearing unit including the thread rollers and rotatably supporting said thread rollers by means of eccentric shafts, an axial shank being axially movable with respect to said bearing unit and, in a first axial r... | 10/29/1996 |
| 5417095 | Thread rolling attachment and method One end of a rotating workpiece is threaded by using a single threading roll having on one end thereof a plurality of annular threading ribs the diameters and/or pitches of which increase slightly and progressively from one end of the plurality to the oth... | 05/23/1995 |
| 5307662 | Roll threading apparatus for threading end blank for metal drum container A turntable for supporting an end blank having a tubular flange integral therewith is rotatable about an axis of the tubular flange. An annular threading roll die rotatable with the turntable receives therein the flange of the end blank with a full outer ... | 05/03/1994 |
| 5293765 | Method and apparatus for the manufacture of threaded aluminum containers Deep drawn, deep drawn and stretched, or extruded cylindrical aluminium containers are varnished internally and externally, provided with a twostage neck by drawing in and onto the neck is rolled a thread, followed by cutting to length. The drawing-in of ... | 03/15/1994 |
| 5243843 | Thread forming method and apparatus A method of producing threaded fasteners, particularly screws characterized by a thread root which is substantially wider than the thread crest, which results in seam free threads. The method employs a rolling die with a novel double form thread profile g... | 09/14/1993 |
| 5182937 | Seam-free thread rolling dies A seamless helical thread is formed through the use of a die having a thread profile defining groove which undergoes a smooth transition from a pointed form at the starting end to a finish form. The transition occurs along the portion of the groove length... | 02/02/1993 |
| 4884427 | Method of producing helical internal gear A method of forming a helical internal gear by cold work, wherein a hollow blank is fitted onto a die on a mandrel, which is provided on an outer periphery thereof with a helical tooth profile and, while the blank is clamped and held in both axial directi... | 12/05/1989 |
| 4819469 | Method for rolling tapered threads on bars A machine and process for forming a high strength precision bar joint and more particularly for forming rolled tapered threads on a bar end such as the tapered end of a reinforcing bar used in concrete construction. Such machine and process employs oppose... | 04/11/1989 |
| 4799372 | Process for forming helical screw threads having a flank with zero or negative inclination A process for forming a helical screw thread comprising a flank with negative inclination on the wall of a rotationally symmetrical body (19) such as a metal pipe or tube. A first phase involves producing a screw thread having flanks with a positive incli... | 01/24/1989 |
| 4716751 | Non-slip thread rolling dies Thread rolling dies are disclosed which are provided with a band of roughness extending along the flanks of the thread forming grooves in the dies. The roughened bands provide traction between the blank and the dies so as to establish rolling without slip... | 01/05/1988 |
| 4584247 | Threading deformed bars A method of selecting deformed bar for direct rolling of a thread thereon and also a method of threading such deformed bar. The method comprising rolling a preselected thread onto selected deformed bar without machining the bar in preparation. The bar sel... | 04/22/1986 |
| 4491002 | Method for forming on workpiece resilient thread having closed helical cavity inside the thread A method of forming on a workpiece a resilient thread, having a closed helical cavity inside the thread, includes plastic deformation of the walls of a preformed helical groove whose depth exceeds the depth of the roots of the thread to be obtained. The v... | 01/01/1985 |
| 4485510 | Threaded fastener having minimized length and weight and method to make it A threaded fastener has a pin with a head, a cylindrical shank, a shoulder with reducing diameter, a radius at the least diameter of the shoulder whose region is work-hardened, and a threaded end, in that order. The thread extends into near-adjacency to t... | 12/04/1984 |
| 4472956 | Apparatus for feeding elongated objects Feeding apparatus for elongated objects having a rotary feed member, having a drive for rotating the same at a high speed, spaced apart parallel grooves formed in the outer circumference of the rotary member spaced apart radially from one another, to rece... | 09/25/1984 |
| 4462235 | Method for threading closures A method for threading a closure having cylindrical walls which includes securing the closure in a stationary nest, inserting a threading tool having indentions on the outside thereof into the interior of the closure, moving the closure into a ring having... | 07/31/1984 |
| 4439082 | Apparatus for threading closures An apparatus for threading a closure which includes a vertically movable nest for receiving a closure shell and a vertically movable threading tool which includes a cylindrical threading member having threads on the outside thereof which is receivable wit... | 03/27/1984 |
| 4426870 | Method and tool for making elastic thread having closed helical cavity inside thread profile A method of making an elastic thread having a closed cavity inside the thread profile comprises plastically deforming the walls of a preformed helical groove by means of a thread-forming tool (2). The helical groove is made at least double-start and havin... | 01/24/1984 |
| 4397597 | Method for threading closures A method and apparatus for threading a closure which includes securing the closure in a stationary nest, inserting a threading tool having threads on the outside thereof into the interior of the closure, moving the threading tool into contact with the int... | 08/09/1983 |
| 4393676 | Process for producing connecting member shanks, such as hinges for window and door frames, formed of cylindrical sections of different diameter, with continuous even screw thread, that is with constant pitch A process of producing a threaded shank, particularly for hinges, characterized by comprising in a succession the following steps of: cutting from a continuous wire a stock or cylindrical starting piece substantially having the same volume as the self-thr... | 07/19/1983 |
| 4385429 | Method of manufacturing a clutch plate A clutch is disclosed having an input shaft and an output shaft and having alternate pairs of discs interfitting with each other. Half of the discs being attached to the input shaft and half to the output shaft. The discs are knurled on one side in a groo... | 05/31/1983 |
| 4369644 | High speed two travels thread rolling machine Disclosed herein is a new mechanism for making screws. It consists of two stationary segmented dies and an intermediate rotary die and by means of rotation, the rotary die threads working pieces which become screws. It includes a pneumatic feeding holder ... | 01/25/1983 |
| 4339936 | Annular corrugator Apparatus for producing annular corrugations in the wall of thin metal tubing in the manufacture of corrugated metal hose includes a plurality of dies. Each die comprises a helical rib of greater than 360° extent formed on the inner rim of an annular rin... | 07/20/1982 |
