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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 |
| 4909683 | Position indicating mechanism A position indicating mechanism for a milling machine or the like includes a position indicator having a rail and a position indicating scale slidably mounted thereto to provide a digital readout of the position of the scale along the length of the rail. ... | 03/20/1990 |
| 4907337 | Apparatus for machining a workpiece of wood, in particular wood beams The drive means (3) is arranged directly on the tool (2) and can be moved together therewith about a plurality of axes (A, B, C and D). The drive means is provided with a tool holding means for automatically delivering or receiving tools in a tool magazin... | 03/13/1990 |
| 4902025 | Self-clamping or self-tightening chuck To provide for an axially short self-tightening chuck, a spiral spring (22) is located inside the chuck to couple together a cylindrical surface (24) formed on the chuck spindle, for example on an extending flange (17) thereof and a cylindrical surface (2... | 02/20/1990 |
| 4895482 | Countersink forming tooling Tooling to form a countersink and counterbore in a workpiece includes: (a) a first part defining an axis and that extends axially forwardly in a bore hole in the workpiece, (b) a rotatable carrier connected with that first part, (c) and a cutter blade on the carrie... | 01/23/1990 |
| 4881309 | Flexible machining system A flexible machining system includes a four axis double end slant bed unit which can be operated as a single or double spindle chucker, a precision boring machine, a way-type machine, a lathe or an automatic bar feeder. By providing the unit with a fifth ... | 11/21/1989 |
| 4881858 | Tool offset indicator A tool offset indicator for setting up cutting, milling and drilling operations in manually or programmable numerically controlled machines is provided. The tool offset indicator includes a block of insulating material interposed between electrically cond... | 11/21/1989 |
| 4880245 | Chuck for concrete slab dowels A chuck for use in screwing one threaded member into another threaded member has a housing with a polygonal socket on one end for receiving a polygonal drive head of a wrench. The housing has a conical bore converging from the face toward the socket. A pl... | 11/14/1989 |
| 4880247 | Cutting tools A combination of a cutting tool (10) and a holder (14) defining a socket (13) for receiving a shank (12) of the cutting tool, wherein the shank includes a slot (17) extending transversely to its longitudinal axis, an elongate locking bar (20) mounted in t... | 11/14/1989 |
| 4878287 | Process and apparatus for positioning a bale hoop parting device A bale of fibrous material bundled by metal hoops is pressed against an elongated guide, with at least one sensor disposed at the guide for producing signals in response to the presence of metal, a parting device adapted to sever a hoop being displaceable... | 11/07/1989 |
| 4877360 | Apparatus for locking and/or gripping modular attachments of boring heads, boring bars, intermediate members, adapters, tool holders, hydraulic punches, long tongs, or other mechanical members The present invention concerns an apparatus for locking and/or gripping modular attachments of boring heads, boring bars, intermediate members, adapters, tool holders, hydraulic punches, long tongs, or other mechanical members. The apparatus comprises one... | 10/31/1989 |
| 4872787 | Method of drilling printed circuit board In a method of drilling a printed circuit board according to the present invention, an entry feed rate at which a drill is fed into the printed circuit boards during the initial stage of drilling is made slightly smaller than a drilling feed rate at which... | 10/10/1989 |
| 4869627 | Guide device for a deep drilling tool A guide device for a deep drilling tool of a deep drilling machine including at least one guide jaw having a guide surface for guiding the elongated shaft of the drilling tool. The guide jaw has an outer surface which extends in a circumferential directio... | 09/26/1989 |
| 4868960 | Transfer machine In a transfer machine of the type that workpieces are transferred to a plurality of machining stations one after another by reciprocatively moving a horizontally extending transfer bar in a vertical direction and a longitudinal direction thereof, a plural... | 09/26/1989 |
| 4866824 | Centering mechanism Apparatus (10) for centering an integrated circuit device (12) along X and Y axes (95, 97) with respect to a Z axis (39). First and second jaw pairs (98, 100), are actuated so that corresponding jaws of each pair are, at all times, disposed along their re... | 09/19/1989 |
| 4865495 | Fluid inducer A fluid inducer for mounting to an oil-hole drill sleeve includes at least two removable sections for easy replacement of internal O-rings without the need for removal of the drill sleeve or drill bit from the drilling machine. The inducer includes a cyli... | 09/12/1989 |
| 4865493 | Apparatus and method for opening combination safes An apparatus and method are provided for precisely positioning a locksmith tool in the area of a dial ring of a combination lock of a safe. The apparatus includes a derrick that holds and supports the locksmith tool. An offset, annular base forms a part o... | 09/12/1989 |
| 4862570 | Apparatus for removal of scale from hot-rolled steel strip An apparatus is provided for removing scale from a hot rolled steel strip by rolls acting by grinding and/or milling so that these rolls are uniformly effective in all regions of the steel strip and an appropriate uniform removal of the scale layer occurs... | 09/05/1989 |
| 4861202 | Boring head A boring head for precision jig boring and characterized by a body with a transverse bore and carrier lapped therein to carry a boring bar eccentric to a turning axis and held erect by an adjustment, and a micrometer adjustment anchored by an anti-backlas... | 08/29/1989 |
| 4861048 | Jaw assembly for lathe chuck A lathe chuck includes three jaws each comprising a reciprocating jaw member to which an indexible, hexagonal, soft metal clamping member is detachably secured. Each jaw member has a raised portion which engages in a recess in the underside of the clampin... | 08/29/1989 |
| 4856945 | In-situ portable boring-reaming system A portable, in-situ, omni-directional orientable assembly for refurbishing a bore in a workpiece and including a cutting bar with various tool holding options, a main jig assembly for effecting azimuthal alignment, rotation and translation of the cutting ... | 08/15/1989 |
| 4856946 | Threading assembly A threading assembly including biasing means for biasing a threading tap or die in a selected direction and a reversible ratchet assembly for applying a torque about an axis coinciding with the axis of the tap or die. An alignment guide concentrically ali... | 08/15/1989 |
| 4856948 | Milling device for working, and in particular for trimming the edges of sheet metal strips, sheet metal plates or the like A milling device for working, and particularly for trimming the edges, of sheet metal strips, sheet metal plates, and the like. The workpiece is movable in any desired shape or direction in relation to the working position between guide rollers. The milli... | 08/15/1989 |
| 4854787 | Boring device A boring device has a spindle moving mechanism which retards a tool spindle when the spindle rotates through a predetermined angle. The mechanism has coaxial first and second thrust rings. Thrust balls are disposed between the thrust rings in rolling cont... | 08/08/1989 |
| 4850759 | Tool for metal cutting The present invention relates to a tool for metal cutting, said tool in working position preferably rotating around its longitudinal center axis, and that the tool comprises a cutting body (10;10a;10b;10c) and a shaft (12;12a;12b;12c), that supports the c... | 07/25/1989 |
| 4850757 | Rotary cutting tool A rotary cutting tool including an elongated generally cylindrical holder having a recess into which is fitted a disposable cutting insert. The insert is held in place by a clamping member which bears against a surface of the insert and which is attached ... | 07/25/1989 |
| 4850753 | Positive feed device A gear train between an input shaft and an output shaft includes an output gear, through which the output shaft moves axially, and an intermediate gear coaxial with a control shaft carrying an idler gear meshing with a nut threaded on the output shaft. Th... | 07/25/1989 |
| 4850754 | Automatic drilling machine A drilling machine operable to drill holes in desired patterns and diameters in circuit boards and similar items and the machine is provided with a base upon which a planar support is movable parallel to the base respectively in directions transverse to e... | 07/25/1989 |
| 4848980 | Dust collector adaptor for electric drills A corrugated rubber device encompassing a relatively rigid and yet expandable larger end to provide a snug fit on the drilling end of electric drills. This corrugated rubber device has recoil capabilities to accommodate the penetration of the drill bit as... | 07/18/1989 |
| 4846483 | Mandrel system for receiving cup having side wall ribbed interior surface for printing on exterior surface of side wall In a mandrel system for receiving a cup-like product having a side wall with a ribbed interior surface, the exterior portion of the mandrel wall is adapted to firmly engage the interior surface of the product side wall in the regions between the ribs and ... | 07/11/1989 |
| 4844669 | Insert boring tool and cutting insert therefor An insert boring tool includes a tool body and a cutting insert releasably mounted thereon. The insert includes a plate defined by front and rear surfaces and a plurality of side faces and having a plurality of corners where adjacent side faces intersect ... | 07/04/1989 |
| 4843704 | Tool exchange apparatus A tool exchange apparatus comprises a first tool exchange arm for removing a previous tool mounted on a machine tool and returning the removed previous tool on a tool magazine and a second tool exchange arm for removing a new tool arranged on a tool magaz... | 07/04/1989 |
| 4844488 | Chuck actuator system and method A keyless chuck operating system comprises a hollow, generally cylindrical body formed of rubber or other similar substance preferably having a shore hardness in the range of 50 to 60. The body has a central cavity therein formed to fit firmly over a chuc... | 07/04/1989 |
| 4842288 | Keyless chuck A keyless chuck comprises a plurality of jaws slidably fitted respectively in bores formed in a body. A substantially cylindrical, first operating component is mounted on the body rotatably and axially movably, and is provided with female threads in engag... | 06/27/1989 |
| 4838742 | Method and apparatus for making an undercut drilled hole in a fixed base The invention relates to a method of and apparatus for making an undercut in a drilled hole in a fixed base, such as concrete, masonry or the like. The shank of a milling cutter is supported and held eccentrically in the drill hole by means of a supportin... | 06/13/1989 |
| 4837919 | Tool changing assembly for universal milling and drilling machines A tool changing assembly for program controlled milling and drilling machines comprising a vertically movable knee-type unit for the work table, and a vertical milling head. The tool changing assembly includes a power-driven pivotable mounting which is ar... | 06/13/1989 |
| 4838561 | Chuck, particularly for machine tools The chuck includes a structure supporting a table provided with first sliding seats and with second sliding seats which extend radially from the center of the table and respectively accommodate means for centering the workpiece and means for locking the w... | 06/13/1989 |
| 4834596 | Quick change spindle adaptor for tool holder A quick change spindle adaptor for a power driven spindle having an axial bore and a tool holder having a shank axially projected into the spindle. A sleeve is secured upon the spindle and an outer shell is rotatably mounted upon the sleeve and retained t... | 05/30/1989 |
| 4834593 | Device for the drilling of wooden panels with a view to their assembly by dowels A guidance device for drilling panels having a supporting element capable of being fixed on two panels and of receiving a guidance element provided with drill bushes in two different positions for the drilling of an edge of a first panel and for the drill... | 05/30/1989 |
| 4828277 | Self-gradually locking chuck A self-gradually locking chuck for drills or similar devices particularly suitable for portable drills used in surgery. It includes a cylindrical sleeve which can be coaxially fixed to a rotating shaft, a ferrule having a conical section provided internal... | 05/09/1989 |
| 4826364 | One-piece rotary material removing tool of sintered hard metal A one-piece rotary drill or end milling cutter is an extruded product made of sintered hard metal. The front end portion of its shank has one or more cutting edges and its rear end portion tapers in a direction away from the front end portion and is recei... | 05/02/1989 |
