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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 |
| 7749035 | Buoyancy clamp and method of application A clamp for securing to a pipe or flowline for mounting buoyancy thereon, the clamp comprising: (i) a clamp body (2) having surfaces against which buoyancy may abut, (ii) a strap (6) for urging the clamp towards the pipe, and (iii) a radially resilient... | 07/06/2010 |
| 7284665 | Method and apparatus for processing articles Apparatus is described for processing articles. It has a hollow drum having permeable walls. At one end there is an inlet for receiving articles onto an inside surface of the permeable walls. At the other end is an outlet for discharging articles from the drum. The ... | 10/23/2007 |
| 7140180 | Wave energy converter (WEC) device and system A wave energy converter system comprises two floats; a first being generally flat and heaving up and down in phase with passing surface waves on a body of water, and the second being elongated and heaving up and down out of phase with the passing waves. Preferably, ... | 11/28/2006 |
| 6983128 | Radio control transmitter and receiver Radio control is used for different types of models, e.g. aircraft, cars and boats. Commonly, a number of different radio channels are allocated in a frequency band for use in radio control. If a modeller finds her or his intended channel in use, s/he can either wai... | 01/03/2006 |
| 6804894 | Parallel rule A parallel rule is disclosed having two component rules (4, 6) each providing one of two opposed parallel straight edges. A linkage (10) allows relative movement of the rules in a direction orthogonal to the straight edges but prohibits relative moveme... | 10/19/2004 |
| 6768216 | Wave energy converters utilizing pressure differences An elongated cylinder is fully submerged, in vertical orientation, just below the mean water level of, e.g., and ocean, and of a length, dependent upon surface waves of preselected wavelength, such that the top of the cylinder experiences relatively large pressure v... | 07/27/2004 |
| 6738488 | Protection and solvent washing of in-canal hearing aids An otherwise conventional in-canal hearing aid, including a receiver providing a sound output port typically facing directly towards the ear drum of a user, is provided with a hood disposed between the sound port and the ear drum completely shielding the sound port ... | 05/18/2004 |
| 6685315 | Bifocal lenses Bifocal contact and intraocular lenses are described wherein a viewing area which has an extend generally corresponding to the maximum pupil area of the wearer, said viewing area having a central circular refractive zone having a first focal length corres... | 02/03/2004 |
| 6617705 | Protection arrangement for natural energy power generation systems Protection against damage caused by excessively high input energies, e.g., from ocean storms, is provided in energy converting systems by, in response to the detection of excessively high input energies, changing the electrical impedance of the electrical... | 09/09/2003 |
| 6519027 | Polarization mode dispersion measurement Four different light signals, all of the same optical frequency, but, having different states of polarization, are transmitted through an optical device and the mean signal delay of each of the light signals is measured. Calculations, based upon the relat... | 02/11/2003 |
| 6449373 | Protection and solvent washing of in-canal hearing aids An otherwise conventional in-canal hearing aid, including a receiver providing a sound output port typically facing directly towards the ear drum of a user, is provided with a hood disposed between the sound port and the ear drum completely shielding the ... | 09/10/2002 |
| 6428588 | Filter cleaning apparatus The present invention is concerned with the cleaning of fouled air filters to alleviate the problems caused by disposal of such filters as waste and to reduce the cost of maintenance of the many apparatus requiring air filters. The present invention provi... | 08/06/2002 |
| 6424079 | Energy harvesting eel A piezoelectric power generator, particularly for use in a flowing fluid stream, comprises an elongated, flexible central layer of a dielectric material having, spaced axially along opposite sides thereof, a plurality of separate piezoelectric elements ea... | 07/23/2002 |
| 6338591 | Removable, spring biased fastener A spring biased mechanical fastener comprises two side-by-side first rods fixedly secured at first ends to an end support. The two first rods terminate in two oppositely facing detents, and each rod includes a V-bent camming surface. A horizontal bar moun... | 01/15/2002 |
| 6291904 | Wave energy converter utilizing pressure differences An open ended tube is mounted in fixed, vertical orientation within a body of water with the top and bottom ends of the tube at preselected depths relative to a mean water level when preselected waves with which the invention is designed for use are prese... | 09/18/2001 |
| 5953474 | Optical fiber coupler An optical coupler having two prongs extending axially therefrom in opposite directions comprises a first connector comprising a first prong extending outwardly from a first end of a first elongated tubular member. A first coupling sleeve is concentricall... | 09/14/1999 |
| 5913780 | Method and device for protection against roosting birds The device (30) comprises a triangular hollow section having a apertures (5) in its mutually perpendicular sides. It is mounted on a ledge (L) of a building and has an upper surface which is inclined sufficiently to prevent birds, paticularly pigeons, fro... | 06/22/1999 |
| 5842387 | Knife blades having ultra-sharp cutting edges and methods of fabrication Knife blades having exceptionally sharp cutting edges are formed from wafers of monocrystalline silicon using known semiconductor processing technology. In one embodiment, an elongated ridge having a flat top covered by an etchant mask is etched to underc... | 12/01/1998 |
| 5727717 | Magnetically coupled joints for mannequins and forms There is disclosed a mannequin or form for displaying clothes accessories or other articles, comprising at least two parts which are separable at a respective joint to allow the mannequin or form to be dressed, the or each joint comprising a joint-surface... | 03/17/1998 |
| 5578889 | Piezoelectric generation of electrical power from surface waves on bodies of water using suspended weighted members A system for converting the mechanical energy of ocean waves to electrical energy comprises a weighted member supported from a piezoelectric element for applying a preselected strain to the element. In one embodiment, the element is supported by a float f... | 11/26/1996 |
| 5552657 | Generation of electrical energy by weighted, resilient piezoelectric elements Disposed within a float on the surface of a body of water is a vertically suspended, resilient piezoelectric element provided with a preselected strain by a hanging weight. The piezoelectric system functions as a weighted coiled spring which is driven int... | 09/03/1996 |
| 5548177 | Piezoelectric generator protection A known type of piezoelectric power generating system for converting the mechanical energy of waves on a body of water comprises a float and a piezoelectric power generating element suspended, under tension, between the float and a bottom anchor. For prev... | 08/20/1996 |
| 5512795 | Piezoelectric electric energy generator An electrical energy generator comprises a cylindrical stator, a cylindrical liner of a piezoelectric material in concentric contact with the stator, and an armature rotatable about the liner. In one embodiment, as the armature rotates, the armature squee... | 04/30/1996 |
| 5430954 | Measuring calliper There is disclosed a calliper, useful for measuring how much fat can be pinched beneath the skin, having jaws (4,6) pivotally mounted for relative pivotal movement. The movement is amplified by a gear train (24, 26, 28, and 30). The final gear wheel (30) ... | 07/11/1995 |
| 5299043 | Underwater liquid crystal display apparatus having identical polarizers and reflector in both the matting and liquid crystal cell A display apparatus for underwater use comprises a hermetically sealed enclosed including a liquid crystal display device. The device comprises a liquid crystal cell disposed between layers of light polarizers and a light reflector. The combination of cel... | 03/29/1994 |
| 5234529 | Plasma generating apparatus employing capacitive shielding and process for using such apparatus A plasma generating apparatus includes a plasma containing region and an R.F. coil for generating R.F. electric fields within the plasma region for creating a plasma from a gas flowed through the region. A capacitive shield is disposed between the coil an... | 08/10/1993 |
| 5143069 | Diagnostic method of monitoring skeletal defect by in vivo acoustic measurement of mechanical strength using correlation and spectral analysis A diagnostic method for determining in vivo mechanical strength and structural integrity of hard tissues such as bones, in a non-invasive and non-dramatic manner. The method separates ultrasound energy affected by surrounding soft tissues, and thus permit... | 09/01/1992 |
| 4867018 | Phillips screwdriver with retractable slotted screwdriver blade A screwdriver for alternative use with Phillip head screws and slotted head screws is disclosed comprising a handle and a shank extending therefrom, the leading end of the shank terminating in a Phillips head screw engaging bit. The leading end portion of... | 09/19/1989 |
| 4748366 | Novel uses of piezoelectric materials for creating optical effects An optical effect is produced in cooperation with the normal use of an article of manufacture, e.g., a toy such as a frisbee or a ball, or an article of clothing, such as a shoe, by mounting on the article a piezoelectric element for generating electrical... | 05/31/1988 |
| 4685296 | Ocean wave energy conversion using piezoelectric material members A float on a body of water is mechanically coupled to a piezoelectric material member for causing alternate straining and destraining of the member in response to the up and down movement of the float in response to passing waves, thereby causing the memb... | 08/11/1987 |
