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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 |
| 6941900 | VAL rotary engine A rotary engine has a spherical enclosure serving as a combustion chamber, a first baffle inside the combustion chamber slideable along a groove formed in the spherical enclosure, and a second baffle disposed in the combustion chamber which is in sealing engagement ... | 09/13/2005 |
| 6506512 | Compression regenerative machine for fuel cell A compression regenerative machine for a fuel cell according to the present invention comprises a displacement type compression mechanism portion C connected to an oxygen-containing gas supply side of a fuel cell F, and a displacement type regenerative me... | 01/14/2003 |
| 5988998 | Rotary pump having a reinforced flexible annular diaphragm A rotary diaphragm fluid pump includes a rigid tubular body with internal annular groove, a tubular flexible diaphragm whose central portion is caused to orbit by an eccentrically driven bearing. Preferably the diaphragm is a moulding which features an el... | 11/23/1999 |
| 5769617 | Vane-type compressor exhibiting efficiency improvements and low fabrication cost A rotary sliding-vane compressor is described which contains a single rotor with compressor and expander sections, together with a reduced number of parts and efficiency improvements compared to conventional compressors.... | 06/23/1998 |
| 4659297 | Variable capacity vane motor having rotatable and stationary cam rings A vane motor is disclosed in which the volumetric displacement, torque, or speed are continuously adjustable. The vane motor includes a housing having a rotor and cam ring disposed axially around the rotor. The rotor includes vanes in radial slots which d... | 04/21/1987 |
| 4386894 | Hybrid high pressure hydraulic turbine A rotary power plant that uses high-pressure, low volume hydraulic fluid has a housing journalling a rotor formed by a main shaft portion in the circumference of which one or more grooves are formed partially therearound; if more than one they are phased ... | 06/07/1983 |
| 4274814 | Rotative machine for fluids Rotative machine for fluids comprising a disc or stator with spiral-like ribs limiting channels between an inlet and an outlet for fluids and, mounted for rotation in relation to the said disc, a rotor cooperating slidingly with the said disc so as to def... | 06/23/1981 |
| 4021165 | Rotative machine for fluids with spiral-like passages and vane wheels A rotative machine for fluids comprising a plate with spiral-like passages (stator), facing a disc (rotor) mounted for rotation relative to the stator on a common axis and carrying, on its face in front of the passages, vane wheels mounted for rotation on... | 05/03/1977 |
| 3981637 | Variable displacement rotary machine with oscillating piston slides A rotary piston engine comprising a stator and a rotor including piston slides in the rotor, and working chambers between the rotor and the stator wherein movable parts are provided in the stator for adjusting the volume of the working chambers.... | 09/21/1976 |
