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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 |
| 7967580 | Oil pump for an internal combustion engine An oil pump for an internal combustion engine for drawing up the lubricating oil situated in an oil collector device has an oil pump housing wherein at least two pairs of gears are disposed. The pairs of gears, in order to form the pumping stages, are connected on t... | 06/28/2011 |
| 7544052 | Oil pump for an internal combustion engine An oil pump for an internal combustion engine for drawing up the lubricating oil situated in an oil collector device has an oil pump housing wherein at least two pairs of gears are disposed. The pairs of gears, in order to form the pumping stages, are connected on t... | 06/09/2009 |
| 7361002 | Oil pump An oil pump to be insatalled to an engine of an automotive vehicle. The oil pump includes a section defining a suction port and a section defining a discharge port. A main unit of the oil pump has a section defining a plurality of pump chambers. Volume of each pump ... | 04/22/2008 |
| 7195467 | Internal gear machine with variable capacity A fluidic machine has a fixed body, an external orbital member rotatable around a first rotational axis and internal gear teeth including a first teeth number, a transmission member rotatable around a second rotational axis, an internal orbital member supported by t... | 03/27/2007 |
| 7188472 | Method and hydromachine for controlling a displacement The invention concerns a method and a hydromachine with a commutation device and with expanding and contracting pressure chambers passed by fluid and formed by displacement arrangements. With the method and the hydromachine, it is endeavoured to control a displaceme... | 03/13/2007 |
| 7182170 | Gerotor and bearing system for whirling mass orbital vibrator A gerotor and bearing apparatus for a whirling mass orbital vibrator which generates vibration in a borehole. The apparatus includes a gerotor with an inner gear rotated by a shaft having one less lobe than an outer gear. A whirling mass is attached to the shaft. At... | 02/27/2007 |
| 7179070 | Variable capacity pump/motor A variable capacity pump/motor has a meshing internal and external gear set disposed between an upper mandrel and a lower mandrel, each including a flange extending towards the gears to divide a pump/motor chamber into suction and discharge chambers. The outer gear ... | 02/20/2007 |
| 7137798 | Gear pump with variable throughput volume In a gear pump with variable throughput volume, with two meshed gears with external toothing which are rotatably held in the working chamber of a pump housing, at least one of the two gears is driven from a drive shaft and one of the gears, preferably the driven gea... | 11/21/2006 |
| 6672850 | Torque control oil pump with low parasitic loss and rapid pressure transient response A torque control crescent oil pump, having low parasitic loss and rapid pressure transient response, and a method for controlling oil flow within the pump, are provided. In one embodiment, the crescent oil pump comprises a housing, toothed annular gears c... | 01/06/2004 |
| 6612822 | Hydraulic motor system An improved hydraulic motor system, suitable for driving an automotive cooling fan or the like. The system is driven by grade gerotor set and an idle gerotor set which are stacked between a center plate and against a rear wall of a cylindrical cavity in a... | 09/02/2003 |
| 6283735 | Variable-delivery external gear pump A variable-delivery external gear pump comprising a casing, at least one rotatively driven pair of gears comprising two intermeshing spur gears, which form with shell surface areas of the casing and axial sealing surface areas a delivery space comprising a low... | 09/04/2001 |
| 6244839 | Pressure compensated variable displacement internal gear pumps The pump has a fixed gear axis eccentricity and varies displacement by moving controlling elements linearly along the drive shaft. A pressure compensator may be employed to displace the controlling elements. The pump includes a housing penetrated by a dri... | 06/12/2001 |
| 6003324 | Multi-rotor helical screw compressor with unloading A compressor with rotor unloading is presented. The compressor having a housing for supporting a multi-rotor configuration (e.g., a male rotor and two axially aligned female rotors) and a drive motor. A discharge disk is mounted at the discharge end of th... | 12/21/1999 |
| 5724812 | Variable displacement apparatus and method of using same A variable displacement apparatus includes a pair of axially adjustable housing parts sealingly joined together to form a unitary pumping chamber. A pair of meshing elongated vanes or gears having a plurality of teeth disposed within the chamber in a mesh... | 03/10/1998 |
| 5620315 | Gear pump for feeding of fluids Gear pump or motor to deliver fluid medium or use fluid medium as power source, respectively. The pump or motor has at least two gears contained within a housing. At least one gear is in a fixed position while the other gear is in slidable engagement with... | 04/15/1997 |
| 5569110 | Integrated hydro-mechanical automobile transmission This invention describes an integrated hydro-mechanical transmission having continuous, through zero, variability from maximum forward to maximum reverse and is intended for use in passenger cars and lighter-duty trucks. The integrated hydro-mechanical tr... | 10/29/1996 |
| 5306127 | Fluid pump with axially adjustable gears A fluid pump is arranged to employ cooperating gears that are arranged for axial displacement relative to one another, whereupon a volumetric chamber positioned between a surrounding housing and one of a plurality of inter-nesting first and second cylindr... | 04/26/1994 |
| 5203747 | Integrated hydro-mechanical transmission An integrated hydromechanical transmission capable of achieving continuous variability from maximum forward, through zero, to full reverse, and vice versa. The unit will achieve significantly higher rates of efficiency than current hydrostatic transmissio... | 04/20/1993 |
| 5184947 | Fully variable output hydraulic gear pump having an axially translatable gear A fully variable output hydraulic pump includes a main casing having a fluid pumping chamber extending therethrough, fluid input ports and fluid output ports. The fluid pumping chamber is shaped to receive a pair of cylindrically shaped gears inserted axi... | 02/09/1993 |
| 5161961 | Gear pump with counterbalanced radial forces and two piece radial seals By using multiple external gears and internal gears, which are engaged with each other, and multiple radial sealing elements and axial sealing elements, a pump or motor, which includes multiple equivalent pumps or motors, is made. Each gear included in th... | 11/10/1992 |
| 4932504 | Hydraulic pumps or motors and hydrostatic transmitting systems An axial variable capacity rotary pump which yields a stepless change of capacity. The pump has a casing with an inlet and outlet, at least one rotary member with engaging elements mounted on the periphery of the rotary member for engaging a mating member... | 06/12/1990 |
| 4872536 | Hydraulic pumps or motors and hydrostatic transmitting systems An axial variable capacity rotary pump which yields a stepless change of capacity. The pump has a casing with an inlet and outlet, at least one rotary member with engaging elements mounted on the periphery of the rotary member for engaging a mating member... | 10/10/1989 |
| 4812111 | Variable displacement rotary fluid machine An internally meshing gear-pump, or motor comprises inlet and outlet ports 27,28 for the working fluid through a sealing plate 5 mounted on the shaft 1, an externally-toothed gear 2 is longitudinally displaceable relative to internally-toothed gears 3,4 t... | 03/14/1989 |
| 4740142 | Variable capacity gear pump with pressure balance for transverse forces A gear pump in which one rotating, toothed pump gear is supported axially displaceable in the pump casing and engaging an axially displaceable sliding part at least on the one face wall of the pump gear. The sliding part is adapted to overlap the operatin... | 04/26/1988 |
| 4674615 | Hydraulic clutch #III A hydraulic clutch device which uses a gear pump design as its main element which, in effect, has nowhere to pump. Its center gear is driven by the input shaft while its housing unit can also rotate and comprises the output shaft. The center gear meshes with t... | 06/23/1987 |
| 4119392 | Screw compressor with axially displaceable motor The invention deals with a screw compressor with housing, such housing containing a working chamber with two parallel cylindrical intersecting bore holes. The working chamber is bordered by two even end walls vertical with the longitudinal axes of the bor... | 10/10/1978 |
