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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 |
| 7258347 | Discrete active seal assemblies Active seal assemblies employing active materials that can be controlled and remotely changed to alter the seal effectiveness, wherein the active seal assemblies actively change modulus properties such as stiffness, shape orientation, and the like. In this manner, i... | 08/21/2007 |
| 7185893 | Metallic flat seal and method for the production thereof The present invention concerns a metallic flat gasket with at least one sealing layer with at least one port, with a sensor layer corresponding to the ports being deposited on at least one surface of the sealing layer. This sensor layer consists of a compression pro... | 03/06/2007 |
| 6626436 | Monitoring seal system A monitoring seal system comprises a seal housing, a seal assembly, a temperature sensor and a controller. The seal assembly sealingly engages a rotary shaft to prevent fluid leakage between the shaft and the housing. The seal assembly has at least one se... | 09/30/2003 |
| 6325377 | Rotary shaft monitoring seal system A rotary shaft monitoring seal system includes a seal housing; a seal assembly in the housing for sealingly engaging a rotary shaft to prevent fluid leakage between the shaft and the housing; a monitoring port in the housing; and a detector assembly mount... | 12/04/2001 |
| 6082737 | Rotary shaft monitoring seal system A rotary shaft monitoring seal system includes a seal housing; a seal assembly in the housing for sealingly engaging a rotary shaft to prevent fluid leakage between the shaft and the housing; a monitoring port in the housing; and a detector assembly mount... | 07/04/2000 |
| 5979828 | Apparatus for eliminating gaps in an aircraft An apparatus (30) for eliminating gaps (20) in a door of an airplane has an elastaueric bladder (32) bonding along an edge (24) of a door gap (20). The elastomeric bladder (32) includes a port providing for access to an interior cavity (34). A pneumatic a... | 11/09/1999 |
| 5762342 | Mechanical seal with controller for regulating face contact pressure A mechanical seal assembly for creating a sealing relationship between a housing and a shaft which is rotatable relative thereto. The seal assembly includes first and second coaxially aligned and axially adjacent seal rings disposed in an encircling relat... | 06/09/1998 |
| 5516121 | Dry slip ring seal having independent cooling loops A dry slip ring seal for incorporation in apparatus comprising a fixed element, such as a casing, and a revolving element, such as a shaft. At least one of these elements incorporates an internal conditioning circuit enabling the circulation of conditioni... | 05/14/1996 |
| 5186277 | Generator sealing oil temperature control method and apparatus utilizing temperature matching A system for providing seal oils to a gland seal that surrounds the shaft of a generator with the temperature differences between the oils minimized, as well maintained at a temperature which is greater than that for a bearing lubrication oil supply syste... | 02/16/1993 |
| 5147015 | Seal oil temperature control method and apparatus A system for providing seal oils to a gland seal that surrounds the shaft of a generator with the temperature differences between the oils minimized. The temperature of one of the seal oils is utilized as a reference for controlling the oil temperature of... | 09/15/1992 |
| 5076589 | Mechanical seal An improved mechanical seal assembly for separating high pressure fluid from lower pressure fluid including a vented Quad-ring in a non-rotatable seal ring for providing lower sliding friction and improved, more consistent pressure deflection of the non-r... | 12/31/1991 |
| 4722534 | Face seal with automatic face convergence means A controllable mechanical seal for sealing a rotating body relative to a housing of a fluid device. The mechanical seal includes a pair of seal rings supported in juxtaposed relation in said housing. Each seal ring has a cylindrical outer surface and a ra... | 02/02/1988 |
| 4691276 | Adaptive control system for mechanical seal assembly An adaptive control system regulates operation of a mechanical seal assembly by reacting dynamically to changes in seal operating conditions to provide minimal wear with minimal fluid leakage. The disclosed "self-learning" method adapts automatically to a... | 09/01/1987 |
| 4643437 | Mechanical seal with automatic gap convergence control A controllable mechanical seal for sealing a shaft rotatable relative to the housing of a fluid machine includes first and second face elements having first and second radial surfaces. The first element is adapted for rotation with the shaft. The second e... | 02/17/1987 |
| 4447063 | Shaft seal with positively magnetically controlled sealing gap In a shaft seal having a radial plane seal ring gap and comprising a seal ring rotating with a shaft, and a non-rotating seal ring mounted on a housing of the seal through an element which is elastically yielding in every direction and serves as a packing... | 05/08/1984 |
| 4433198 | Device to measure temperature of an annular elastomeric seal A device for measuring in situ the temperature of an annular elastomeric seal is provided which comprises, in a preferred embodiment thereof, an annular elastomeric seal formed of two annular halves, a thermocouple embedded in said seal near the interface... | 02/21/1984 |
| 4121839 | Sealing system for use in composite multi-stage pump A sealing system for use in a composite multi-stage pump or pumps is disclosed which utilizes part of the liquid pressurized by the pump to moderate sealing conditions by introducing said liquid to a portion or portions around the shaft, where the sealing... | 10/24/1978 |
| 4041990 | Accumulator for use in a hydraulic system An accumulator for use in a brake booster having a housing with a piston located in a bore. The piston has a plug attached thereto. The piston moves in response to a predetermined thermal expansion of a fluid in the accumulator. A predetermined movement s... | 08/16/1977 |
