Bizarre Patents
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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7334597 | Liquid/vapor bypass valve Bypass valve assembly that selectively establishes a bypass path for a fluid delivery system and having a body member with a fluid inlet and a bypass fluid outlet, a slidable piston assembly and a slidable cage assembly. Spring members bias the piston assembly and t... | 02/26/2008 |
| 5718255 | Flow-responsive diverting valve A flow-responsive diverting valve is particularly useful with pressure washers of the type having a water pump coupled to an internal combustion engine equipped with a pull-rope starter. The valve provides an "easy-start" feature and has a valving chamber... | 02/17/1998 |
| 5263508 | Sewer line water trap charging valve with improved adjustment for house line pressure changes A device for charging sever line traps automatically upon decrease in main line water pressure comprising a branch line having a piston valve member telescopically received over the end of an adjustable tubular member, the piston having a first seat for s... | 11/23/1993 |
| 5215444 | System for controlling oil viscosity and cleanliness A system for and a method of establishing and maintaining fluid at desired cleanliness, viscosity and temperature levels in a flow system. The system includes a driven pump that circulates fluid from a fluid source through a hydraulic loading system that ... | 06/01/1993 |
| 5058618 | Relief valve for hydraulic fluid The relief valve issued for controlling the pressure of a hydraulic fluid within a first duct 30 opening into a bore 14,16 provided in a body 10, a communication between the first duct 30 and a second duct 34 connecting a primary hydraulic circuit under p... | 10/22/1991 |
| 4543977 | Valves A balance valve for maintaining two fluid pressure systems at a predetermined pressure relative to one another. The valve comprises a piston slidably received within a bore and subjected on opposite ends to the pressure in the two systems. Each of the two... | 10/01/1985 |
| 4446882 | Solenoid-operated valve means for hydraulic systems In an hydraulic system a solenoid-operated valve mechanism is used to control delivery of pressure fluid to a part of the system, the fluid being circulated by a pump from a reservoir through the valve mechanism and back. The valve mechanism has a solenoi... | 05/08/1984 |
| 4445527 | Valve extension A tire valve extension (10) which includes a relief valve element (24) to limit the inflation pressure of the tire. The extension has a tubular body with an annular recess (36) formed therein to define an outer tube section (14) and an inner tube section ... | 05/01/1984 |
| 4441629 | Compressed gas powered caulking gun Pressure reducing and safety discharge valve device adapted for use with compressed gas-containing capsules. The valve has a bore therein in which a spool-shaped valve element is disposed for axial reciprocation. In a first terminal position of the valve ... | 04/10/1984 |
| 4332134 | Hydrostatic transmission bleed-off valve A valve to provide a controlled loss of hydraulic fluid from a closed loop hydrostatic transmission. A method of converting a bleed-off valve from one sensitive only to loop pressure to one sensitive to both loop pressure and charging line pressure. A pre... | 06/01/1982 |
| 4282757 | Device for detecting rate of change in pressure Apparatus for detecting a rate of pressure rise in a pipeline higher than an acceptable level, comprising a monitor conduit which is connected between the pipeline and a monitor chamber of uniform cross-section with a spring-biased piston or diaphragm the... | 08/11/1981 |
| 4273151 | In-line relief valve A safety relief valve especially suitable for connection in a pressure gas system for beverage dispensing equipment has a body that defines a vented cylindrical valve cage and a coaxial annular valve seat at one end of the cage with an annular seating sur... | 06/16/1981 |
| 4006805 | Clutches with bypass inching valve A transmission control apparatus for a vehicle having a transmission with fluid actuated clutch means and hydraulic brake means wherein a first fluid conduit, having a fluid flow constricting means interposed therein, connects a fluid pressure source with... | 02/08/1977 |
