Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7311115 | Collection valve for water reclamation system A collection valve for use in a water reclamation system includes a drain pipe and a collection port assembly. The drain pipe includes an inlet port connectable to a drain line from which gray water is supplied, a collection inlet, and an outlet port. The collection... | 12/25/2007 |
| 6997200 | Water conservation system The invention recirculates and/or recycles fluids normally lost down the drain during the time it takes for a desired temperature to be attained for usage of the hot fluids. A recirculating/recycling valve, through which hot fluids may flow, has an additional port f... | 02/14/2006 |
| 6962162 | Method for operating a multi family/commercial plumbing system A method for operating a multi-family/commercial plumbing system includes sensing an event and recording for each sensed event at least one parameter selected from the group consisting of date, day of the week, start time, duration of the event, water flow, water te... | 11/08/2005 |
| 6755204 | Multi-way valve employing two-state operator A land (56) on an index member (32) disposed in the interior chamber of a manifold (38) is aligned with an actuating member (34) and thereby holds open a check valve (36) through which fluid flows into the manifold's interior chamb... | 06/29/2004 |
| 6622745 | Fluid waster diversion system A waste diversion system for diverting the effluent from a manufacturing process, such as polishing the surfaces of silicon wafers, has an electrically controlled diverter valve for receiving the effluent and diverting it either to a "dirty" output for wa... | 09/23/2003 |
| 6554027 | Electromagnetically controlled seat valve An electromagnetically controlled pressure regulating valve includes a hollow housing bounding a user channel having one end to be connected to a hydraulic medium user and another end, and respective supply and a discharge channels communicating with the ... | 04/29/2003 |
| 6367506 | Switch valve for hot gas circuit of refrigerant circuit A switch valve is provided in a refrigerant circuit. The switch valve includes a first valve mechanism, a second valve mechanism, and a single valve housing incorporating the first and second valve mechanisms. The first valve mechanism is an electromagnet... | 04/09/2002 |
| 6158208 | Multiplexed fluid control system with pressure transducer feedback A multiplexed hydraulic control system includes a pressure transducer fluidically connected to the multiplexer for sequential or periodic connection to a plurality of channels. The multiplexed hydraulic control system provides hydraulic control flows to a... | 12/12/2000 |
| 5836347 | Fluid pressure supply system A vehicle fluid pressure supply system in which a fluid pressure supply pump (10) is connected via solenoid-operated flow control valve (15) with a plurality of separate fluid pressure operated circuits(A, B, C) each operating separate functions of the ve... | 11/17/1998 |
| 5538160 | Postmix beverage dispenser with water boost A water boost for a postmix beverage dispensing system in which the water pump for the carbonator is used to also pump water into the water boost tank by the use of a three-way solenoid valve and a control circuit.... | 07/23/1996 |
| 4870986 | Dispensing system A system is disclosed for dispensing a liquid at a desired temperature from a hot liquid pressure line and a cold liquid pressure line to a plurality of liquid outlets such as a bathtub, a sink or the like. The system controls the temperature of the liqui... | 10/03/1989 |
| 4690166 | Pressure dependent dust control filter compressed air reversed flushing control system Disclosed are a compressed air reversed flushing system and sequencing valve. The flushing system includes a compressed air reservoir that is supplied with compressed air by an air compressor. The system includes a plurality of flushing valves connected t... | 09/01/1987 |
| 4546787 | Hydraulic valve control device A motor-operable fluid valve for a pump includes a valve body defining an open central portion, at least one high pressure inlet port in fluid communication with the open central portion, a plurality of lower pressure inlet and/or outlet ports in fluid co... | 10/15/1985 |
| 4173984 | Pneumatic amplifier A fluid amplifier comprising a housing having a cavity therein and a diaphragm in the housing dividing the cavity into first and second chambers. First and second supply passages lead to the first and second chambers, respectively, and terminate in first ... | 11/13/1979 |
| 3996956 | Electro-fluid interface device An electro-fluid interface device utilizes a control member that oscillates within a generally cylindrical chamber between an opposed pair of nozzles located at the ends of the chamber. Each nozzle is in fluid communication with a fluid supply, a fluid ou... | 12/14/1976 |
