Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7357142 | Apparatus for continuously aspirating a fluid from a fluid source An apparatus for continuously aspirating a fluid from a fluid source. A vacuum source is operatively connected to a first container forming a first chamber and a second container forming a second chamber. A fluid collection tube provides communication between the fl... | 04/15/2008 |
| 7325967 | Method and apparatus for administering micro-ingredient feed additives to animal feed rations A method and apparatus are provided for administering micro-ingredient feed additives to animal feed rations. The apparatus may be referred to as a system which includes a number of discrete components which cooperate together to ultimately deliver micro-ingredients... | 02/05/2008 |
| 7300575 | Portable filter system A filter system for receiving an aqueous-based fluid contaminated with particles and emulsified contaminant oil, removing the particles, and separating the emulsified contaminant oil from the aqueous-based fluid includes a filter media for receiving the aqueous-base... | 11/27/2007 |
| 7240807 | Method and apparatus for administering micro-ingredient feed additives to animal feed rations A method and apparatus are provided for administering micro-ingredient feed additives to animal feed rations. The apparatus may be referred to as a system which includes a number of discrete components which cooperate together to ultimately deliver micro-ingredients... | 07/10/2007 |
| 7228992 | Fluid dispenser cartridge A single-use fluid dispenser cartridge, installable or installed into a host fluid dispensing apparatus, is described. The single-use fluid dispenser cartridge is provided with a fluid reservoir, a fill tube assembly, and means for controlling pressure within the ca... | 06/12/2007 |
| 7124766 | Apparatus and use thereof in cleaning a respiratory device A cleaning apparatus includes a tank housing and a partition disposed in the tank housing so as to divide the interior thereof into pumping and cleaning chambers as the only chambers within the tank housing adapted to contain cleaning liquid. A submersible pump moun... | 10/24/2006 |
| 7056360 | Optical odorization system A system is shown for injecting a chemical, such as an odorant, from a chemical supply into a fluid containing system such as a natural gas pipeline. A tank of odorant is maintained under a positive pressure which exceeds that of the pipeline. An injection conduit c... | 06/06/2006 |
| 6491812 | Ice water cooling system An ice water cooling system for a multi-story building includes an open chemical tank 304 adjacent the bottom of the building 300. The tank includes a float-level ball 310 positioned therein for controlling the flow volume of water from the pipeline circu... | 12/10/2002 |
| 6269831 | Precision volumetric measuring and mixing apparatus An apparatus for mixing a first liquid with at least a second liquid includes a tank having a mixing chamber to which is connected a first and a second supply line from each of a first and a second source of liquid. A gross control valve disposed in each ... | 08/07/2001 |
| 6101452 | Method and apparatus for dispensing fluids A method and apparatus for dispensing fluids in response to a user request for a specified amount of the fluid. A microprocessor opens and closes a fluid port for predetermined amounts of time to control the amount of fluid dispensed. The microprocessor m... | 08/08/2000 |
| 6050282 | Batch mixing control method and apparatus A batch system wherein a constant, metered flow, is established for each of the ingredients of the batch. Having a constant flow rate and constant pressure in the fluid flow, a diverter valve diverts the flow for a predetermined length of time to yield a ... | 04/18/2000 |
| 5979478 | Apparatus and method for treating water in a water supply system Apparatus for delivering a water treatment chemical to a water intake in a water system is disclosed. The water system has a water inlet and a pump for withdrawing water from a natural body of water, such as an underground aquifer, a river, a lake or the ... | 11/09/1999 |
| 5792343 | Brine supply system A brine supply system including a first brine tank to store diluted brine of a predetermined concentration to be supplied into an electrolytic brine treatment device and a second brine tank to store an amount of saturated brine at a predetermined concentr... | 08/11/1998 |
| 5718006 | Fluid dispenser An apparatus is provided for dispensing fluid into a cistern such as a cistern on a water-closet, toilet or urinal. The apparatus comprises a receptacle (1) to be mounted in position within the cistern (not shown). A pivoted scoop (5) is mounted to move p... | 02/17/1998 |
| 5701924 | Apparatus and method for detecting and handling liquid separation in liquid emulsions An apparatus and method for detecting and handling liquid separation in a liquid emulsion disposed in a tank 1 by preventing separated liquid from entering a withdrawal conduit 3 disposed in the lower portion of the tank 1 by a apparatus comprising a pump... | 12/30/1997 |
| 5406970 | Chemical injection system A system for injecting chemicals, e.g., odorants, from a chemical supply into a gas pipeline includes three primary components, a pump for injecting the odorant, a metering device, and a programmable controller. The controller is preferably powered by a s... | 04/18/1995 |
| 5339854 | Conservation system and method An apparatus for conserving utilities including coolant, in a system having an evaporative cooler equipped with a water reservoir for holding a predetermined amount of cooling water and also equipped with a recirculating system for recirculating the cooli... | 08/23/1994 |
| 5339889 | Controlled biocide feeder for cooling water systems In accordance with the present invention, a controlled biocide feeder limits growth of bacteria (e.g., Legionella pneumophila) in heat transfer water of building air conditioning systems. Preferably, a flow of heat transfer water is directed across a soli... | 08/23/1994 |
| 5331994 | Fuel additive dispensing system An additive dispensing system for diesel fueled applications includes a diesel fuel system having either single or multiple tanks, a fuel level sensor, an additive tank, a fixed rate additive dispensing pump and a microprocessor operating on a logic basis... | 07/26/1994 |
| 5213694 | Water treatment control system for treating cooling tower makeup water An apparatus and method for controlling the amount and concentration of make-up water and chemicals introduce into the recirculating water of a cooling tower system. A float operated make-up valve controls the addition of make-up water to the tower. As ma... | 05/25/1993 |
| 5203367 | Apparatus for supplying liquid under constant pressure An apparatus for supplying a liquid under a constant pressure comprising a supply tank disposed at a higher lever than articles, i.e., containers, to be supplied with the liquid, an overflow plate partitioning the interior of the supply tank into a main t... | 04/20/1993 |
| 5127542 | Process and apparatus for proportioning liquids A proportioning process and apparatus is provided for forming a liquid composition by admixture of a plurality of liquid components. The apparatus includes a main chamber, a subchamber positioned within the main chamber and conduits for introducing the li... | 07/07/1992 |
| 5061450 | Isolation fluid control device and water cup An isolation fluid control device and water cup for use in an automated, random-access, isolation fluid-based, analytical instrument. The cup, in operation, contains two immiscible liquids. The cup is provided with inlets and outlets, and additionally com... | 10/29/1991 |
| 4823987 | Liquid mixing system and method A liquid mixing system and method are disclosed for automatically preparing a batch mixture containing predetermined quantities of liquids such as spray dampening solutions or silicone emulsions used in the printing industry. The system comprises a holdin... | 04/25/1989 |
| 4505288 | Pneumatically controlled dump valve system for gas scrubbers A rising liquid level in a gas scrubber for an air compressor is sensed by a float in the scrubber which opens a normally closed pneumatic vent valve whereby a very small pneumatic signal is delivered through a pneumatic spool valve to the chamber of a la... | 03/19/1985 |
| 4474476 | Chemical printing liquid method and system An improved method and system for properly supplying and mixing printing chemicals and liquid diluent and for supplying the resulting liquid is provided. The method and system feature the use of periodic or continuous monitoring of the ph and/or electrica... | 10/02/1984 |
| 4436674 | Vapor mass flow control system In a system for delivering vapor from a container partially filled with liquid to be vaporized by bubbling a carrier gas therethrough, the flow of the vapor is precisely regulated by a controller so as to provide a uniform mass flow rate of vapor. The con... | 03/13/1984 |
| 4407353 | Waste heat recovery device for preventing corrosion by sulfur oxides In a boiler or an industrial furnace, a temperature detecting sensor is mounted at the heat absorbing side of a heat pipe of a waste heat recovery device which is disposed in part of the path of exhaust gas. With an output signal of the temperature detect... | 10/04/1983 |
| 4393013 | Vapor mass flow control system A system for precisely controlling the mass flow rate of vapor from a bubbler by a carrier gas stream.... | 07/12/1983 |
| 4320775 | Liquid metering unit responsive to the weight of the metered liquid A process and apparatus are disclosed for the accurate measurement and control of liquid flow at low flow rates. The invention is particularly applicable to the measurement and control of continuous liquid blending operations, e.g. gasoline blending, in w... | 03/23/1982 |
| 4312595 | Automatic fluid mixing system and a multi compartmented container therefore An automatic fluid mixing system is disclosed which, in its preferred embodiment, discontinuously opens a disposable multi-compartmented module to permit the mixing of initially released contents before the subsequent opening of remaining compartments, fl... | 01/26/1982 |
| 4180083 | System for controlling flow rate in pipelines System for controlling flow rate in pipelines connecting a plurality of reservoirs is disclosed. Flow rate Qij (t) of fluid flowing from one reservoir (i) to another reservoir (j) is first calculated from the water levels Hi (t), H | 12/25/1979 |
| 4039637 | Fuel supply systems for heat generators A fuel supply system for a heat generator comprises means for spraying fuel into an air inlet tube, which means are branched off a fuel supply line supplied by a pump having a fuel delivery greater than the fuel comsumption rate of the generator. The fuel... | 08/02/1977 |
| 4033295 | Arrangement for reducing vacuum in milking machines A connection between a vacuum source and a conduit of a milking machine is controlled by a valve body having a position for providing a normal working vacuum in the conduit and a position for providing a reduced working vacuum in the conduit. The valve bo... | 07/05/1977 |
| 3970099 | Liquid level responsive vent valve An automatic vent valve for pneumatic control systems of compressors or the like allows a compressor to be shut down when the level of liquid in an associated gas scrubber reaches a certain level. The device is also applicable to pressure vessels, boilers... | 07/20/1976 |
