Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7163379 | Gradient liquid feed pump system, and liquid chromatograph A gradient liquid feed pump system capable of liquid feed in a correct mixing ratio even in the case of liquid feed in which the mixing ratio varies. Specifically, it comprises a first plunger pump for sucking and delivering an eluate, a second the first and second ... | 01/16/2007 |
| 7155367 | Method for evaluating relative efficiency of equipment The current invention is a computer implemented method of evaluating relative efficiency of equipment by constructing a mathematical model of the operation of the equipment, calculating a distance between an actual operating point and the mathematically obtained opt... | 12/26/2006 |
| 7055546 | Fluid intake pressure regulating system A fluid intake pressure regulating system of this invention maintains the pressure of fluid entering a pump below a preselected level for avoiding undesirably high fluid discharge pressure exiting the pump. ... | 06/06/2006 |
| 6966967 | Variable speed pump control A method and apparatus for monitoring operating characteristics and/or control signals of a system comprising a variable speed vacuum pump. Operating characteristics and/or control signals of the system may be monitored, and the pumping speed of the variable speed v... | 11/22/2005 |
| 6939109 | Pump control system The present invention provides a system which comprises primary supply pumps and secondary supply pumps and controls pressurized water supply systems, air-conditioning systems, or the like that supply chilled water or hot water using these pumps. In the present inve... | 09/06/2005 |
| 6916397 | Methods and apparatus for maintaining a pressure within an environmentally controlled chamber In a first aspect, a system includes (1) a chamber; (2) a variable speed vacuum pump coupled to the chamber; and (3) a pressure controller coupled to the chamber. The pressure controller compares a set point pressure with a pressure measurement for the chamber and a... | 07/12/2005 |
| 5908462 | Method and apparatus for antisurge control of turbocompressors having surge limit lines with small slopes A turbocompressor's Surge Limit Line, displayed in coordinates of reduced flow rate (qr) and reduced head (hr), can be difficult to characterize if the slope of the line is small; that is, nearly horizontal. And it can be especially ... | 06/01/1999 |
| 5743715 | Method and apparatus for load balancing among multiple compressors Balancing the load between compressors is not trivial. An approach is disclosed to balance loads for compression systems which have the characteristic that the surge parameters, S, change in the same direction with rotational speed during the balancing pr... | 04/28/1998 |
| 5348076 | Cooling apparatus for electronic system A cooling apparatus for an electronic system, includes a coolant tank, main pumps, heat exchangers, a common supplementary pump, and supplementary check valves. The coolant tank temporarily stores a coolant. The main pumps are respectively arranged in a p... | 09/20/1994 |
| 5259731 | Multiple reciprocating pump system The present invention discloses a system for pumping a fluid into a common pressure outlet. The system contains a plurality of reciprocating pumps. A separate sensor coupled to one cylinder of each pump provides an electrical signal each time the piston i... | 11/09/1993 |
| 5218986 | Pneumatically pressurized water pumping apparatus Water pumping apparatus is described for use with wells in which on-off cycling in pump operation is minimized by providing an air compressor and compressed air holding tank feeding an pressure regulating valve connected to discharge into a water holding ... | 06/15/1993 |
| 5108263 | Method of optimizing the operation of two or more compressors in parallel or in series Method of optimizing the operation of two or more compressors in parallel or in series. Known methods of this type assume that the compressors are similar and attempt to optimize their operation by balancing the outputs of or the loads on the individual c... | 04/28/1992 |
| 5076767 | Liquid flow metering A system for metering the volume of a liquid, e.g. ink, supplied by a positive displacement pump to an installation, such as a printing press, employs a device for generating a first series of signals each indicative of completion of a pumping stroke. The... | 12/31/1991 |
| 4821761 | Closed loop pump control system A system for controlling the output flow rate of a second pump to proportionately track the output flow rate of a first pump in which the first pump produces an electrical signal at each successive stroke thereof. An electrical circuit produces an electri... | 04/18/1989 |
| 4699570 | Vacuum pump system A vacuum pump aggregate utilizes a microprocessor in conjunction with pressure and temperature sensors and motor control circuits to regulate the pressure by varying the speed of one or more vacuum pumps. Measured temperature and/or pressure values are co... | 10/13/1987 |
| 4552512 | Standby water-powered basement sump pump A water-powered positive displacement auxiliary sump pump has a drive water inlet connected to the municipal water supply via a float actuated pilot valve. The pump is designed to be constructed chiefly of molded plastic supported by an exit manifold conn... | 11/12/1985 |
| 4290735 | Water pressure booster system A plurality of relatively large, high capacity, high head, pumps disposed in parallel in the basement of a building provide water under pressure throughout the water pipes in a high rise building. Pressurestatic switch means controls the operation of thes... | 09/22/1981 |
| 4072168 | Dual standpipe arrangement supplementing a water supply system For use in connection with a water supply system wherein pumping means draws water from a source and supplies it to various consumers by way of a main and branch lines from a main, a supplement to said supply system including a tank forming a first large ... | 02/07/1978 |
