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| Number | Title | Issue Date |
| 7175715 | Method and device for determining the deposits of components from a liquid on surfaces, in particular liquid pumping machines The invention relates to a method and device for determining the deposits of components from a liquid on surfaces, in particular in liquid pumping machines, comprising at least one body upon the surface of which said deposits occur, which affect the properties of an... | 02/13/2007 |
| 7174228 | Field device with display A display for on-site visualization of conditions of an automated process is disclosed. It comprises a display controller which at least temporarily provides a state indication signal representing a constellation of states of at least two process data signals. At le... | 02/06/2007 |
| 7162896 | Apparatus for checking the formation of scale, and water-carrying appliance An apparatus allows monitoring the formation of scale. The apparatus makes it possible to determine the degree of water hardness or a tendency of the degree of water hardness to change over time and to take measures for adjusting the desired degree of water hardness... | 01/16/2007 |
| 6736153 | Brining system, method, and apparatus Method for making salt brine of a desired concentration wherein tap water and recycle dilute brine is passed from a sump tank located indoors into a mixing tank located outdoors. A dilute brine flow from the mixing tank is passed into the sump tank. The concentratio... | 05/18/2004 |
| 6439252 | Liquid de-icer production apparatus and method An apparatus and method for automatically producing a desired specific gravity of a salt solution used for deicing highways. Highway departments can produce a high volume of salt solution of a desired specific gravity by a machine that automatically feeds... | 08/27/2002 |
| 6129106 | Proportioning valve and control means therefor The proportioning valve apparatus includes a cylindrical valve body having a first inlet for receipt of a first fluid, a second inlet for receipt of a second fluid, a mixing chamber and an outlet for releasing a mixture of the two respective inputs. A rot... | 10/10/2000 |
| 5751599 | Probeless microprocessor based controller for open recirculating evaporative cooling systems An open recirculating evaporative cooling system includes a cooling tower or evaporative condenser (12) having a heated water inlet (20) and a water collection basin (22), a water supply (34) for supplying a volume of water to the cooling tower, a water s... | 05/12/1998 |
| 5567283 | Caustic concentration regulator for chlorine generators An electrolytic chlorine gas generating system is disclosed. The system includes an electrolytic cell generating the chlorine gas, a brine tank supplying saturated brine to the anode compartment of the cell, and an acid feed tank containing hydrochloric a... | 10/22/1996 |
| 5551468 | Fluidic density control for chlor alkali cells The density of a caustic solution is reduced by automatically adding water to the caustic solution when the specific gravity of the caustic solution is unacceptably high. The mechanism consists of a flow control valve that is controlled by an switch that ... | 09/03/1996 |
| 5481968 | Apparatus for continuous multiple stream density or ratio control A multiplicity of variable density fluid streams, each having been processed to yield individual fluid streams of desired densities, are combined in a manner to achieve controlled ratios of each stream as determined by a recipe structure to produce a fina... | 01/09/1996 |
| 5478395 | Process for supplying a gas, especially of diborane and silane A process for supplying a gas to a reactor comprising the steps of: (i) continuously measuring density of the gas, the gas including at least one component which is susceptible to formation of an undesired side product as shown by a variation in density of the... | 12/26/1995 |
| 5447744 | Process for supplying a gas, especially of diborane and silane A process for supplying a gas to a reactor comprising the steps of: (i) continuously measuring density of the gas, the gas including at least one component which is susceptible to formation of an undesired side product as shown by a variation in density of the... | 09/05/1995 |
| 5388604 | Method for adjusting the density of a liquid A density controlled product with controlled overrun amounts is formed a method and an apparatus whereby a fluid stream is measured with a mass flow meter in order to develop a predetermined liquid metering density control system for mixing a liquid havin... | 02/14/1995 |
| 5325852 | Method and apparatus for adjusting the density of a liquid A density controlled product with controlled overrun amounts is formed a method and an apparatus whereby a fluid stream is measured with a mass flow meter in order to develop a predetermined liquid metering density control system for mixing a liquid havin... | 07/05/1994 |
| 5201337 | Apparatus for mixing fluids of different specific gravity A specific gravity control apparatus 200 is disclosed which uses a plurality of electrodes 202, 204 and 206 to measure the height of a control liquid within a leg 8 to provide enhanced control of the specific gravity of the solution S. In a specific gravi... | 04/13/1993 |
| 5199453 | Method for control of hard water scale deposition in evaporative cooling systems Disclosed is a method and apparatus for preventing or minimizing scale deposition from hard water onto heat transfer surfaces in atmospheric cooling towers, such as those used in air conditioning and refrigeration systems, where evaporative cooling of wat... | 04/06/1993 |
| 5101851 | Apparatus for control of hard water scale deposition in cooling systems Disclosed is a method and apparatus for preventing or minimizing scale deposition from hard water onto heat transfer surfaces in atmospheric cooling towers, such as those used in air conditioning and refrigeration systems, where evaporative cooling of wat... | 04/07/1992 |
| 5013488 | Apparatus for control of hard water scale in evaporative coolers Disclosed is a method and apparatus for preventing or minimizing scale deposition from hard water onto heat transfer surfaces in atmospheric cooling towers, such as those used in air conditioning and refrigeration systems, where evaporative cooling of wat... | 05/07/1991 |
| 4982755 | Flux density control system A flux density control system controls the density of flux or other liquid by measuring the density and adding a thinner solvent or other liquid with a lower density than the flux. The apparatus includes a tank having an overflow adapted to maintain a set... | 01/08/1991 |
| 4977915 | Demulsifier control system and method The present invention controls the addition of a demulsifier through a petroleum stream by causing the petroleum stream to have a density gradient relating to its water content. The petroleum stream is sampled at two different locations along the density ... | 12/18/1990 |
| 4969480 | Method and apparatus for mixing and supplying fountain solution to printing press A fountain solution supply system for mixing and supplying a fountain solution, having two or more ingredients mixed in precise concentrations, from a reservoir to a printing press. The system includes a high-capacity pump connected to the reservoir. Subs... | 11/13/1990 |
| 4899774 | Fluidic density control for chlor alkali cells The density of a caustic liquid is reduced by automatically adding water to the caustic when the specific gravity of the caustic is unacceptably high. A small stream of water is continuously directed over the head of a specially designed hydrometer. As lo... | 02/13/1990 |
| 4726896 | Method and apparatus for on-stream analysis of slurried ore An on-stream method and apparatus for measuring the content of a mineral constituent in a flowing slurried ore on a dry weight basis, is provided. The slurry density and flow rate, and optionally temperature, are measured to calculate a period of time dur... | 02/23/1988 |
| 4724795 | Automatic solution concentration monitoring system An improved automatic immersion coating apparatus is disclosed herein which is particularly well suited for use in applying a coating to substantially all the exposed surfaces of a workpiece without incurring any potentially damaging or wearing of the sur... | 02/16/1988 |
| 4654802 | Cement metering system For use in preparing cement to cement a well, a cement metering system is set forth. The preferred and illustrated embodiment incorporates flow meters measuring water delivered to a cement jet mixer for cement and water into a slurry. A downstream density... | 03/31/1987 |
| 4601306 | Apparatus for ascertaining and/or keeping constant the mixing ratio of a liquid mixture In the case of an apparatus for ascertaining and keeping constant the concentration of alcohol in the plate dampening fluid used in an offset litho press, having a float vessel with an inlet and an overflow such that the float controls the supply of alcoh... | 07/22/1986 |
| 4565085 | Method of and apparatus for measuring the degree of gas charge in a liquid synthetic resin component A method of and apparatus for the measurement of the degree of charging of a liquid synthetic resin component with a gas in which the flushing of the measuring column and the detection of the hydrostatic pressure are effected solely by control of the inta... | 01/21/1986 |
| 4548226 | Apparatus for adjusting the concentration of oil in a water-containing oil material Method of adjusting a concentration of oil in a water-containing oil material which comprises determining a change in buoyancy exerted on a plummet suspended in the oil material and controlling the amount of water being supplied to the oil material accord... | 10/22/1985 |
| 4483357 | Method for two stage in-line acid mixing A method of preparing mixtures of dilute acid of varying final specific gravities utilizes microprocessor controlled mixing in two in-line stages. Process recycled or production reject acid or water is initially mixed with concentrated acid and directed t... | 11/20/1984 |
| 4474204 | Delivery and metering device control system A control system (10) is provided for maintaining a constant fluid level in a mixing container of a delivery and metering device. Structure (12) is provided for monitoring the fluid level in the mixing container and for generating a level signal (14) repr... | 10/02/1984 |
| 4445526 | System and method for controlling the specific gravity and viscosity of the slurry applied to television picture tube faceplates A system and method for continuously maintaining the specific gravity and viscosity of the slurry applied to a television picture tube includes a container for dispensing slurry to the faceplate of such a tube and for receiving excess slurry from the face... | 05/01/1984 |
| 4422085 | Ink liquid viscosity control in an ink liquid supply system for an ink jet system printer An ink liquid supply system for an ink jet system printer includes a sub tank for introducing a new ink liquid from an ink liquid cartridge and an old ink liquid from a beam gutter included in the ink jet system printer. A float element is disposed in the... | 12/20/1983 |
| 4398554 | Flux control device A flux control device for maintaining the specific gravity and the surface level of a liquid flux contained in a fluxing vessel within predetermined ranges, includes a first reservoir for storing a concentrated flux, a second reservoir for storing a dilue... | 08/16/1983 |
| 4362179 | Method and apparatus for controlling ink viscosity A system for controlling the viscosity of flexographic and gravure printing ink. The system includes a variable weight hydrometer which monitors the density of circulating printing ink. The hydrometer is in cooperative relationship with a supply of solven... | 12/07/1982 |
| 4327759 | Slurry producing apparatus Apparatus and method for producing a slurry. The apparatus includes a slurry reservoir, a closed circuit and a pump for circulating slurry from the reservoir through the closed circuit and back to the reservoir. Means are provided for introducing both par... | 05/04/1982 |
| 4252139 | Method and apparatus for automatically mixing a solution having a specified concentration A method and apparatus for automatically mixing a solution having a specified concentration is disclosed. The apparatus comprises: a storage tank, means for automatically introducing water into the tank, means for slowly introducing salt into the tank, an... | 02/24/1981 |
| 4206157 | Fluid metering device Metering device for metering a fluid into a liquid to obtain a treatment liquid having variable physical parameters depending on the concentration of the fluid to be metered into the treatment liquid. The device comprises a container having an inlet for t... | 06/03/1980 |
| 4131019 | Method and apparatus for measuring specific gravity of liquids in process streams A method and apparatus for measuring the specific gravity of liquids in process streams by intermittently sampling the process stream and measuring the specific gravity of the sampled liquid under static conditions in a constant level overflow device by t... | 12/26/1978 |
| 4130126 | Ink maintenance sensor Apparatus and method for detecting and correcting for evaporation from recirculated unused ink drops in an ink jet printer. The specific gravity of the recirculating ink is compared with that of a standard by measuring the time of fall of heavy floats thr... | 12/19/1978 |
| 4024885 | Process and apparatus for controlling the concentration of diazotype developing liquid A reserve supply of diazotype developing liquid from which liquid is supplied to semi-dry diazotype developing apparatus is maintained at both a substantially constant level and the required concentration of azo coupling component by introducing solvent f... | 05/24/1977 |
