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| Number | Title | Issue Date |
| 6609534 | Multi-additive injection system for aviation fuel A multi-additive injection system for injecting required amounts of different additives to flowing fuel in a fuel line (6) comprises a number of additive injection sub-systems (1, 2, 3 and 4). Each sub-system includes a source of additive (7), a pump (13)... | 08/26/2003 |
| 6216091 | Ultrasonic measurement system with molecular weight determination An ultrasonic measurement system performs a signal path measurement by directing ultrasonic signals through a gaseous material in a conduit, and processing the detected signals to determine sound speed and to derive the average molecular weight of an unkn... | 04/10/2001 |
| 5490766 | Precision small displacement fluid pump A fluid pump for displacing a small, precise volume of fluid for each pump stroke, particularly where the fluid to be displaced is a liquid containing dissolved gas. The precise volume of fluid to be displaced is adjustable to any selected amount up to th... | 02/13/1996 |
| 5349852 | Pump controller using acoustic spectral analysis A system for controlling the flow of fluid through a line (3). The system may include first and second valves (A, B; and 6, 7) in the line (3). Between the first and second valves is located a chamber (52, 82), part of which may be filled with fluid havin... | 09/27/1994 |
| 4732191 | Thermal pumping system for liquid products The present invention pertains to a thermal pumping system based upon the action of a temperature-sensitive evaporating-condensing expansion liquid for dosing liquid products from a supply container into a washing machine comprising a discharge line havin... | 03/22/1988 |
| 4541450 | Liquid proportioning system There is provided a proportioning system for mixture of the fluid to a liquid-carrying main line in a substantially constant, presettable proportion to the flow rate of the liquid in the main line. The system comprises pump means for drawing a quantity of... | 09/17/1985 |
| 4440314 | Method and apparatus for the automatic dynamic dosing at least of one fluid component of a mixed fluid In order to increase the dosing precision it is proposed to control the flow of the main component and thereby the measured flow of the main component is used as a variable desired value, and with the control of the flow of the secondary component the con... | 04/03/1984 |
| 4369805 | Liquid metering injector assembly A liquid metering injector assembly for injecting metered quantities of a first liquid into respective metered quantities of a second liquid comprising a metering cylinder, metering ports formed at either end of the metering cylinder; a metering piston di... | 01/25/1983 |
| 4330003 | Self-proportional fluid metering device actuated by a pressurized fluid Fluid is metered into a conduit by a device which includes a detector for detecting the flow rate in the conduit, an amplifier for producing a pneumatic pressure which is dependent on the flow rate sensed by the detector, a control unit having a control s... | 05/18/1982 |
| 4252142 | Apparatus for discontinuously diluting a liquid in another liquid, to a given level of concentration Apparatus for discontinuously diluting a liquid in another liquid, to a predetermined level of concentration, comprising a metering container provided with a means for automatically limiting the filling thereof to a predetermined level, a tank for liquid ... | 02/24/1981 |
| 4012176 | Fluid-driven motor and fertilizer feeding device utilizing same A fluid-driven motor comprises a collapsible tube connectable at one end to a source of pressurized fluid, and a pinch-roller engaging the outer surface of the tube and collapsing same at the point of engagement, whereby the pressure within the tube drive... | 03/15/1977 |
| 4007755 | Component injection system A system for injecting a predetermined amount of additive fluid into a main stream of fluid which controls the amount of additive injected by a timing circuit. A pump continuously circulates the additive through a circuitous path having a valve which dive... | 02/15/1977 |
