| Patents for G05D 11 - Ratio control (5,344) |
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| 06/07/1977 | US4027859 Automatic control of liquid addition to a mixture by power sensing |
| 05/31/1977 | US4026439 Precision fluid dispensing and mixing system |
| 05/24/1977 | US4024885 Process and apparatus for controlling the concentration of diazotype developing liquid |
| 05/17/1977 | US4023587 Method and apparatus for mixing two gases in a predetermined proportion |
| 05/10/1977 | US4022238 Pressure compensating device for mixing faucets |
| 05/10/1977 | US4022234 Method and apparatus for mixing two gases in a predetermined proportion |
| 04/26/1977 | US4019653 Automatic proportioning paint spray system |
| 04/26/1977 | US4019523 Method and apparatus for mixing gases |
| 04/19/1977 | US4018077 Apparatus for providing a controlled concentration of a substance in a flow of liquid |
| 04/12/1977 | US4017602 Process for preparing products for use in aerosol form |
| 04/05/1977 | US4015617 Analgesic apparatus |
| 02/22/1977 | US4008829 Ratio controlled mixing of liquids |
| 02/15/1977 | US4008093 Control method and equipment for charging ready-mixed concrete additives batchwise |
| 02/15/1977 | US4007755 Component injection system |
| 02/08/1977 | US4006752 Control for fluid flow system |
| 01/25/1977 | US4004602 Self-metering dual proportioner |
| 01/18/1977 | US4003242 By measuring the velocity of sound |
| 01/11/1977 | US4002271 Proportioning systems |
| 12/28/1976 | US3999686 Apparatus for continuously mixing and monitoring a syrup mixture |
| 12/21/1976 | US3998239 Gas dosing arrangement |
| 12/14/1976 | US3997826 Valve operator circuit with provision for presetting |
| 12/14/1976 | US3996953 Apparatus for dosing a flowing fluid |
| 11/23/1976 | US3993293 Automatic leaching system for hydro-metallurgical production of zinc |
| 10/19/1976 | US3987132 Air-liquid fuel mixture |
| 10/05/1976 | US3984510 Ratio controlled mixing of liquids |
| 09/14/1976 | US3980231 Proportioning sprayer device |
| 08/17/1976 | US3974847 Liquid additive dispenser |
| 08/10/1976 | US3973579 Apparatus for controlling the ratio of flow of two gases |
| 07/27/1976 | US3971341 Automatic proportioner for low-pressure watering troughs |
| 07/20/1976 | US3970942 Anti-hunting system for valve operator circuit |
| 07/06/1976 | US3967920 Horticulture spraying systems |
| 07/06/1976 | US3967634 Flow ratio control system |
| 06/15/1976 | US3963148 Apparatus for drawing, measuring and discharging proportional amounts of fluid |
| 06/15/1976 | US3963038 Liquid proportioning pump |
| 05/18/1976 | US3957073 Pressure balancing valve |
| 04/20/1976 | US3951311 Liquid measuring and mixing apparatus |
| 03/30/1976 | US3946902 Automatic feeder for infusion of a soluble solid solute into a circulating solvent |
| 03/02/1976 | US3942082 Multi-line chemical injection system |
| 02/24/1976 | US3940600 Method and apparatus for on-line non-interactive blending using an uncoupling matrix |
| 02/24/1976 | US3939858 Assembly and method of obtaining a controlled gas mixture |
| 02/10/1976 | US3937241 Device for injecting an adjuvant into a liquid |
| 02/03/1976 | US3935971 Double pump device for mixing two or more liquids with variable relative ratios and concentrations |
| 01/27/1976 | US3934604 Proportioning apparatus |
| 01/20/1976 | US3933039 Pulse flow detector |