Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7487795 | Chemical dispenser An improved chemical dispenser includes a plurality of eductors for drawing chemical into a diluent to produce an effluent, each eductor of the plurality selectively discharging via a baffle tube into a single common discharge tube. The effluent flow parameters are ... | 02/10/2009 |
| 7367361 | Eductor apparatus An eductor assembly includes an inlet connectable to a high pressure water source useful in firefighting, an outlet connectable to a fire hose and/or nozzle, and a venturi therebetween. An additive inlet communicates with the venturi so that a chemical additive, suc... | 05/06/2008 |
| 7261127 | Modified push-pull valve for filter systems and method A valve assembly is constructed for use in a filtering system including a pump and a filter with an inlet and an outlet, for example those systems used in conjunction with swimming pools. The assembly includes a valve body with a pump inlet, a filtered output, a was... | 08/28/2007 |
| 7125003 | Liquid treatment injector A reagent injector and/or aerator for aqueous fluids can use a variety of different removable end caps to adapt a venturi to different types of water treatment systems. The invention is adjustable because the end caps can be removed and springs that activate poppet ... | 10/24/2006 |
| 7108014 | Liquid diluting device A diluent passage 12 to introduce special liquid and a rinse liquid supply passage 13 which is separate from the diluent passage 12 are formed in the main body 10, and a plurality of jets are disposed at a cylindrical dial 18. A wa... | 09/19/2006 |
| 7051761 | Fill and bleed valve for liquid cooling system A fill and bleed valve for filling a liquid cooling system has a single axially movable plunger, slidable within a central block bore, from a normal operating position to a filling position that opens the cooling system to a supply of coolant. The filling operation ... | 05/30/2006 |
| 6966328 | Fluid diversion apparatus A fluid diversion apparatus, which has a first member and a second member, each said member having at least one fluid inlet and at least one fluid outlet, the first member comprising a fluid inlet adapted for connection to a fluid pipe, and a fluid outlet adapted fo... | 11/22/2005 |
| 6929027 | Liquid dilution device A liquid diluting device, with a small and simple structure, is capable of reliably sealing and simply changing dilution concentration. Diluent passages are formed in a first body, and a connecting passage for introducing special liquid connects to these diluent pas... | 08/16/2005 |
| 6929033 | Liquid dilution device A liquid dilution device is provided to prevent choking at a jet for adjusting the flow amount of a special liquid. In the liquid dilution device in which the special liquid from a liquid supply passage 33 of a liquid intake device 29, is introduced to... | 08/16/2005 |
| 6655401 | Multiple chemical product eductive dispenser A dispenser selectively mixes one or more chemical fluids into a motive fluid such as water by using diverting motive fluid to one or more channels formed in an eductor body, at least one of the channels being an eductor. When the motive fluid passes thro... | 12/02/2003 |
| 6619318 | Multiple flow rate eductive dispenser A dispenser for dispensing at two flow rates eductively draws a chemical fluid such as a concentrated cleaning solution for diluting with a motive fluid such as water. Using eduction rather than gravity feed provides a consistent dilution ratio over a ran... | 09/16/2003 |
| 6572347 | Fluid apparatus such as a pump or an accumulator The invention provides a fluid apparatus in which two or more kinds of chemical liquids can be rapidly stirred and mixed in a pump to a uniform concentration. A barrier membrane such as a bellows or a diaphragm that is reciprocally moved in the axial dire... | 06/03/2003 |
| 6190034 | Micro-mixer and mixing method A micro-mixer is disclosed having at least one mixing point which is connected to an inlet channel arrangement having at least two inlet channels and to an outlet channel arrangement, and a mixing method is disclosed for at least two fluids which are supp... | 02/20/2001 |
| 6158471 | Mixing device for changing a fluid into another flowing fluid A mixing device is suggested for introducing a fluid into another flowing liquid, especially for use as an oil lubricator. This lubricator consists of an exterior venturi pipe 18 and an interior venturi pipe 16, whereby a feed line 13 ensures the supply o... | 12/12/2000 |
| 6109286 | Additive injection system A system for flushing an injection system used on multiple loading arms. Use of a flush pump localized to each injection manifold at each loading arm results in a more cost effective manner of constructing an injection system with flushing capabilities. T... | 08/29/2000 |
| 6059193 | Fitting housing device for a water heater A fitting housing device which is to be equipped with a thermostat-controlled mixing valve (15) and a combined shutoff and reflux valve (21) for connection in a cold water inlet pipe and hot water outlet pipe of a water heater, where the fitting housing (... | 05/09/2000 |
| 5931181 | Anti-scald faucet system A faucet system includes a cold water control valve and a hot water control valve. These control valves are in communication with each other through a cold water supply conduit and a mixed water conduit. The hot water control valve includes a needle valve... | 08/03/1999 |
| 5927338 | Mixing eductor Disclosed is an improved mixing eductor (10) of the type wherein the primary liquid (17), e.g., water, is in a main stream (201) flowing in a downstream direction. A venturi tube (51) is in the eductor (10) and has an annular sharp edge (131) in the main ... | 07/27/1999 |
| 5765585 | Sample decade dilution system and procedure The method and apparatus of this disclosure are directed to a system for diluting a sample gas. For example, the sample gas may carry excessive water which creates difficulties in analysis. The apparatus includes an inlet line, a control valve which switc... | 06/16/1998 |
| 5676173 | In-line venturi An apparatus for inserting a venturi tube having an inlet, an aspirator inlet and an outlet directly within a fluid flow stream, with the aspirator inlet not in contact with the fluid flow stream is disclosed. A plate having a first aperture leading to th... | 10/14/1997 |
| 5466063 | Device for continuously mixing liquid additives into a fluid This invention concerns a device for continuously injecting liquid additives into a fluid. The device includes a jet eductors system for prediluting the additives. Applications in the oil and related industries, the building industry and similar. FIG. 1... | 11/14/1995 |
| 5339859 | Water conservation system A water conservation system including a thermostatically controlled valve means effectively diverts water from the hot water tank to a storage tank until the temperature or the water therefrom reaches a predetermined temperature. The stored water is then ... | 08/23/1994 |
| 5107893 | Apparatus for handling agricultural chemicals Apparatus for connection within a hose extending from a nurse tank assembly to a tractor mounted spray tank for utilizing a source of water under pressure within the hose from the nurse tank assembly to withdraw a chemical from a container and thereafter ... | 04/28/1992 |
| 4885084 | Nozzle/venturi with pressure differentiating bypass A nozzle/venturi with a bypass for controlling the pressure differential and therefore the amount of air which is entrained into the fluid stream. The nozzle/venturi assembly is utilized in a filtering system for removing contaminants from a water supply.... | 12/05/1989 |
| 4832072 | Fluid proportioning and mixing system The fluid proportioning and mixing unit includes a metering and pumping section and a mixer unit. The metering and pumping section is divided into a first solute section and a second section exclusively used for the conduction of motive fluid. At least tw... | 05/23/1989 |
| 4781467 | Foam-generating apparatus The invention involves a mixing apparatus capable of mixing two or more chemicals using a motive liquid. An ejector draws in a first chemical which is directed to the input of an eductor. A second chemical is connected directly to the eductor. The motive ... | 11/01/1988 |
| 4742942 | Foam producing malt beverage faucet A faucet for dispensing flat malt beverage and a smooth, creamy and stable foam having a shiftable faucet shaft which in one position dispenses flat beer and in a second position provides an alternate flow path through restricted orifices which increase t... | 05/10/1988 |
| 4664147 | Flow regulated mixer-injection system A mixer-injector device for introducing incrementally controllable amounts of active chemical reagent into a carrier fluid for delivery to a preselected location. Each device includes means for directing a pressurized carrier fluid thereinto and selective... | 05/12/1987 |
| 4466457 | Bypass and hard water mix valve A valve device for directing hard water past a softening means and for further mixing hard water with soft water. A double headed first valve is slidably mounted within the tubular shaped main body of the valve device and is separated internally therefrom... | 08/21/1984 |
| 4366840 | Fluid injector spray device A flow selectable fluid mixing device having a main manifold member (10) with a main fluid path (13) and a venturi creating conical secondary fluid path (14) and a rotatable manifold member (12) mounted on the main manifold member (10). The rotatable memb... | 01/04/1983 |
| 4173178 | Process for introducing a gas, in particular carbon dioxide, into a liquid, particularly a beverage, flowing through a line, and a device for performing the process An improvement in a process for introducing carbon dioxide into a liquid flowing through a main line, the improvement residing in withdrawing a portion of said liquid through a by-pass line, introducing carbon dioxide into said liquid while in said by-pas... | 11/06/1979 |
| 4135549 | Swimming pool fluid distribution system A main fluid pipe within a box-like housing has four auxiliary pipes connected thereto. Each auxiliary pipe extends to the outside of the housing. The first auxiliary pipe is connected to the drain of a swimming pool; the second is connected to the swimmi... | 01/23/1979 |
| 4068681 | Liquid proportioning device The Improved Liquid Proportioning Device of this invention comprises a combination of all the features of the liquid proportioning device set forth in Applicant's prior U.S. Pat. No. 2,856,234 with the addition of a closure device including air vent means... | 01/17/1978 |
| 4058120 | Vaporizer carousel for anesthesia machine This invention relates to an anesthesia dispensing device which comprises a turntable for carrying a plurality of vaporizers having an inlet and outlet port for each vaporizer, and a manifold having a feed port and an exhaust port with a passageway capabl... | 11/15/1977 |
| 4058296 | Mixing apparatus An apparatus is provided for mixing two or more fluids together in a desired ratio. The mixing apparatus includes primary and secondary conduits, one extending from a source of a first fluid and the other extending from a source of a second fluid, and a d... | 11/15/1977 |
| 4010768 | Two-stage jet pump proportioner A multiple stage jet proportioning and mixing pump system in which any variation occurring in the proportion ratio of the ultimate solution is confined essentially in the first proportioning stage operating at a low ratio below 1 to 5 with initial conflue... | 03/08/1977 |
| 3968932 | Applicator An applicator for applying chemicals to the soil and the like characterized by a section of main tubular conduit for being connected into a conventional farm irrigation line; a main container disposed adjacent the tubular conduit and having respective fil... | 07/13/1976 |
| 3941144 | Supply circuits for fluids under pressure This invention relates to supply circuits for fluids under pressure, particularly gases. Such circuits ordinarily comprise a main pipe between a source of fluid and a point of consumption, and to which main pipe is fitted a regulator and pressure-reducer ... | 03/02/1976 |
