Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7399113 | Arrangement to produce recipe mixtures The invention relates to an assembly to produce recipe mixtures, with a variable-speed agitator drive, a mixing chamber (1) whose capacity is matched to the desired quantity of recipe mixture and that is enclosed by a lid (9), and an agitator tool (... | 07/15/2008 |
| 7316501 | Apparatus and method for mixing dissimilar fluids An apparatus and method for fluid mixing comprising a housing having an internal chamber and a rotatable unit disposed in the chamber. Sufficient clearance is provided between the rotatable unit and the housing to create space for the mixing of the two or more dissi... | 01/08/2008 |
| 7232476 | Apparatus for scum removal An apparatus for scum removal is disclosed wherein toothed paddle induces turbulent effect on the fluids present in the reactor by means of its rotary motion. This results in both breaking and radial displacement of the scum, accumulated on the fluid during the cour... | 06/19/2007 |
| 7210910 | Enhancements to high efficiency ceiling fan Twisted ceiling fan blades for low, medium and high speed operation of less than approximately 250 rpm. The novel blades twisted blades can be configured for 60″ and 64″ diameter fans, and have less blades (3 for example) than conventional flat type bladed fans ... | 05/01/2007 |
| 6250797 | Mixing impeller system having blades with slots extending essentially all the way between tip and hub ends thereof which facilitate mass transfer An axial flow mixing impeller system for efficient mass transfer by control of size of the bubbles of the fluid which is being dispersed, especially gases and liquids with viscosities greater than the liquid into which dispersion occurs, is obtained by cr... | 06/26/2001 |
| 5981269 | Apparatus for fermenting and composting food waste The present invention relates to an apparatus for fermenting and composting food waste which can compost food waste having much more weight by decomposing and practically reducing the waste at the source, such as homes, restaurants, etc., directly, or fer... | 11/09/1999 |
| 5951162 | Mixing impellers and impeller systems for mixing and blending liquids and liquid suspensions having efficient power consumption characteristics A mixing process may be carried out in a tank of a certain diameter. The process may also be constrained to the use of an impeller of certain diameter in order to obtain the flow pattern desired to carry out the process. The power consumption of the syste... | 09/14/1999 |
| 5887976 | Continuous kneading machine having at least one rotating shaft and paddles and notched adjusting plates mounted on each shaft A machine for continuous kneading, having at least one rotating shaft along which paddles are mounted, wherein notched feed adjusting plates are mounted on each shaft. In some embodiments, each feed adjusting plate is a C-shaped plate having a notch of ad... | 03/30/1999 |
| 5511877 | Staged rotary mixer A mixing device for mixing two or more liquids. A shell body is configured with a cavity having a longitudinal axis and circular cross-section which rotatably houses a shaft. The shaft is configured along a portion of its surface with grooves for receivin... | 04/30/1996 |
| 5470148 | Portable cement-mixing apparatus having upper and lower notched plates affixed to a shaft The apparatus for mixing cement includes a shaft connected to an engine for rotating the shaft. The shaft has mounted thereon a plurality of paddles for providing a pushing force and arranged so as to channel the flow of cement mix about the shaft to allo... | 11/28/1995 |
| 5407270 | Stirring pitcher A pitcher with a stirring device including a lid which is firmly fitted in the top end of the pitcher. The lid includes a rotatable disc sitting in a recess in the lid and rotated by an eccentric knob. A stirring device including a stem is fitted centrall... | 04/18/1995 |
| 5407273 | Double bladed mixing instrument with axially displaced blades A mixing instrument for the treatment of solids or individual solid components is attached to a shaft concentrically arranged in a horizontally positioned container. The shaft is mounted in the container in a rotatable fashion. A plurality of mixing instr... | 04/18/1995 |
| 5135310 | Mixing equipment especially for manufacturing starch adhesive A starch based adhesive is made in an agitator tank which has a first rotatable propeller shaft with a plurality of propellers distributed along the length thereof. Each of at least some of the propellers is surrounded by an apertured shroud, which could ... | 08/04/1992 |
| 4887911 | Developer mixer for electrophotographic copying machine A developer mixer for an electrophotographic copying machine comprises a shaft which is rotatably mounted in a developer tank and a plurality of fins affixed obliquely to the shaft. Each fin has a fan-shaped grooved section and the missing sections of mut... | 12/19/1989 |
| 4881821 | Apparatus for mixing and dosing synthetic resin components and process for the operation of this apparatus Apparatus for mixing and dosing at least two synthetic resin components to produce a single product includes a mixing head wherein the components are mixed together to form the product which is subsequently discharged. The mixing head includes a casing wi... | 11/21/1989 |
| 4792238 | Continuous dispersion apparatus having multi-step dispersion chambers An apparatus having a cylindrical structure which has therein a rotary shaft extending along the axis of the cylindrical structure to project beyond the lengthwise end portions thereof, and a plurality of dispersion chambers and an arbitrary number of rec... | 12/20/1988 |
| 4759633 | Apparatus and process for metering and mixing two different materials that are pasty or of low to high viscosity An apparatus for metering and mixing two different materials that are pasty or of low to high viscosity, includes a device for simultaneously delivering the materials from storage vessels to a mixing chamber, and a member for mixing the two materials in t... | 07/26/1988 |
| 4692029 | Comestible beater A device for preparing a beaten product and including a beater assembly driven rotatively about a generally vertical axis, with an improved beater assembly comprising an elongate rotor body having at least one blade unit formed integrally with the rotor b... | 09/08/1987 |
| 4243636 | Apparatus for the continuous liquid-phase catalytic oxidation of alkyl-substituted aromatic compounds In an apparatus for oxidizing an alkyl-substituted aromatic compound in the liquid phase with a molecular oxygen-containing gas in a lower aliphatic carboxylic acid solvent in the presence of an oxidation catalyst, said apparatus comprising a reaction ves... | 01/06/1981 |
| 4192615 | Sand mulling machine plow A plow for use in a sand mulling machine having a vertically axised bowl formed with a bottom wall and a cylindrical peripheral wall, and a rotatable hub upon which the vertically axised mulling rollers are mounted for mulling material against the periphe... | 03/11/1980 |
| 4140246 | Proportional control system for foundry sand mixing device Means for delivering a foundry sand mixture at a variable rate, the proportions of the ingredients in the mixture being constant as the total quantity varies. A single variable speed motor comprises the sole drive for separate components supplying differe... | 02/20/1979 |
| 4083653 | Stirring device A stirring device employs a shaft-mounted hub with five axially nested, radially extendable fins shaped to not only provide compact nesting of five fins to enter a bung opening of a drum, but also to provide ample surface area when extended for stirring.... | 04/11/1978 |
| 3934858 | Method and apparatus for mixing foundry materials A method of, and apparatus for, mixing foundry sand, resin binder and catalyst, wherein sand/resin and sand/catalyst mixtures are prepared separately in continuous mixers and conveyed to a final mixing chamber having a vertical high speed rotating shaft w... | 01/27/1976 |
