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William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7226204 | Butter maker A butter maker having a housing for mounting on a countertop in a kitchen or the like. The butter maker includes a cream holding container in which cream is placed and also includes drive assembly having a shaft both rotatable along its vertical axis and reciprocal ... | 06/05/2007 |
| 7160020 | Methods for mixing and transferring flowable materials A method mixes and transfers a bone filling material. The method makes use of a receptacle for receiving components in an unmixed condition. A mixing element can be inserted into the receptacle to mix the components. An actuator having a drive member and a driven me... | 01/09/2007 |
| 6921192 | Bone cement mixing apparatus A bone cement mixing apparatus includes a bowl, an attachable/detachable lid, and a handle extending from the bowl. The bowl incorporates a bone cement vapor removal system that allows the extraction of bone cement vapors or fumes even after the lid has been detache... | 07/26/2005 |
| 6890492 | Parallel reactor with internal sensing and method of using same Devices and methods for controlling and monitoring the progress and properties of multiple reactions are disclosed. The method and apparatus are especially useful for synthesizing, screening, and characterizing combinatorial libraries, but also offer significant adv... | 05/10/2005 |
| 6702455 | Bone cement mixing apparatus having improved gearing arrangement for driving a mixing blade A bone cement mixing device has a canister which is modular in design and constructed from a transparent material. The mixing device further has a mixing head assembly having a crank which is operatively coupled to a mixing blade via a gear train. The gea... | 03/09/2004 |
| 6161954 | Mud mixing machine and coupler An apparatus for mixing powdered or premixed drywall joint compound and water to form a joint compound mixture or slurry includes a portable container rig with a container, pumping components, and mixing components on a dolly. A mixing element rests withi... | 12/19/2000 |
| 5497695 | Food steamer with automatic timed stirring paddle A food steamer with a stirring mechanism that can be set to start after a predetermined amount of time. A timer assembly and a gear assembly are mounted to the underside of the cover. The gear assembly includes a spring loaded gear that activates the gear... | 03/12/1996 |
| 5344234 | Toy beverage mixer and dispenser A toy beverage mixer and dispenser includes a horizontal support and vertical support combined to support a cylindrical mixing container. A crank housing is pivotally secured to the vertical support and includes a hand crank operated drive mechanism which... | 09/06/1994 |
| 5201263 | Cooking utensil with built-in automatic stirring device A cooking utensil with a built-in automatic stirring device includes a pot body and a cover which is provided on an open top of the pot body and which confines an enclosed space. A rotary knob is rotatably mounted on the cover and has an axial shaft which... | 04/13/1993 |
| 5163357 | Popcorn popper with floating stirring system A popcorn popper (10) for more effectively popping popcorn by agitating the popcorn during the heating process with a floating stirring system, the floating stirring system being designed to avoid jamming while the popcorn is being agitated and popped and... | 11/17/1992 |
| 4859073 | Fluid agitator and pump assembly A fluid agitator and pump assembly for thoroughly mixing fluids with heavier materials that settle to the bottom of the chamber. The chamber is tubular and stands vertical with two motors on the top surface; one motor rotates an axial tube having radial m... | 08/22/1989 |
| 4854718 | Manual blenders An improved manual blender comprises a circular vessel body having a spout; a lid suitable for covering the vessel body; a spinning means with a knob, which facilitates the manual spin, and an annular gear formed circumferentially in an inner side wall th... | 08/08/1989 |
| 4813785 | Mixing structure for paint colorant in a dispensing apparatus An apparatus for mixing a liquid colorant in a container. A flexible cable is rotated about its length to drive rotatable agitating structure in the container. Where a plurality of containers, each having agitating structure and an associated cable are us... | 03/21/1989 |
| 4676658 | Mixing apparatus Mixing apparatus having a mixing vessel which is pivotable by 180° about a horizontal axis and has a stationary stirrer drive motor. Such mixing apparatus is distinguished by a simple construction. Furthermore, the speed of rotation of the stirrer shaft ... | 06/30/1987 |
| 4429624 | Stirring arrangement This arrangement provides the stirring of the contents of a container. The motive force for the stirring action is supplied by connection of the stirring means to a selected pulley shaft of a pulley arrangement on which an alloy belt of nickel and titaniu... | 02/07/1984 |
