In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7231872 | Chocolate processing machine A chocolate tempering machine is digitally programmable for controlling the heating, cooling and rotation within the machine. The machine may be programmed to enable agitated, liquid chocolate to retain its proper viscosity for extended periods of time as well as mi... | 06/19/2007 |
| 7081265 | Ice cream maker A dual bowl ice cream maker and method for selectively driving one or two mixing bowls, each mixing bowl in a separate mixing compartment, without requiring manipulation of either mixing bowl. ... | 07/25/2006 |
| 6367371 | Automatic food processing device A food processing device for automatically cooking and processing food is shown. The device has a cylindrical cooking vessel positioned in a sloping manner and rotatably supported on rotary wheels. Variable heater elements are provided at the cooking vess... | 04/09/2002 |
| 5971602 | Eccentrically mounted drum mixer with internal mixing devices A drum-type mixer having a cylindrical-shaped drum mounted eccentrically on a drive shaft that rotates the drum. A second shaft, concentric with the drive shaft, extends inside of the drum and is operatively connected to mixing devices, such as scrapers, ... | 10/26/1999 |
| 5620251 | Compacting granulator A compacting granulator for continuous, compacting granulation comprises a substantially horizontal rotatable drum, through which an eccentric shaft extends, which carries compacting means which partly transfer substantial amounts of energy to the granula... | 04/15/1997 |
| 5551489 | Agglomeration of finely divided powders A method and system for improving the flow properties of finely divided powders is provided. The method includes (a) agglomerating the powder by passing it through a screw feeder; and (b) spheronizing the agglomerates. The method preferably further includ... | 09/03/1996 |
| 5525781 | Cooking device having stirring device including pivotably mounted utensil engagement element Stirring apparatus including a stirrer having an mounting the stirrer at the attachment end and driving the stirrer in motion in operative association with a utensil defining a utensil surface and a utensil contacting member mounted onto the termination e... | 06/11/1996 |
| 5412171 | Cooking device having stirrer movable about two mutually perpendicular axes A domestic cooking system including a base defining one or more cooking locations, electromagnetic induction apparatus for heating a food at the cooking location and apparatus for automatic stirring of the food at the cooking location.... | 05/02/1995 |
| 5236263 | Printing ink mixing apparatus An apparatus to mix printing inks consisting of a mixing container having a single power source for rotating the container and the mixing blade therein with an automatic safety power shut off upon detachment of the mixing blade and a guard member about th... | 08/17/1993 |
| 5038709 | Granulating and coating apparatus A granulating and coating apparatus in which a rotary drum containing powdery or granular material is rotated about the substantially horizontal axis for granulating and/or coating the powdery or granular material. The apparatus is provided with a disk va... | 08/13/1991 |
| 4826325 | Particle processing apparatus Herein disclosed is a particle processing apparatus to be used in a wide field including food, medical and chemical industries either for granulating or coating particles on a disk by rotating the disk in a barrel equipped with scrapers or for blending th... | 05/02/1989 |
| 4720194 | Liquid mixing apparatus Apparatus mixing printing inks consisting of two or more mixing containers having a single power source for rotating both the containers and the mixing blades therein and being arranged to rotate the containers and their respective mixing blades individua... | 01/19/1988 |
| 4706558 | Home chocolate processing apparatus A bowl, which accommodates a coating, is removably mounted in a casing. A moving device in the casing is coupled to the bowl for rotating said bowl. A heater is positioned in the casing in operative proximity with the bowl for melting the chocolate. A coo... | 11/17/1987 |
| 4674886 | Device for making frozen confections An apparatus for making frozen confections including a double-walled vessel consisting of a concentric cylindrical inner and outer vessels each having an upper open end and defining an annular space therebetween for containing a cooling material. The said... | 06/23/1987 |
| 4611922 | Apparatus for treating materials which are capable of flow Described is an apparatus for treating materials which are capable of flow, comprising a container (1) which rotates about is central axis (5) which is inclined with respect to the vertical, with a wall and/or bottom scraper plate (2) which is arranged su... | 09/16/1986 |
| 4212615 | Rotary drum agglomerating apparatus Agglomerating apparatus in the form of a rotating drum and a method for agglomerating and controlling the size consist of carbonaceous material, such as particulate coal, finely divided char and, optionally, a binder such as pitch. Control of the agglomer... | 07/15/1980 |
| 4166705 | Apparatus for mixing handcraft materials A novel apparatus for mixing handcraft materials is disclosed wherein a rotatable container has positioned therein a stationary scraper bar adjacent the inner surface of said container, and an elongated rotatable mixing member substantially in the center ... | 09/04/1979 |
| 4046496 | Apparatus for agglomerating finely divided agglomerative materials in a rotating drum A rotary drum assembly includes separate agglomerating and hardening drums that are rotated independently of each other. The agglomerating drum has a generally cylindrical configuration with an inner cylindrical wall. A scraper is rotatably positioned wit... | 09/06/1977 |
| 4023777 | Mixer with rotating mixing container The present invention relates to a mixer having a substantially vertically arranged rotating container of cylindrical or frustoconical shape, and a rotating mixing screw arranged therein, the said screw having relative movement along the container wall an... | 05/17/1977 |
| 3979026 | Apparatus for dispensing particulate and viscous liquid material An apparatus for dispensing particulate material or a viscous liquid which consists of a cylindrical material container section, a frustoconical chamber and an end plate mounted so as to separate the container and chamber. The container and chamber are ro... | 09/07/1976 |
| 3938787 | Apparatus for mixing and granulating bulk materials The apparatus is provided with a bowl rotatable about a vertical axis and accommodating therein two groups of vanes fixedly secured on a portion of a framework, overlying the bowl. The vanes adjoining the discharge opening of a bowl curve arcuately in lon... | 02/17/1976 |