Coffee grinder
Patent 5201474 Issued on April 13, 1993. Estimated Expiration Date: 
August 3, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 3, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2852202 2900140 3610540 Spiral groove pattern refiner plates Grinding mill Precision coffee grinder Fiber optic ocular endoscope Apparatus for comminuting materials such as documents, etc. Discharge chute unit for coffee grinders Patent #: 4813622 InventorApplicationNo. 562757 filed on 08/03/1990US Classes:241/100, With independent removable or detachable material receiver or receiver engaging means241/101.4, Prior shaping means (e.g., quartering)241/246, Axially mounted rotary propeller or screw241/258, Rotary shaft supported above rotary comminuting member241/259.1With means vary space between surfacesExaminersPrimary: Rosenbaum, MarkAssistant: Chin, Frances Attorney, Agent or FirmForeign Patent References
International ClassB02C 019/00AbstractA coffee grinder comprises a bin for holding a supply of coffee beans to be ground, a grinding assembly for receiving beans from the bin and grinding the same to a desired grind size, and a collection receptacle for receiving the ground coffee from the grinding assembly. The grinding assembly comprises blades for cutting the beans to a relatively uniform size, which blades are configured and located for feeding the cut beans in an auger-like fashion to burrs. The burrs are configured and arranged for grinding the beans to a desired grind size and for delivering the same to the collection receptacle, such that the beans make a single pass through a grinding path comprising the blades and the burrs.Field of SearchWith independent removable or detachable material receiver or receiver engaging meansPrior shaping means (e.g., quartering) Axially mounted rotary propeller or screw Hopper supply Rotary shaft supported above rotary comminuting member With means vary space between surfaces Opposed, flat coaxial surfaces (e.g., disk mill) Having plural angularly related land and groove | |
