Grinding head for surfacing and polishing stone, marbles and other hard materials
Patent 4965965 Issued on October 30, 1990. Estimated Expiration Date: 
June 27, 2009. 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.
June 27, 2009. 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 1208278 2105634 3609922 Computer controller optical surfacing (CCOS) lap pressure control system Method and apparatus for finishing surfaces Eccentric grinder with a device for changing a grinding motion Patent #: 4759152 InventorsApplicationNo. 372124 filed on 06/27/1989US Classes:451/159, Oscillating184/6.18, Vertical shaft384/397, For rotary shaft451/41, Glass or stone abrading451/270OrbitalExaminersPrimary: Schmidt, Frederick R.Assistant: Lavinder, Jack Attorney, Agent or FirmForeign Patent References
International ClassB24B 007/22AbstractGrinding head for surfacing and polishing stone, marbles and other hard materials including a rotating housing supporting a number of oscillating grinding blocks which during rotation of said housing are pressed against the surface to be treated during simulataneous supply of water to the working zone of said grinding blocks. The apparatus includes a new excenter mechanism for imparting to said grinding blocks an oscillatory tangential movement with respect to said grinding head during rotation thereof. The apparatus also renders possible a forced self-lubrication of bearing surfaces. | |
