Rotating head having oscillating blocks for leveling and polishing surfaces of granite, ceramic or marble
Patent 5161331 Issued on November 10, 1992. Estimated Expiration Date: 
March 20, 2011. 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.
March 20, 2011. 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 2582470 Grinding head for surfacing and polishing stone, marbles and other hard materials Patent #: 4965965 InventorAssigneeApplicationNo. 672354 filed on 03/20/1991US Classes:451/159, Oscillating451/41, Glass or stone abrading451/350Floor surfacing machineExaminersPrimary: Rose, Robert A.Attorney, Agent or FirmForeign Patent References
International ClassB24B 007/22Foreign Application Priority Data1990-03-27 ITAbstractThe rotating head comprises oscillating blocks 1 mounted on inclined pins 2 connected by means of connecting rods 5, the rods being mounted on eccentric pins fixed to toothed helicoidal wheels 9. The wheels mesh with a worm screw 10 having a vertical axis, the worm screw being mounted on the fixed structure of the apparatus. The entire complex is mobile at reduced speed, a fact which reduces the wear and consequently the necessity of maintenance and substitution of parts during operation.Field of SearchSLATE SURFACING | |
