Patent ID: 7393267
Filing Date: 2008-07-01
Classification: B24B

Abstract:
1. Floor sanding machine having a case body ( 11 ) and a plurality of sanding tools ( 30 ) arranged eccentrically in the case body ( 11 ) with tool shafts ( 31 ), in conjunction with which the axes of the tool shafts ( 31 ) are rotatably mounted about the axis of a central shaft ( 12 ) and the sanding tools ( 30 ) are rotatably mounted about the axis of the tool shaft ( 31 ), wherein the drive shaft of a drive ( 1 ) is rigidly connected via a central axis ( 12 ) to a main drive pulley ( 2 ), the main drive pulley ( 2 ) being maintained in positive engagement by means of a unilaterally and longitudinally grooved drive belt ( 3 ) with a gear mechanism drive pulley ( 10 ), tool drive pulleys ( 4 ) and a belt tensioner ( 6 ), the positive engagement being effected on the main drive pulley ( 2 ), the gear mechanism drive pulley ( 7 ) and the belt tensioner ( 6 ) via the side of the drive belt ( 3 ) provided with longitudinal grooves, and the positive engagement on the tool drive pulleys ( 4 ) being effected via the non-grooved rear side of the drive belt ( 3 ).