Grinder with dust exhaust means

A grinding tool for grinders having a drive shaft which oscillates about a pivot axis fixed on said grinder, said grinding tool comprising:

• a tool element having a grinding surface and at least one corner region;
• an aspirating port disposed on said tool element;
• an exhaust port located on a portion of said tool element facing away from said grinding surface and outside of said corner region;
• and
• at least one suction channel extending throughout said tool element from the aspirating port to the exhaust port;
• wherein said aspirating port is arranged in said grinding surface of at least one corner region;
• and
• wherein said exhaust port is arranged outside of the at least one corner region at a minimal radial distance from said pivot axis and extends in a radial direction in relation to said pivot axis over up to half of the maximum radial extend of said grinding element.

A grinding tool for grinders having a drive shaft which oscillates about a pivot axis fixed on said grinder, said grinding tool comprising:

• a tool element having a grinding surface and at least one corner region;
• an aspirating port disposed on said tool element;
• a plurality of exhaust ports located on a portion of said tool element facing away from said grinding surface and outside of said corner region;
• and
• at least one suction channel extending throughout said tool element from the aspirating port to the exhaust ports;
• wherein said aspirating port is arranged in said grinding surface of at least one corner region;
• wherein said exhaust port is arranged outside of the at least one corner region;
• wherein said suction channel is a ring channel extending in the tool element and connecting said exhaust ports;
• wherein the configuration of said ring channel is made to match an external contour of said grinding tool element;
• and
• wherein said ring channel extends at a distance from the outer periphery of the grinding tool element.

A grinding tool for grinders having a drive shaft which oscillates about a pivot axis fixed on said grinder, said grinding tool comprising:

• a tool element having a grinding surface and at least one corner region;
• at least one aspirating port disposed on said tool element;
• at least one exhaust port located on a portion of said tool element facing away from said grinding surface and outside of said corner region;
• and
• at least one suction channel extending throughout said tool element from said at least one aspirating port to said at least one exhaust port;
• wherein said at least one aspirating port is arranged in said grinding surface of at least one corner region;
• wherein said at least one exhaust port is arranged outside of the at least one corner region;
• wherein the grinding element is of two-cornered or three-cornered configuration and has a diadic or triadic axis symmetry with respect to its shape and the arrangement of said aspirating ports and said exhaust ports.

A grinding tool for grinders having a drive shaft which oscillates about a pivot axis fixed on said grinder, said grinding tool comprising:

• a tool element having a grinding surface and at least one corner region;
• at least one aspirating port disposed on said tool element;
• an exhaust port located on a portion of said tool element facing away from said grinding surface and outside of said corner region;
• and
• at least one suction channel, in the form of a ring channel, extending throughout said tool element from said at least one aspirating port to said exhaust port;
• wherein said aspirating port is arranged in said grinding surface of at least one corner region;
• and
• wherein said exhaust port is arranged outside of the at least one corner region;
• further comprising:
• second aspirating ports disposed at the outer periphery of said tool element;
• and
• channels extending from said ring channel in the direction of the outer periphery of the tool element and communicating with said second aspirating ports.

A grinding tool for grinders with a drive shaft which oscillates about a pivot axis fixed on said grinder and with exhaust port connection means, said grinding tool having:

• means for fixedly connecting it to said drive shaft;
• a grinding surface;
• a surface opposite said grinding surface and extending perpendicularly to said pivot axis;
• at least one corner region;
• at least one aspirating port arranged in said grinding surface and in said corner region;
• at least one exhaust port located in said surface opposite said grinding surface and outside said corner region, said exhaust port being freely movable with respect to said exhaust port connection means;
• and
• at least one suction channel extending from said aspirating port to said exhaust port.

A grinding tool for grinders with a drive shaft which oscillates about a pivot axis fixed on said grinder and with exhaust port connection means, said grinding tool having:

• means for fixedly connecting it to said drive shaft;
• a grinding surface;
• a side of said grinding tool facing away from said grinding surface;
• at least one corner region;
• at least one aspirating port arranged in said grinding surface and in said corner region;
• at least one exhaust port located on said side facing away from said grinding surface and outside said corner region and arranged in a position displaced through an angle of rotation relative to said corner region with said pivot axis being the axis of rotation, said exhaust port being freely movable with respect to said exhaust port connection means;
• and
• at least one suction channel extending from said aspirating port to said exhaust port.

A grinding tool for grinders with a drive shaft which oscillates about a pivot axis fixed on said grinder, said grinding tool having:

• means for fixedly connecting it to said drive shaft;
• a grinding surface;
• a side of said grinding tool facing away from said grinding surface;
• at least one corner region;
• at least one aspirating port arranged in said grinding surface and in said corner region;
• at least one exhaust port located on said side facing away from said grinding surface and outside said corner region;
• a sealing surface surrounding said exhaust port and lying in a geometrical plane which is invariant with respect to pivotal motion of said grinding tool;
• and
• at least one suction channel extending from said aspirating port to said exhaust port.