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US 7,029,384 B2Granted
Grinding disk
AssigneeFestool GmbH
InventorsJohannes Steimel, Rüdiger Graner
Life of this patent
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AssigneeFestool GmbH
InventorsJohannes Steimel, Rüdiger Graner
Estimating the term…
A grinding disk (13) for manually held, motor-driven grinders (1) has a centrally arranged fastening recess (15) open at the grinding disk upper side with an internal thread arrangement (16), with which the grinding disk (13) can be screwed onto a connecting part (8), which is arranged on the side of the grinder and is driven for the grinding motion during operation, and which connecting part has a thread section (11) with an external thread arrangement (12), which is associated with the internal thread arrangement (16) of the grinding disk (13). The internal thread arrangement (16) is formed by a multiple thread with at least two thread courses, which are arranged angularly offset to one another. The diameter ratio between the diameter of the internal thread arrangement (16) and the outside diameter of the grinding disk (13) is at least approximately 0.25.
A grinding disk for manually held, motor-driven grinders, which grinding disk has a centrally arranged fastening recess open at the grinding disk upper side with an internal thread arrangement so that the grinding disk can be screwed onto a connecting part, which is arranged on the side of the grinder and is driven for the grinding motion during operation, and which connecting part has a thread section with an external thread arrangement cooperating with the internal thread arrangement of the grinding disk, wherein the internal thread arrangement is formed by a multiple thread with at least two thread courses, which are arranged angularly offset to one another, and that the diameter ratio between the diameter of the internal thread arrangement and the outside diameter of the grinding disk is at least approximately 0.25.
Dependencies are inferred from the claim text.