Belt drive for a motor-driven tool
AssigneeMakita Corporation
InventorManfred Doering
Life of this patent
Estimating the term…
Abstract
In order to provide a belt drive for a motor-driven tool with a first, drive-side belt pulley, a second, tool-side belt pulley and a belt that can be tensioned over the first and the second belt pulley, that is characterized by being easier to use, it is proposed that a cam, rigidly connected with a shaft, is arranged in the first or second belt pulley, whereby during a rotational movement of the shaft the belt pulley can be moved from an eccentric arrangement in relation to the shaft into a concentric arrangement by way of a translational movement and a rotational movement of the belt pulley.
Claims11
A belt drive for a motor-driven tool, comprising:
- a work-side belt pulley;
- a tool-side belt pulley;
- a belt tensioned over the work-side belt pulley and the tool-side belt pulley;
- a cam, rigidly connected to a shaft, arranged in of the work-side belt pulley and the tool-side belt pulley, the cam having a circular shape defined by an outer circumferential surface and a guide that projects from the outer circumferential surface,
- wherein the guide is configured to guide the cam in the one of the work side belt pulley and the tool-side belt pulley, and
- whereby during a rotating movement of the shaft the one of the work-side belt pulley and the tool-side belt pulley is movable via the cam from an eccentric arrangement with regard to the shaft into a concentric arrangement by a translational and a rotational movement of the one of the work-side belt pulley and the tool-side belt pulley.
Dependencies are inferred from the claim text.