Mounting system for grinding wheels and the like
AssigneeNao Enterprises Inc.
InventorMitsukazu Momosaki
Life of this patent
Estimating the term…
Abstract
A mounting system for rotating tools such as grinding wheels in a hand-held power tool, includes a hub mountable to the tool drive shaft and a rotating tool element removably affixable to the hub. The tool has at least one flange that engages a corresponding circumferential groove in a hub wall. Both the hub and tool have complimentary lock elements to frictionally retain the tool in a releasably fixed orientation upon the hub. One of the lock elements is in the form of a depression, while a mating element located on the other ports is a complimentary projection.
Claims15
A mounting system for a rotating tool, comprising:
- a hub mountable to a tool drive shaft;
- a rotating tool element having a central aperture with a sidewall extending downwardly into the tool element from a face of the tool element, the tool element being removably mountable by way of the aperture upon the hub, the sidewall having at least one radially-extending flange projecting inwardly in a plane of the sidewall into the aperture;
- the hub having a face bearing a circumferentially-extending upward-extending wall alignable with the sidewall and a recess formed between the face and an outwardly projecting portion of the wall to accept and retain the at least one flange of the tool element when the tool element is rotated in a mounting direction with respect to the hub, the recess having at least one further inwardly-directed depression in the wall complementary to the at least one radially-extending flange;
- a radially-extending flange and a further depression each forming a complementary one of projecting lock element means and depression means to frictionally retain the tool element in a releasable fixed orientation upon the hub with the projecting lock element being engaged by the depression when the tool element is rotated in the mounting direction with respect to the hub.
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The mounting system of claim 13, wherein the projecting lock element means is located on a base of the hub.
A mounting system for a rotating tool, comprising:
- a hub mountable to a tool drive shaft, the hub having a first face with a circumferentially-extending wall projecting upwardly therefrom with at least one upper outwardly-extending circumferential ledge portion forming a corresponding recess between the ledge portion and the first face;
- a rotating tool element having a first generally planar face and a central aperture sized to receive the at least one ledge portion of the hub and having at least one complementary circumferentially inwardly-directed flange portion dimensioned to be received by the recesses, the tool element being removably mountable by way of the aperture upon the hub with the first face of the hub and the first face of the tool element being in an abutting relationship when the at least one flange portion is received by the at least one recess,
- the first face of the hub and the first face of the tool element each having a complementary one of projecting lock element means and depression means to frictionally retain the tool element in a releasable fixed orientation upon the hub with the projecting lock element means being engaged by the depression means when the tool element is rotated to a locking position.
Dependencies are inferred from the claim text.