Wheeled device and wheel assembly
AssigneeMilwaukee Electric Tool Corporation
InventorMatthew W. Naiva
Life of this patent
Estimating the term…
Abstract
A wheel assembly, a wheeled device and a method of manufacturing a wheel assembly. The wheel assembly includes a core and an outer portion coupled to the core. The core includes a body and one or more projections extending from the body. Material of the outer portion may be positioned radially between the body and a portion of the projection to limit radial movement of the outer portion relative to the core. The projection may define a bore and/or an undercut. Material of the outer portion may encompass the projection and fill the bore and/or the undercut. Engagement of the material of the outer portion and the projection(s) may limit relative movement between the core and the outer portion radially, axially, circumferentially, etc.
Claims22
A wheel assembly for a wheeled device, the wheel assembly comprising:
- a core including an annular body defining a central axis and one or more projections extending from the body, each of the one or more projections having a wall defining a bore extending parallel to the central axis, each of the one or more projections including an overhang defining an undercut extending parallel to the central axis, the overhang and the undercut being circumferentially spaced from an associated wall, the overhang and the undercut being spaced radially inwardly from a radially outward portion of the associated wall;
- and
- an outer portion coupled to the core and having material positioned within the bore and within the undercut of each of the one or more projections to limit radial movement of the outer portion relative to the core.
A wheeled device comprising:
- a frame;
- and
- a wheel assembly supporting the frame, the wheel assembly including
- a core coupled to the frame for pivoting movement about a central axis, the core including a body and one or more projections extending from the body, each of the one or more projections having a wall defining a bore extending parallel to the central axis, each of the one or more projections including an overhang defining an undercut extending parallel to the central axis, the overhang and the undercut being circumferentially spaced from an associated wall, the overhang and the undercut being spaced radially inwardly from a radially outward portion of the associated wall, and
- an outer portion coupled to the core, the outer portion having material positioned within the bore and within the undercut of each projection to limit movement of the outer portion relative to the core.
A method of manufacturing a wheel assembly for a wheeled device, the method comprising:
- forming a core including a body and one or more projections extending from the body, forming the one or more projections including forming, in each of the one or more projections, a wall defining a bore, an overhang, and an undercut extending along a mold-pull direction, the overhang and the undercut being circumferentially spaced from an associated wall, the overhang and the undercut being spaced radially inwardly from a radially outward portion of the associated wall;
- and
- forming an outer portion onto the core including providing material of the outer portion within the bore and within the undercut.
Dependencies are inferred from the claim text.