Wheel with interlocking hub and spacer
First Claim
Patent Images
1. A plastic wheel comprising:
- a rolling surface;
an axle support member operably associated with the rolling surface, wherein the axle support member has a central bore;
an axle retaining segment within the support member, the retaining segment including a first engagement portion; and
a spacer having a second engagement portion for engagement with the first engagement portion of the retaining segment.
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Abstract
An apparatus for allowing pre-assembly of a wheel and wheel spacer and a method of using the apparatus are disclosed. The apparatus provides a structure within the hub of a molded plastic wheel and a structure on a spacer segment for engagement of the two parts. A variety of embodiments are described in which the spacer can easily be snapped, screwed, or pressed into the wheel. This allows pre-assembly of the spacer and wheel so that when needed, a spacer need not be found or acquired, but is readily available to the user.
46 Citations
30 Claims
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1. A plastic wheel comprising:
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a rolling surface;
an axle support member operably associated with the rolling surface, wherein the axle support member has a central bore;
an axle retaining segment within the support member, the retaining segment including a first engagement portion; and
a spacer having a second engagement portion for engagement with the first engagement portion of the retaining segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system for providing mobility to an apparatus comprising:
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a wheel having an outer rolling surface and an inner axle receiving portion;
an axle inserted into the receiving portion of the wheel; and
a cylindrical sleeve carried on the axle between the wheel and the apparatus, wherein the sleeve is engageable with the wheel by manually screwing it into place. - View Dependent Claims (28, 29, 30)
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Specification