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    Caster support structure
    261.
    发明授权
    Caster support structure 失效
    脚轮支撑结构

    公开(公告)号：US4068342A

    公开(公告)日：1978-01-17

    申请号：US707842

    申请日：1976-07-22

    Applicant: Vernon J. Carrier

    Inventor： Vernon J. Carrier

    IPC: B60B33/00

    CPC classification number: B60B33/0002 ,  Y10S16/27 ,  Y10T16/1867 ,  Y10T16/201 ,  Y10T16/211

    Abstract: An effective, relatively inexpensive, improved caster support structure can be manufactured by molding an appropriate polymer, preferably polypropylene, around a retainer forming a part of a conventional bearing into the shape of a housing. The housing is preferably shaped so as to include an elongated first cylinder which is coaxial with a second cylinder of greater diameter than the first. The bearing is located within a cavity at the end of a second cylinder remote from the first cylinder and is held in place because the portion of the retainer adjacent to the end of the second cylinder remote from the first is of smaller diameter than at least another portion of the retainer. The retainer is held against movement in such a way that it cannot be displaced by the shape of the retainer and housing and by a compressive type force resulting from a polymer orientation. The internal structure of a polymer necessary to exert this force is developed within the polymer as a result of cooling of the polymer material from a temperature at which it will flow during molding to ambient temperature.

    Abstract translation: 可以通过将形成传统轴承的一部分的保持器的合适的聚合物（优选聚丙烯）模制成壳体的形状来制造有效的，相对便宜的改进的脚轮支撑结构。 壳体优选地成形为包括细长的第一圆柱体，该第一圆柱体与第二圆柱同轴，该第二圆柱体的直径大于第一圆柱体的直径。 轴承位于远离第一气缸的第二气缸的端部处的腔内，并且被保持就位，因为与第一气缸相邻的第二气缸的与第一气缸相邻的端部的部分的直径比至少另一个更小 保持器的一部分。 保持器保持抵抗运动，使得其不能被保持器和壳体的形状以及由聚合物取向产生的压缩型力而移位。 由于聚合物材料从模制过程中流动到环境温度的温度冷却，所以在聚合物内形成施加该力所需的聚合物的内部结构。

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