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1. 发明授权

US4316305A Swivel caster assembly 失效
标题翻译：旋转脚轮组件
公开(公告)号：US4316305A
公开(公告)日：1982-02-23
申请号：US159010
申请日：1980-06-13
申请人： F. Leo Seaford
发明人： F. Leo Seaford
IPC分类号： B60B33/00
CPC分类号： B60B33/0002 , Y10T16/1867
摘要： An improved caster assembly having a stationary base member, a wheel assembly having a rotatable load-supporting wheel, and a ball bearing arrangement supporting the wheel assembly on the base for swiveling rotation with respect thereto. The ball bearing arrangement includes respective generally arcuate raceway surfaces which extend annularly on the base and wheel assembly in spaced, facing relationship to form a ball bearing raceway therebetween. Each raceway surface including two generally arcuate end portions, a portion at one end of each raceway surface being spaced from a cylindrical plane through the centers of the ball bearings in the raceway and another portion at the other end of each raceway surface intersecting and extending beyond the cylindrical plane from the spaced portion. The raceway surfaces are arranged so that the intersecting portion of each raceway surface is oriented in adjacent, facing relation to the spaced portion of the other raceway surface, whereby the spacing between the two raceway surfaces is offset from the cylindrical plane.
摘要翻译：具有固定基座构件的改进的脚轮组件，具有可旋转负载支撑轮的车轮组件以及支撑车轮组件在基座上以相对于其旋转的滚珠轴承装置。滚珠轴承装置包括各自大体上弧形的滚道表面，其在基座和轮组件上以间隔开的面对关系环形地延伸，以在它们之间形成滚珠轴承滚道。每个滚道表面包括两个大致弓形的端部，每个滚道表面的一端的一部分与圆柱面平行，穿过滚道中的滚珠轴承的中心，另一部分在每个滚道表面的另一端相交并延伸超过圆柱形平面从间隔开的部分。滚道表面被布置成使得每个滚道表面的交叉部分相对于另一个滚道表面的间隔部分相对地定向，由此两个滚道表面之间的间隔偏离圆柱形平面。

2. 发明授权

US4535827A Molded shock-absorbing wheel assembly 失效
标题翻译：成型减震轮组件
公开(公告)号：US4535827A
公开(公告)日：1985-08-20
申请号：US587302
申请日：1984-03-07
申请人： F. Leo Seaford
发明人： F. Leo Seaford
IPC分类号： B29C45/14 , B60B9/12 , B60B33/00 , B60B5/02 , B60C7/08
CPC分类号： B60B33/0063 , B29C45/14491 , B29C45/1459 , B60B33/0028 , B60B9/12
摘要： A shock-absorbing wheel assembly having an annular cast iron core member disposed concentrically about an annular bearing seat in spaced relation thereto, with the core member having passageways extending radially therethrough. A continuous integral mass of moldably polyurethane is provided to cover the exterior surface of the core member with a predetermined thickness, to fill the passageways in the core member, and to fill the spacing between the core member and the bearing seat. A method of forming the wheel assembly is provided, which includes locating the core member and bearing seat within a cylindrical mold cavity, permitting flowable polyurethane to flow into the interconnected spacings and passageways, and allowing the polyurethane to cure.
摘要翻译：一种减震轮组件，其具有环形铸铁芯件，该环形铸铁芯件与环形轴承座同心地布置成与其间隔开的关系，其中该芯件具有径向延伸穿过的通道。提供可塑性聚氨酯的连续整体质量以覆盖核心构件的外表面以预定厚度，以填充芯构件中的通道，并填充芯构件和轴承座之间的间隔。提供了一种形成车轮组件的方法，其包括将芯构件和轴承座定位在圆柱形模腔内，允许可流动的聚氨酯流入互连间隔和通道，并允许聚氨酯固化。

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