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公开(公告)号：US636757A
公开(公告)日：1899-11-14
申请号：US1899719252
申请日：1899-06-03
发明人： CARRAWAY ESTHER P H
CPC分类号： A61G5/042 , Y10T16/188 , Y10T16/1893
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公开(公告)号：US20050028319A1
公开(公告)日：2005-02-10
申请号：US10937168
申请日：2004-09-09
IPC分类号： B60B33/00 , B60B33/04 , B60B33/08 , B60R20060101
CPC分类号： B60B33/04 , A61G5/10 , B60B33/0002 , B60B33/0007 , B60B33/0021 , B60B33/0039 , B60B33/0049 , B60B33/0057 , B60B33/0068 , B60B33/0073 , Y10T16/18 , Y10T16/182 , Y10T16/1873 , Y10T16/1893 , Y10T16/19
摘要： An improved wheel assembly comprises a caster swivel post that is adapted to pivot about a pivot axis transverse to the caster swivel post. A caster fork is supported for rotation relative to the caster swivel post and rotatably supports a caster wheel. The caster swivel post is adapted selectively pivot about the pivot axis that is transverse to the caster swivel post or be held in a substantially fixed position. A setscrew can be threadable into an upper end of a pivot nut to hold the pivot nut and thus the caster swivel post in a fixed position within the housing.
摘要翻译： 改进的轮组件包括脚轮旋转柱，其适于围绕横向于脚轮旋转柱的枢转轴线枢转。 脚轮叉被支撑以相对于脚轮旋转柱旋转并可旋转地支撑脚轮。 脚轮旋转柱适于围绕横向于脚轮旋转柱的枢转轴线选择性地枢转或被保持在基本上固定的位置。 固定螺丝可以螺纹连接到枢轴螺母的上端中，以将枢轴螺母保持在固定位置，从而将脚轮旋转柱固定在壳体内的固定位置。
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公开(公告)号：US20040232683A1
公开(公告)日：2004-11-25
申请号：US10849654
申请日：2004-05-20
发明人： James P. Mulhern
IPC分类号： B62M001/14 , B60S009/00 , B60R021/00 , F16M001/00
CPC分类号： A61G5/043 , A61G5/042 , A61G5/06 , A61G5/063 , A61G5/1089 , A61G2203/36 , Y10S180/907 , Y10T16/18 , Y10T16/1867 , Y10T16/1889 , Y10T16/1893
摘要： A wheelchair is provided with front anti-tip wheels adapted to assist the wheelchair in mounting an obstacle that the wheelchair approaches obliquely. The anti-tip wheels may function as casters, capable of rotating about a vertical axis, or may be fixed for rotation about a horizontal axis only. The anti-tip wheels may include lateral convex surfaces which tend to allow the anti-tip wheel to slide or roll over the obstacle. The lateral convex surfaces may be provided by a laterally oriented rolling element, a convex-shaped hub, a convex-shaped housing that partially surrounds the wheel, or a ball-shaped wheel. Alternatively, rotation of the anti-tip wheel may be controlled such that the wheel rolling surface faces and engages the obstacle.
摘要翻译： 轮椅上设置有前防倾斜轮，其适于辅助轮椅安装轮椅靠近的障碍物。 反头轮可以作为能够围绕垂直轴旋转的脚轮，或者可以仅固定成围绕水平轴旋转。 反尖端轮可以包括横向凸形表面，其倾向于允许反尖端车轮滑动或滚动障碍物。 横向凸面可以由侧向定向的滚动元件，凸形轮毂，部分地围绕车轮的凸形壳体或球形轮轮提供。 或者，可以控制反尖端轮的旋转，使得车轮滚动面面对并接合障碍物。
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公开(公告)号：US698224A
公开(公告)日：1902-04-22
申请号：US1902092255
申请日：1902-02-03
申请人： RAYMOND SILAS H
发明人： RAYMOND SILAS H
CPC分类号： A61G5/042 , Y10T16/1889 , Y10T16/1893 , Y10T16/214
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公开(公告)号：US627012A
公开(公告)日：1899-06-13
申请号：US627012D
CPC分类号： A61G5/042 , Y10T16/18 , Y10T16/1853 , Y10T16/1889 , Y10T16/1893 , Y10T16/214
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公开(公告)号：US581216A
公开(公告)日：1897-04-20
申请号：US581216D
CPC分类号： B60B33/0002 , Y10T16/1847 , Y10T16/1867 , Y10T16/1893
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