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1. 发明授权

US09056524B2 Caster wheel with parabolic tread-hub interface 有权
标题翻译：脚轮与抛物面胎面接口
公开(公告)号：US09056524B2
公开(公告)日：2015-06-16
申请号：US14470101
申请日：2014-08-27
申请人： Caster Concepts, Inc.
发明人： Elmer Lee
IPC分类号： B60B33/00 , B60B27/00 , B60B27/02 , B60B3/00
CPC分类号： B60B33/0047 , B60B3/001 , B60B27/0005 , B60B27/02 , B60B33/0028 , B60B33/0039 , B60B33/0042 , B60B2900/311 , B60B2900/711 , Y10T16/1847 , Y10T16/1853
摘要： A caster wheel assembly includes at least one hub that has an annularly dished concave region disposed between a pair of cylindrical lips about its outer periphery. An elastomeric tread has a convex inner periphery that seats in the concave region of the hub. The interface between the hub and tread is parabolic in cross-section to manage load-inducted stresses in the tread. The parabolic cross-section is defined by the equation y=A*x2, where A is between 1.5 and 4. A cylindrical lip/pad interface is established between hub and tread on opposite sides of the parabolic interface to accommodate high load situations. A bearing is supported in the hub, and a bushing inside the bearing. An axle shaft passing through the bushing attaches the hub and tread to a support bracket for use in a wide variety of industrial applications.
摘要翻译：脚轮组件包括至少一个轮毂，该轮毂具有围绕其外周缘布置在一对圆柱形唇缘之间的环形凹陷凹区域。弹性体胎面具有位于毂的凹入区域中的凸形内周边。轮毂和胎面之间的界面在横截面上是抛物线的，用于管理胎面中的载荷引导应力。抛物线横截面由方程y = A * x2定义，其中A在1.5和4之间。在抛物面界面的相对侧上的轮毂和胎面之间建立圆柱形唇/垫接口，以适应高负载情况。轴承支撑在轮毂中，轴承支撑在轴承内。穿过衬套的车轴将轮毂和胎面附接到支撑支架，以用于各种各样的工业应用中。

2. 发明授权

US10377403B2 Powered utility cart and compliant drive wheel therefor 有权
公开(公告)号：US10377403B2
公开(公告)日：2019-08-13
申请号：US15342191
申请日：2016-11-03
申请人： Caster Concepts, Inc.
发明人： Elmer Lee , Alex Harden
IPC分类号： B62B5/00 , B60K1/04 , B60K7/00 , B60K17/04 , B62B5/06
摘要： A lift-enabled motorized wheel assembly and material handling cart. A drive wheel is supported on an axel between a fixed leg and a floating leg. The axel passes through the fixed leg without interference, but is captured in the floating leg by a self-aligning bearing. The axle is driven by a drive motor that is bolted to the fixed leg through a right-angle gearbox. A vertical suspension unit provides compliance for drive wheel traction. A lifter sub-assembly alternately raises and lowers the drive wheel into and out of contact with the ground. The lift-enabled motorized wheel assembly is attached to the bottom of a cart frame, along with a plurality of caster wheels. The cart includes a tow-bar that is moveable between raised and lowered positions. When the tow-bar is lowered condition for towing, the drive wheel automatically lifts out of contact with the ground.

3. 发明申请

US20190092365A1 POWERED UTILITY CART AND COMPLIANT DRIVE WHEEL THEREFOR 审中-公开
公开(公告)号：US20190092365A1
公开(公告)日：2019-03-28
申请号：US16205746
申请日：2018-11-30
申请人： Caster Concepts, Inc.
发明人： Elmer Lee , Alex Harden
IPC分类号： B62B5/00 , B60K17/04 , B62B5/06 , B60K7/00 , B60K1/04
摘要： A lift-enabled motorized wheel assembly and material handling cart. A drive wheel is supported on an axel between a fixed leg and a floating leg. The axel passes through the fixed leg without interference, but is captured in the floating leg by a self-aligning bearing. The axle is driven by a drive motor that is bolted to the fixed leg through a right-angle gearbox. A vertical suspension unit provides compliance for drive wheel traction. A lifter sub-assembly alternately raises and lowers the drive wheel into and out of contact with the ground. The lift-enabled motorized wheel assembly is attached to the bottom of a cart frame, along with a plurality of caster wheels. The cart includes a tow-bar that is moveable between raised and lowered positions. When the tow-bar is lowered condition for towing, the drive wheel automatically lifts out of contact with the ground.

4. 发明申请

US20170129522A1 POWERED UTILITY CART AND COMPLIANT DRIVE WHEEL THEREFOR 审中-公开
公开(公告)号：US20170129522A1
公开(公告)日：2017-05-11
申请号：US15342191
申请日：2016-11-03
申请人： Caster Concepts, Inc.
发明人： Elmer Lee , Alex Harden
IPC分类号： B62B5/00 , B62B5/06 , B60K17/04 , B60K1/04 , B60K7/00
CPC分类号： B62B5/0043 , B60K1/04 , B60K7/0007 , B60K17/043 , B60K2001/0438 , B60K2007/0038 , B60K2007/0069 , B60Y2200/62 , B60Y2200/86 , B60Y2200/91 , B62B5/0053 , B62B5/0056 , B62B5/06 , B62B2205/104
摘要： A lift-enabled motorized wheel assembly and material handling cart. A drive wheel is supported on an axel between a fixed leg and a floating leg. The axel passes through the fixed leg without interference, but is captured in the floating leg by a self-aligning bearing. The axle is driven by a drive motor that is bolted to the fixed leg through a right-angle gearbox. A vertical suspension unit provides compliance for drive wheel traction. A lifter sub-assembly alternately raises and lowers the drive wheel into and out of contact with the ground. The lift-enabled motorized wheel assembly is attached to the bottom of a cart frame, along with a plurality of caster wheels. The cart includes a tow-bar that is moveable between raised and lowered positions. When the tow-bar is lowered condition for towing, the drive wheel automatically lifts out of contact with the ground.

5. 发明授权

US10703401B2 Powered utility cart and compliant drive wheel therefor 有权
公开(公告)号：US10703401B2
公开(公告)日：2020-07-07
申请号：US16205746
申请日：2018-11-30
申请人： Caster Concepts, Inc.
发明人： Elmer Lee , Alex Harden
IPC分类号： B62B5/00 , B60K1/04 , B60K7/00 , B60K17/04 , B62B5/06
摘要： A lift-enabled motorized wheel assembly and material handling cart. A drive wheel is supported on an axel between a fixed leg and a floating leg. The axel passes through the fixed leg without interference, but is captured in the floating leg by a self-aligning bearing. The axle is driven by a drive motor that is bolted to the fixed leg through a right-angle gearbox. A vertical suspension unit provides compliance for drive wheel traction. A lifter sub-assembly alternately raises and lowers the drive wheel into and out of contact with the ground. The lift-enabled motorized wheel assembly is attached to the bottom of a cart frame, along with a plurality of caster wheels. The cart includes a tow-bar that is moveable between raised and lowered positions. When the tow-bar is lowered condition for towing, the drive wheel automatically lifts out of contact with the ground.

6. 发明申请

US20140359970A1 CASTER WHEEL WITH PARABOLIC TREAD-HUB INTERFACE 有权
标题翻译：带轮廓线的车轮
公开(公告)号：US20140359970A1
公开(公告)日：2014-12-11
申请号：US14470101
申请日：2014-08-27
申请人： Caster Concepts, Inc.
发明人： Elmer Lee
IPC分类号： B60B33/00
CPC分类号： B60B33/0047 , B60B3/001 , B60B27/0005 , B60B27/02 , B60B33/0028 , B60B33/0039 , B60B33/0042 , B60B2900/311 , B60B2900/711 , Y10T16/1847 , Y10T16/1853
摘要： A caster wheel assembly includes at least one hub that has an annularly dished concave region disposed between a pair of cylindrical lips about its outer periphery. An elastomeric tread has a convex inner periphery that seats in the concave region of the hub. The interface between the hub and tread is parabolic in cross-section to manage load-inducted stresses in the tread. The parabolic cross-section is defined by the equation y=A*x2, where A is between 1.5 and 4. A cylindrical lip/pad interface is established between hub and tread on opposite sides of the parabolic interface to accommodate high load situations. A bearing is supported in the hub, and a bushing inside the bearing. An axle shaft passing through the bushing attaches the hub and tread to a support bracket for use in a wide variety of industrial applications.
摘要翻译：脚轮组件包括至少一个轮毂，该轮毂具有围绕其外周缘布置在一对圆柱形唇缘之间的环形凹陷凹区域。弹性体胎面具有位于毂的凹入区域中的凸形内周边。轮毂和胎面之间的界面在横截面上是抛物线的，用于管理胎面中的载荷引导应力。抛物线横截面由方程y = A * x2定义，其中A在1.5和4之间。在抛物面界面的相对侧上的轮毂和胎面之间建立圆柱形唇/垫接口，以适应高负载情况。轴承支撑在轮毂中，轴承支撑在轴承内。穿过衬套的车轴将轮毂和胎面附接到支撑支架，以用于各种各样的工业应用中。

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