| 摘要 |
The present invention provides enhanced extension arm assemblies for supporting various user devices such as flat panel displays and other equipment. The extension arm assemblies include endcaps that connect to a mounting device or to other equipment. In order to stably support the weight of the user device, the endcap, and in particular the endcap shaft, needs to be fabricated accordingly. In one embodiment, the shaft of the endcap has an enhanced cruciform configuration where corners along the shaft are radiused or otherwise curved. In another embodiment, the endcap shaft is formed of wrought steel and the main body of the endcap is cast onto the shaft. These shaft configurations provide superior strength and stability. Another endcap configuration integrally casts a tube with the endcap body and provides enhanced range of motion for the extension arm. Methods of manufacturing these devices are also provided.
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