US Patent 7389965 Tapered mini arm having an anti-loosening mechanism

The present invention provides an extension arm apparatus with angled clevis operation to provide enhanced mechanical leverage. The clevis adjusts along a path angled relative to an axis of the device, which significantly boosts performance and can reduce the size of the apparatus. Upper and lower channels of the device taper from a first width to a second width, providing a sleek and functional apparatus that can be used with heavy monitors, displays or other user equipment. When a forearm extension attached to an endcap of the apparatus, an interlocking washer and shaft configuration prevents the forearm extension-endcap connection from loosening during operation.