| 摘要 |
<p>A loading arm having an inner conduit section, an outer conduit section, and a manually operable arm extension, is disclosed. The entire arm assembly is rotatable about a vertical axis, and a motor is provided to raise and lower the inner conduit section about a horizontal axis. Two parallel rods are connected at one end to a fixed link at said horizontal axis and connected at the opposite end to the outer conduit section to maintain the outer conduit section in a fixed attitude at any position of the inner conduit section.</p> |
