Adjustable Support Arm
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United States of America Patent
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N/A
Issued Date -
Oct 27, 2011
app pub date -
Apr 23, 2010
filing date -
Apr 23, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An adjustable support arm utilizing a spring having a dynamic attachment point to support the weight of an attached object. The adjustable support arm can comprise a lower bracket connected to an upper bracket by a parallelogram linkage. A spring is utilized to counterbalance the weight of an attached object. The first end of the spring can be attached to the upper link of the parallelogram linkage. The second end of the spring is attached to a drag link to provide a dynamic attachment point that automatically adjusts as the support arm is moved between the upper and lower vertical positions. Either a pivot link or a slot in the lower link can be used to guide the drag link's movement as the support arm's vertical height is adjusted.
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