Prosthetic Arm Force Reducer Team 1 – Halliday's ... - Ohio University

was given a few days to come up with some conceptual designs of their own. Once properly
prepared, we would meet once more as a whole and discuss different alternatives that each
member had thought of with regard to our project idea(s). This practice has been the most
effective process that our group has used to generate alternative concepts. These concepts were
drawn on a board in front of all members and discussion was given to each idea. No concept was
thrown out, but instead the pros and cons of each device were debated so that each member
might be able to come up with ideas for improvement or new ideas all together. Sketching and
solid edge modeling of these concepts are shown below.
5.1.1 Concept A – Fabricated Hook
Figure 5.1.1 – Sketch of Initial Hook Concept
The initial concept of a hook to be fabricated is shown in Figure 5.1.1. This hook utilized a
vector system by allowing the “screw adjustment” on the left side of the drawing to side between
the upper position and lower position, symbolized by the arrow in the drawing. An additional
feature of this first design was the implementation of an adjustable grip width by utilizing a
movable jaw. The dashed line in the bottom right of the drawing shows the “cart” that the
movable jaw would have moved through in order to accomplish this feature. Future contact with
Tim Lang cited that this feature was not needed and would have been a waste of resources.
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