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Universal Clamping System
Developed for: Steve Bauer, RERC on Technology Transfer
  
The patented "universal clamping mechanism" replaces split ring
collars of three different diameters; in this illustration, diameters of
3/4", 7/8", and 1" are used. This provides a universal interface
for add on devices for wheelchairs and walkers, all of whom utilize these
standard sizes. The scalloped clamp assembly consists of three pieces:
- outer half, which accepts the fasteners or machine screws for assembly,
and is the cap for the clamp.
- nner half, or receiver for these fasteners, is also the
interface for any other attachment to be used.
- radial spline assembly
which is machined into the inner half and is the interface surface for
a radially indexable (5 degree increments)
attachment.
The actual clamping area his device is machined to accept three
different and distinct radius surfaces. In this case 3/4,
7/8, and 1” are
used. Each radius, progressing from the largest to the smallest
intersects each
other so that the resulting surface contains a portion of
the circumference of each (radius) as the contact area of the tubing
used.
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