Appeal No. 2006–0033 Παγε 5
Application No. 10/764,302
Gunnarson's invention relates to improvements in pipe-wrenches; and the
objects of his improvement are (1) to provide a self-adjusting wrench the can be shifted
instantly from one size of pipe to another, and (2) to provide a wrench that will grasp the
pipe on three different sides with series of
teeth graduated in size to the size of pipe they
are bound to work upon. Figure 1, shown
below, is a side view of the wrench, handle
excluded.
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