Appeal No. 2006-2116
Application No. 08/879,517
By utilization of my invention many different styles
of incisions or cuts, with the instrument at various
angles, may be made, and the saw manipulated to penetrate
to unusual depths.
The invention consists in certain novel combinations
and arrangements of parts, involving the driving motor
. . . and certain features of construction . . . .
And what were those novel combinations and arrangements of parts
10 involving the driving motor and certain features of
construction? Langworthy preferably “utilized a well known
standard type of electric motor 1 with its driving shaft 2
protruding therefrom, and the saw 3 is of the disk type, of
which various sizes may be used to adapt it to different
conditions” (Langworthy, p. 1, l. 71-76). “The saw is operated
from the motor and carried at the side of a tubular arm or
casing 4” (Langworthy, p. 1, l. 76-78). As shown in
Langworthy’s Figures 2 and 3, the motor shaft is disposed in
parallel with and above said saw shaft; and the transmission
20 means through which the motor shaft is connected to the saw
shaft so that the axis of the motor shaft is shifted from an
axis of said saw shaft by a distance which is greater than the
radius of said circular saw blade. It appears that during
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