Appeal No. 2004-0072 Page 6
Application No. 09/904,341
supporting device is carried at the rearward end portion of a snowmobile and upon
being released from an inoperative position self positions itself to elevate and support in
elevated position the rearward end portion of the snowmobile raising the underlying
track arrangement thereof above the supporting ground surface.
After the scope and content of the prior art are determined, the differences
between the prior art and the claims at issue are to be ascertained. Graham v. John
Deere Co., 383 U.S. 1, 17-18, 148 USPQ 459, 467 (1966).
Based on our analysis and review of Knutson and claim 1, it is our opinion that
the differences are as follows: (1) a pre-existing bracket attached to a side of the trailer;
(2) the bracket having an opening whose length extends parallel to the longitudinal
direction of the trailer and whose width is transverse thereto; (3) a cylindrical pipe
flattened at one end thereof such that the flattened end is adapted to be received in the
bracket; (4) the diameter of the cylindrical portion of the pipe exceeding the width of the
opening in the bracket; and (5) the pipe when received in the bracket and disposed in a
vertical relationship being adapted to lift the trailer slightly above the ground and the
bottom of the bracket being in contact with the cylindrical portion of the pipe below the
flattened end thereof.
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