Appeal No. 2002-0602 Page 4
Application No. 09/596,749
a plow blade,
a rigid frame adapted to be secured to a vehicle on one side thereof and
to which said prow blade is assembled on the opposite side thereof,
a resilient material at least partially positioned between said plow blade
and said rigid frame,
said rigid frame including at least one vertically extending brace member
which forms a gap between the brace member and said plow blade,
said resilient material at least partially positioned in said gap.
Ciula discloses a snow plow having a blade which includes an inwardly curved,
polyethylene moldboard secured in a prestressed and arcuate relationship to a
structural frame. The frame includes inwardly curved, vertically extending, transversely
spaced brace members and a defined space of predetermined shape exists between
the moldboard and the braces for improved snow removal by the blade.
Middleton discloses a push-type snowplow having a forwardly mounted angled
blade reciprocated in a fore-and-aft direction by an oscillating motor drive for thrusting
snow aside, the oscillatory impulses of the blade easing the manual effort required for
snow removal. As shown in Figures 1-3, the blade 26 is comprised of a constrained
blade portion 26b and a pivotal blade portion 26a that can be swung back to form a
substantially symmetrical V-shape when desired for particular snowplow operations.
Middleton teaches (column 2, lines 52-65) that
FIG. 3 shows additional details of the structure including a
blade-adjustment silencing provision in the form of a resilient strip of material 70,
preferably plastic, of which polypropylene is a suitable example. Because the
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Last modified: November 3, 2007