Appeal No. 2005-0901
Application No. 10/182,886
penetrating portion and the soil penetrating portion having a tip
which terminates on the constant amplitude without extending into
the cavity,
said helical or spiral member being a free-standing,
unsupported member.
21. A soil manipulating tool for manipulating soil, including:
a soil penetrating portion comprising a helical or spiral
member;
the helical or spiral member having an inner surface
defining a substantially cylindrical cavity in which plug of soil
can locate, the cavity extending substantially the entire length
of the soil penetrating portion, said helical or spiral member
being a free-standing, unsupported member; and
wherein the helical or spiral member has a pitch or
wavelength at a portion of the helical or spiral member which is
greater than the remainder of the pitch or wavelength of the
helical or spiral member so as to create a spring effect at the
portion of greater pitch or wavelength.
The examiner relies upon the following references in the
rejections of the appealed claims:
Bracewell 4,942,932 Jul. 24, 1990
Reinhardt 5,454,435 Oct. 3, 1995
Appellant's claimed invention is directed to a soil
manipulating tool comprising a helical or spiral member having an
inner surface that defines a substantially cylindrical cavity in
which a plug of soil can locate. Claim 1 recites that the soil
penetrating portion of the tool has a tip which terminates on the
constant amplitude of the helical configuration without extending
into the cavity, while claim 21 recites that the helical member
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