Appeal No. 2000-1120
Application 09/095,205
a plunger mounted within said mixing chamber so as to be
initially disposed adjacent said first end thereof, said plunger
being slidably movable along said central axis toward said second
end of said mixing chamber;
a mixing member rotatably mounted in said mixing chamber,
said mixing member including:
a rotatable shaft, said rotatable shaft extending along
said central axis; and
at least a first blade mounted on and radially
extending from said rotatable shaft, rotation of said shaft
causing said blade to rotate about said central axis within the
interior of said mixing chamber, and
drive means for causing rotation of said mixing member,
said drive means including:
a handle located to the exterior of said syringe
body at said second end of said mixing chamber, said handle being
axially movable relative to said mixing chamber, the movement of
said handle being parallel to and in-line with said central axis;
and
a gear mechanism for connecting said handle to said mixing
member, said gear mechanism comprising a barley twist mechanism
having a threaded rod, a first end of said rod being connected to
said handle, said gear mechanism further having a rotatable drive
bush, said drive bush being coupled to said mixing member
rotatable shaft for rotation therewith, said drive bush being
engaged by said threaded rod whereby axial movement of said
handle will cause rotation of said drive thereby imparting
rotational force to said mixing member.
16. The apparatus of claim 15 further comprising:
means for establishing air tight seals between said lid
assembly and said mixing member and between said lid assembly and
said syringe body.
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Last modified: November 3, 2007