Appeal No. 2004-1194 Page 4
Application No. 09/580,880
23. A roller adapted to rotate a thin disk, the roller comprising:
a groove having at least two surfaces adapted to contact an edge of the
thin disk; and
a plurality of holes formed in at least one of the two surfaces, the holes
being adapted to reduce slippage of the thin disk relative to the roller.
Bobkowicz's invention relates to a novel aerodynamic method and apparatus for
spinning of composite yarn. As shown in the embodiment of Figure 1, a strand 20 upon
exiting from an air vortex chamber 10, in which the strand 20 has acquired a light twist,
is forwarded to and through a groove 26 of a rotatable grooved consolidating roll 25.
The groove 26 provided circumferentially on the roll 25 is generally V-shaped and at the
bottom thereof there may be holes or slots 27 leading inside the roll 25 where an air
suction device (not shown) may be mounted. The strand 20 is consolidated within the
groove 26 of rotating roll 25 and the air suction from inside, when provided, helps to
produce a stronger hold against the bottom of the groove during consolidation. As
shown in the embodiment of Figure 2, twisted or pre-twisted fibers are fed within a
V-shaped groove 46 of a rotating consolidating roll 45. Due to a very fast axial rotation
of this roll 45 (above 300 feet per minute) it is impractical to use suction from within to
hold the fibers against the groove and instead of this a channel 47 is formed over and
above each face of the V-groove 46. At the top of these channels, holes or slots 48 are
provided leading towards suction imparting devices 49, 50.
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: November 3, 2007