Cassette device for reliable filament delivery

Details Cassette device for reliable filament delivery Cassette device for reliable filament delivery

2006-06-20

2006-06-20

Nguyen, John Q. (Department: 3654)

Winding, tensioning, or guiding

Wound storage package

Housing or outer peripheral support

C242S396100, C242S564400, C242S566000, C242S588600

Reexamination Certificate

active

07063285

ABSTRACT:
A cassette for use in delivering a continuous length of filament provides improved reliability by employing means for preventing tangling of the filament in the cassette. The cassette has a substantially closed housing defining a chamber in which a spool is rotatably mounted, and a path from the chamber to an exit orifice. A length of filament is wound around the spool and has a free strand positioned in the path. The filament strand is advanced along the path and delivered through the exit orifice by a means for advancing. Tangling is prevented by locking the spool during transport of the cassette to maintain a tight wind, and by guiding the filament strand along a snag-free path as it is withdrawn from the cassette. In the exemplary embodiments, a removable pin locks a flange or hub of the spool, and the filament strand is withdrawn through a tubular guide member.

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patent: 6027068 (2000-02-01), Lantsman
patent: 2001/0030383 (2001-10-01), Swanson et al.

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