A - Human Necessities – 44 – B
Patent
A - Human Necessities
44
B
18/114, 154/29.0
A44B 19/60 (2006.01) A44B 19/42 (2006.01) B29C 65/08 (2006.01) B29D 5/00 (2006.01)
Patent
CA 1303311
ABSTRACT OF THE DISCLOSURE An auxiliary film is applied or fused to a slide fastener chain having a pair of intermeshing rows of cou- pling elements with an element-free space defined therein. The slide fastener chain is fed by a chain feeder along a feed path. The device for applying the auxiliary film includes an ultrasonic horn disposed above the feed path, a holder disposed below the feed path and movable toward and away from the ultrasonic horn, a stopper disposed in the holder and movable into the element-free space of the slide fastener chain, an anvil disposed in the holder and movable toward and away from the ultrasonic horn, and a feed roller assembly for supplying an elongate auxiliary film onto the anvil. A sensor roller is mounted on the holder for pressed engagement with the elongate auxiliary film, the sensor roller having a plurality of circumferentially equally spaced controlling elements. A controlling element sensor is disposed near the sensor roller for sensing the controlling elements one at a time and issuing a command signal to keep the chain feeder energized insofar as the controlling element sensor successively senses the control- ling elements.
573687
Gowling Lafleur Henderson Llp
Ykk Corporation
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