B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 65/06 (2006.01) B65B 13/32 (2006.01)
Patent
CA 2081145
A movable strap-engaging member is provided for being connected at a first pivot axis to a vibrator arm for accommodating pivot movement of the vibrator arm about the pivot axis while the movable strap-engaging member is pressing a first length of flexible thermoplastic strap against a second length such strap in an elongate strap-receiving path. The movable strap- engaging member is reciprocated generally transversely of the path to effect a friction-fusion weld of the strap lengths. The movable strap-engaging member has a configuration in which first and second centers of mass are spaced apart on a line that passes through the pivot axis and that is oriented generally perpendicular to the path. The product of the square of the distance along the line between the pivot axis and the mass of the first center of mass is substantially equal to the product of the square of the distance along the line between the pivot axis and the mass of the second center of mass.
Cheung Nelson
Figiel Janusz
Finlayson & Singlehurst
Signode Corporation
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