Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1975-09-03
1977-01-04
Whitby, Edward G.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
53198R, 156268, 156527, 156530, 156580, 228 2, 264 68, B32B 3118, B32B 3120
Patent
active
040010643
ABSTRACT:
A manual strapping tool for joining overlapping portions of a thermoplastic strap includes a cantilevered spring having fixed and vibratory ends. The fixed end is rigidly anchored to a base member and the vibratory end supports one of a pair of jaws having opposing strap gripping surfaces. The other jaw is fixedly positioned on the base so that the strap gripping surfaces are normally in confronting engagement. An operating handle is pivotally mounted on the base member and swingable from a start position through a strap compressing position and a strap sealing position. In the start position, a lifter cam on the operating handle engages a lift arm causing the arm to raise the vibratory end of the cantilevered spring and to separate the strap gripping surfaces so that overlapping strap portions can be inserted therebetween. As the operating handle is swung from the start position to the strap compressing position, the lifter cam is disengaged from the lift arm releasing the vibratory end to compress the overlapping strap portions between the strap gripping surfaces. Further movement of the operating handle into the strap sealing position causes a triggering cam means on the operating handle to deflect and release the vibratory end so as to effect relative sliding frictional movement between the compressed overlapping strap portions and to melt the interface regions thereof. If desired, means for severing the strap end can also be provided on the vibratory end. Thereafter, the operating handle is swung back to the start position to release the strap from the tool.
REFERENCES:
patent: 3709758 (1973-01-01), Gilmore
patent: 3799835 (1974-03-01), Gilmore
Signode Corporation
Whitby Edward G.
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