Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1988-05-19
1989-05-23
Wityshyn, Michael
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156159, 1563042, 1563046, 156503, 156507, 604905, B29C 6520, A61M 500
Patent
active
048327735
ABSTRACT:
Thermoplastic tubes are welded together in a dry condition with the tubes being open and maintained in their undistorted condition during the welding step. In an alternative technique a branch tube is welded to a main tube by placing the tubes in a non-parallel orientation in a holding device. A wafer cuts completely through one tube to form two tube sections. The wafer also cuts a notch from the other tube. One of the tube sections is shifted to become aligned with the notched other tube and welded thereto. A further technique includes placing at least one tube in a holding device which has a false floor for pressing against an area of the tube while the tube is being flattened at two spaced locations on opposite sides of the area. When the false floor is moved away from the tube a partial vacuum results. An air pocket is formed when the tube is severed by a wafer by air flowing into the cut tube.
REFERENCES:
patent: 4369779 (1983-01-01), Spencer
patent: 4507119 (1985-03-01), Spencer
patent: 4516971 (1985-05-01), Spencer
patent: 4737214 (1988-04-01), Leurink et al.
patent: 4753697 (1988-06-01), Shaposka et al.
Shaposka John B.
Spencer Dudley W. C.
Denco Inc.
Wityshyn Michael
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