Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1979-12-11
1982-02-16
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156137, 156138, 156139, 156140, 474251, 474263, B29H 722, F16G 128
Patent
active
043157882
ABSTRACT:
A method of producing endless drive belts of natural or synthetic rubber with thread-shaped embedded strength carriers which preferably extend in the longitudinal direction. This method relates especially to multiple V-belts and similar belts having longitudinal ribs extending continuously over the inner periphery or circumference thereof. A raw belt member is built up in upside-down sequence of layering, and is placed into an outer form or mold, in which it is formed-out and vulcanized. The belts are then turned or folded or rolled over into the use condition thereof. The raw belt member, which is produced oversize with respect to the outer form or mold, is retracted, pulled-in, or drawn-in to an outer diameter corresponding to the smallest inner diameter of the outer form, and is expanded within the outer form to, or essentially to, the original outer diameter thereof. The raw belt member may be subjected to a pressure gradient, drop or differential effective from the outside toward the inside for retracting, pulling-in or drawing-in the diameter thereof. The raw belt member has strength carriers of synthetic polymers which shrink in the heat, and may be subjected to an elevated temperature for retracting, pulling-in or drawing-in the diameter thereof.
REFERENCES:
patent: 2139840 (1938-12-01), McKone
patent: 2573642 (1951-10-01), Hurry
patent: 3078205 (1963-02-01), Sauer et al.
patent: 3090716 (1963-05-01), Stevens
patent: 3930418 (1976-01-01), Dutton
Continental Gummi-Werke Aktiengesellschaft
Weston Caleb
LandOfFree
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