B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/751
B29C 47/06 (2006.01) B29C 44/22 (2006.01) E06B 3/22 (2006.01) B29C 47/00 (2006.01) E06B 3/20 (2006.01)
Patent
CA 1159209
ABSTRACT OF THE DISCLOSURE The present invention provides an extrusion head for moldings to be used in the construction of windows, door and like frames, comprising: a first closed contour extrusion mouth defining an axis of the extrusion head, a second closed contour extrusion mouth coaxial therewith and located inter- nally to said first closed contour extrusion mouth, a first plastic material supply canalization in communication with and extending coaxially with respect to said first extrusion mouth, said first canalization having an inlet length, an intermediate length coaxial therewith and comprising two spaced apart channel branches arranged side by side with re- spect to each other and opening with one end thereof into said inlet length and opening with the other end thereof into said first extrusion mouth, a core portion between said two chan- nel branches separating laterally said channel branches from each other to leave free an intermediate body portion thereof therebetween, a second plastics material supply canalization in communication with said second extrusion mouth and having an input length substantially perpendicular to said first plastics material supply canalization and extending in a median plane thereof substantially parallel to said axis, an intermediate extension of said second canalization extending in a plane parallel with said median plane and comprising two spaced apart duct branches of substantially elongated configuration in cross section arranged side by side with respect to each other and opening with one extremity thereof into said input length and opening with the other extremity thereof into said second extrusion mouth, said two spaced apart duct branches extending through said intermediate body portion at a distance from said two spaced apart channel branches of the first canalization to avoid thereby inter- ference therewith, said two spaced apart duct branches having an elbow like bent in an intermediate zone thereof within said intermediate body portion thereby to direct said other extremity thereof coaxial with said second extrusion mouth.
354874
Calcagni Mario
Marks & Clerk
LandOfFree
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