The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 1993
Filed:
May. 07, 1992
Applicant:
Inventor:
John N Garner, Kingston, CA;
Assignee:
Northern Telecom Limited, Montreal, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425113 ; 264260 ; 4251311 ; 4251331 ;
Abstract
Dual extrusion apparatus with a horizontal extruder and a vertical extruder connected to an extruder head and in which the weight of the vertical extruder is carried by a frame. The vertical material extruder is permitted to expand upwardly under temperature variations so as to minimize stress. Also, the extruder head and the vertical extruder are movable together horizontally to comply with temperature induced expansion and contraction.