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. 29, 1990
Filed:
Jul. 11, 1988
Applicant:
Inventor:
Kenneth V Pepper, Plymouth, WI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425325 ; 72137 ; 198624 ; 2642094 ; 264281 ; 264295 ; 264D / ; 425335 ; 425392 ;
Abstract
An apparatus for producing a curved tube, the apparatus comprising an extruder for extruding a tube having a wall including a first portion having a thickness, and a second portion diametrically opposite the first portion and having a thickness less than the thickness of the first portion, and rollers for forming the tube into a curve with the first portion being radially outward and with the second portion being radially inward so that the thickness of the first portion becomes substantially equal to the thickness of the second portion.