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. 03, 1977
Filed:
Sep. 22, 1975
Applicant:
Inventor:
Alfred Schlieckmann, Vaterstetten, DT;
Assignee:
The Upjohn Company, Kalamazoo, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
425115 ; 264 462 ; 425224 ; 425329 ; 425371 ; 425468 ; 425471 ; 4258 / ;
Abstract
The invention relates to a method and an apparatus for the continuous manufacture of longitudinally slit foam pipes using an internal core and two outer mold portions, externally and spacedly surrounding the core, whereby the two outer mold portions are displaced in movement-conforming manner along a path with the formation of a continuous, annular channel open towards a core support and whereby further a sheet is curved in tubular or U-shaped manner, and just before entering the annular channel is supplied with a foam base material which is completely foamed in the annular channel, whereby the foamed hollow profile is formed.