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:
Jan. 19, 1988
Filed:
Apr. 15, 1986
Applicant:
Inventor:
Bernd Schenk, D-7517 Waldbronn, DE;
Assignee:
Other;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264545 ; 264553 ; 4253261 ; 425451 ; 425454 ; 425504 ;
Abstract
A method of operating a vacuum-forming machine and the machine which operates by this method, in which once the mold halves are closed on the foil webs for vacuum drawing and fusion of the vacuum drawn container halves come together to produce a hollow article, the mold halves move at the velocity of the web to a lower position spaced from the upper position by a distance sufficient to permit cooling of the molded articles. A spring or other force-storing element is stressed during this movement so that when the mold opens at the lower position, it is driven upwardly at a substantially higher velocity to return to the starting position.