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.:

US 7255552 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 14, 2007

Filed:

Jul. 09, 2002
Applicants:

Bernard Michelon, Le Chesnay, FR;

Dominique Schwab, Versailles, FR;

Inventors:

Bernard Michelon, Le Chesnay, FR;

Dominique Schwab, Versailles, FR;

Assignee:

Erca Formseal, Les Ulis, FR;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 51/42 (2006.01);
U.S. Cl.
CPC ...
Abstract

Blanks () of thermoplastic material are heated, and a thermoforming step is performed in which the heated blanks are deformed plastically by stretching. Before the thermoforming step, a die-punching step is performed in which the peripheral regions of the blanks are deformed by die-punching while the material of the blanks is held captive on the outside. The installation includes heater means () for heating said blanks, thermoforming means (), and a die-punching tool () suitable for deforming the peripheral regions of the blanks before they are thermoformed.


Find Patent Forward Citations

Michelon, Bernard. (2007). Method and device for thermoforming of containers (U.S. Patent No. 7255552). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7255552

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