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:
Sep. 12, 1989
Filed:
Feb. 03, 1988
Applicant:
Inventors:
Salvatore D Ferro, Sagamore Hills, OH (US);
Robert A Isaksen, Chardon, OH (US);
Robert J Stupi, Stow, OH (US);
Assignee:
The Excello Specialty Company, Cleveland, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264134 ; 264292 ; 2642974 ; 2642975 ; 264339 ; 427171 ;
Abstract
A method of forming a selectively expansible pocket or bulge in a thin plastic sheet to facilitate the use of the sheet as a surface protector or shield includes the step of applying oppositely directed forces to the sheet in a plurality of intermeshed closely spaced lines about a predetermined area in which it is desired to form a pocket. The forces are applied until stretching, thinning, and permanent deformation of the sheet takes place along the lines to produce a plurality of permanent corrugations to permit lateral deflection of the predetermined area.