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:
Jun. 07, 1977
Filed:
Oct. 28, 1975
Charles J Leonhart, Carol Stream, IL (US);
Nuarc Company, Inc., Chicago, IL (US);
Abstract
Apparatus for laminating pieces of sheet material comprising a base of rigid material having a flat upper surface formed with a plurality of spaced apart perforations distributed substantially uniformly over the surface, a support member having a flat upper surface supporting an underside of said base and having a plurality of concentric interconnected grooves defined and in communication with said perforations, means for developing a partial vacuum in said grooves for causing fluid flow through said perforations around one or more pieces of sheet material placed in contact with the upper surface of the base, a cover of flexible, fluid impervious transparent sheet material movable between an open position out of overlaying relation with said base and a closed or overlaying position covering said base along with any pieces of sheet material places on the base to be laminated together and means for sealing around the periphery of said base and said cover when said cover is in said overlaying position.