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:
Dec. 08, 1992
Filed:
Oct. 10, 1991
William P Tobin, Salem, NH (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
A novel laminar sheet structure having at least two sheets of different stiffnesses in releasably adhering engagement with each other, the sheet of the lesser stiffness having a marginal portion extending beyond on adjacent margin of the sheet with the greater stiffness. Also disclosed is an apparatus for delaminating the laminar sheet structure having at least one rotatably mounted roller with an axial slot in its peripheral surface for receiving the marginal portion of the sheet of lesser stiffness so that the sheet may be wound upon the roller while the sheet of greater stiffness is separated therefrom, and a method of delaminating the structure by the apparatus.