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:
Apr. 22, 1986
Filed:
Nov. 19, 1984
Robert B Wilson, Holyoke, MA (US);
Dennison National Company, Holyoke, MA (US);
Abstract
A ring binder cover is composed of a pair of thermoplastic sheets superimposed in edge-to-edge relation with stiffener insert panels disposed therebetween. The inner edges of the insert panels are spaced apart a distance which is approximately the width of the back panel and hinged portions of the binder. The peripheral edge portions of the two thermoplastic sheets are sealed together and provide a sealed envelope for the stiffener inserts which are disposed therebetween and define semi-rigid back and front cover panels of the binder. A discrete, semi-rigid spine is affixed to the outer surface of the cover in the area between the inner edges of the inserts. The spine has a width less than the distance between the inserts and together define hinges for the binder covers. The spine is composed of a stiffening insert panel encased within a thermoplastic sheath material and a ring mechanism is affixed on the inner surface of the cover opposite the spine.