National Blank Book Company, Inc.

Dennison National Company

Robert B Wilson

Raymond T Cassidy

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.

Ring binder cover

Filing unit for the storage of recording tape cassettes in which one or more loose leaf pages or sheets are insertable in a loose leaf ring binder. Each sheet has a plurality of retainer clips affixed thereto. The clips are formed from a strip of resilient material with a base portion and upwardly extending post portions spaced apart a distance approximately equal to the reel spacing of the cassettes to be held thereby. Each post extends generally perpendicularly from the base and includes an upwardly opening slot defining two spring finger portions, each having an outwardly extending lug at its upper edge to snugly engage the wall within the reel opening of the cassette.

Tape cassette filing unit

A binder for filing microfiche cards together with a portable card viewer, said binder having a pair of hinged cover panels connected by a U-shaped assembly and a looseleaf binding mechanism mounted between the sides of said assembly above the back panel thereof thereby forming a compartment between said binding mechanism and said back panel. Said back panel being provided with an opening for receiving the barrel of the card viewer when said viewer is held against said back panel of said assembly by a releasable retainer flap.

Growing community of inventors

Holyoke, MA, United States of America

Robert B Wilson