Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

William R Weber, Iii

Peter J Zarembo

Norman L Koning

Donald P DeVale

Paul J Michels

Anthony Michael Belka

Mark R Crellin

Dennis L Sando

Philip E Edstrom

A marker insertion apparatus automatically removes a marker from a roll of marker material and applies the marker to an applicator. The markers mount to a backing sheet and are peeled from the sheet by passing over a peel bar. Jaws are positioned near the peel bar and configured for gripping an end marker. An applicator member inserts intermediate the jaws and has the end marker pressed onto the applicator and torn from the roll. In a first embodiment, the applicator is a paddle applicator for inserting markers between opposing pages, and in a second embodiment the applicator is a bayonet applicator for inserting markers into the spine of a book.

Method for inserting markers into books

A marker insertion apparatus automatically removes a marker from a roll of marker material and applies the marker to an applicator. The markers mount to a backing sheet and are peeled from the sheet by passing over a peel bar. Jaws are positioned near the peel bar and configured for gripping an end marker. An applicator member inserts intermediate the jaws and has the end marker pressed onto the applicator and torn from the roll. In a first embodiment, the applicator is a paddle applicator for inserting markers between opposing pages, and in a second embodiment the applicator is a bayonet: applicator for inserting markers into the spine of a book.

Apparatus and method for inserting markers into books

The present re/desensitizer is an apparatus for changing the status of a magnetic marker of an electronic article surveillance system. The markers are attached to or otherwise associated with an object to be protected, such has a book, CD, etc. The device can be set up as a resensitizer, a desensitizer, or with the inclusion of a mode switch, a combination re/desensitizer. The apparatus includes a magnetic field generator for generating a marker status changing magnetic field, detection means for detecting presence of an object, a control means for controlling the activation time of the magnetic field generator such that the marker status changing magnetic field is generated when an object is present. The magnetic field generator includes an offset core designed for continuous operation without excessive heat build up. The offset core is oriented such that the marker status changing magnetic field is substantially horizontal and adjacent to the mounting surface, thus reducing the complexity of movement of the hands and arms required when operating the device. The re/desensitizer also includes a control circuit which controls power to the magnetic field generator such that the marker status changing magnetic field is produced only when an object containing a marker is present. The control circuit also controls the duty cycle of the device by controlling the amount of time that the device is activated and by controlling the amount of time between successive activations.

Apparatus for changing the status of magnetic markers in an electronic

Growing community of inventors

Vadnais Heights, MN, United States of America

William R Weber, Iii