Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

James E Peterson

Dwight G Baldwin

Ernesto M Rodriquez, Jr

Low profile overhead projector having a foldable post

An overhead projector includes an opening in its bottom to accommodate a pivoting mirror. This opening is closed by two doors which pivot to support the projector in use. The projector includes latches which retain the doors in the closed position and gravity cams which retain the doors in the open position, but which automatically release the doors when the projector is placed on its side.

Overhead projector support leg mechanism

An adjustment mechanism for use with an overhead projector having a post extending upwardly to support a projection head attached to the attachment mechanism incudes a wear pad partially surrounding the post, a friction pad disposed opposite the wear pad with respect to the post and a spring for urging the friction pad into the post.

Growing community of inventors

Austin, TX, United States of America

James E Peterson