Dresser Industries, Inc.

Donald C Baldwin

Robert E Loy

Paul E Willis

A road planer machine having a housing containing a rotating planer drum and having access doors in the housing for maintenance and inspection of the cutting equipment which includes detectors for determining when the access doors are not in their normally closed positions and for disabling the propulsion system of the planer machine as well as the drum rotating system so that the machine can neither move nor the drum rotate if any of the access closure doors are not in their normally closed position.

Growing community of inventors

Libertyville, IL, United States of America

Donald C Baldwin