Philip Morris Inc.

Frederick Manufacturing Company

Roy E Van Derlinden

Barry Scott Smith

Michael J Mullins

John H Francis

Donald L Irvin

An apparatus for the detection of surface flaws in material having a surface which is partially reflective includes at least one light source arranged to direct incident light on a surface of an at least partially reflective material, and a light detector disposed above the surface of the material. The light detector and the at least one light source are arranged relative to each other such that, in the absence of a surface flaw in the material, substantially no light from the at least one light source is detected by the light detector and, in the presence of a surface flaw in the material, light from the at least one light source is reflected off of the flaw and into the detector.

High speed flaw detecting system for reflective material

A variable speed drive varies the speed ratio between an input shaft and an output shaft. The input shaft is coupled to the output shaft through a cone which is connected to the input shaft by a rigid link and to the output shaft by a constant velocity joint. The cone rolls on a curvilinear surface to transmit motion from the input shaft to the output shaft. In order to vary the speed ratio, the position of the cone on the curvilinear surface is changed.

Growing community of inventors

Frederick, MD, United States of America

Roy E Van Derlinden