Abstract: Retroreflective sheeting is taught which incorporates markings that are distinctly visible when the sheeting is viewed at an angle under retroreflective viewing conditions, thereby allowing a viewer to determine the identity of the sheeting. The sheeting comprises a monolayer of microsphere-lenses; a spacing layer coated on the microsphere-lenses and contoured so as to generally follow the curved back surfaces of the microsphere-lenses; a specularly reflective layer coated over the spacing layer; and a transparent image layer disposed in an imagewise pattern between the spacing layer and specularly reflective layer, with the thickness of the image layer being greater in the valleys of the spacing layer between the microsphere-lenses than on the curved surfaces directly in back of the microsphere-lenses.

Abstract: A display device having a plurality of base panels. Each base panel has an arm projecting perpendicular to the plane of the base panel. The arm has a flat portion parallel to the plane of the base panel at an upper end of the arm, and slant area at a lower end of the arm. A pin is disposed at the end of the arm to suspend freely a reflecting plate, which moves about by breeze to provide an attractive shimmering effect.

Abstract: Each of a set of three flexible number plates for racing motor-bicycles consists of a base material, such as polyvinyl chloride of approximately 20 mil thickness, with a first color applied or sheet laminated to one side of the base material and a second color applied or sheet laminated to the opposite side of the base material. Imprinting or identifying logos are applied to the color material on both sides of the plate and then an overlaminate material, such as 5 mil clear plastic, is applied over both sides of the base, color material and imprinting. Then the actual identifying numbers are applied to the overlaminate on both sides of the plate.

Abstract: Retroreflective sheeting having improved resistance to delamination is prepared by imparting a grid pattern to a monolayer of glass spheres having a light reflecting layer thereon, applying a sphere binder layer over the grid pattern imposed on the monolayer of glass spheres so as to adhere to the reflective layer on the monolayer of glass spheres, and pressure consolidating the resulting composite against a clear, protective overlay film, wherein the overlay film bonds to the sphere binder layer in the grooves formed by the grid pattern.