Abstract: This invention relates to calendering systems. Such structures of this type, generally, employ the use of hard and soft nips to provide excellent smoothness without gloss mottle.

Abstract: This invention relates to calendering systems. Such structures of this type, generally, employ the use of hard and soft nips acting on a heated roll to provide excellent smoothness without gloss mottle.

Abstract: An air powered rocket sled game which includes a body member having at least one and preferably two separate elongated air passageways, the ends of each passageway terminating in close proximity to form a substantial loop pattern. A pair of continuous loop intersecting tracks are provided, one along the upper surface of each passageway. The tracks are grooved and are in communication with the interior of the passageways by a plurality of inclined bores for slidably moving rocket sled projectiles along each track in a single direction. The body member includes a centrifugal blower having separate isolated outlets for each passageway and a valve for each passageway to selectively provide a flow of air along the passageway in a direction opposite to the direction of travel of the projectiles. Also included is a method of manufacturing the inclined bores to provide communication between the grooved tracks and the interior air passageways.

Abstract: An air-powered rocket sled game which includes a base having a pair of closed intersecting grooved tracks of substantially equal length in the upper surface thereof and a pair of air ducts in the interior of said base, each duct being in open communication with one of the grooved tracks through a plurality of spaced bores; a pair of projectiles adapted for slidably fitting in the grooved tracks and individually controlled means for introducing a continuous flow of compressed air into each air duct to thereby force the projectiles along the tracks.