Patent ID: 6832631
Filing Date: 2004-12-21
Classification: C03B,F15B,F16K,Y10T

Abstract:
A proportional valve assembly for supplying compressed air on a glassware molding machine, the assembly comprising a tubular body having an axis and inlet and outlet ports for an operating fluid; at least one movable slide member housed in said tubular body; a linear actuator for exerting control action on said slide member; and reaction means for exerting on the slide member an opposing action in opposition to the control action, and for moving said slide member along said axis; characterized by also comprising relatively moving means interposed between said reaction means and said slide member, andsaid relatively moving means comprise self-leveling articulated joint means with spherical heads; and said articulated joint means comprise a first and a second spherical-headed articulated joint, said spherical heads are connected integrally to each other, and further characterized in that said relatively moving means comprise a push member separated from said slide member; and coupling means for connecting the push member to said slide member; further characterized in that said first and said second spherical-headed articulated joint comprise respective spherical heads having respective different radii of curvature.