Patent ID: 6371444
Filing Date: 2002-04-16
Classification: B29C,B29L,F16K

Abstract:
A method for the multi-shot, injection molding of at least two independent parts such that at least two of the parts are rotatable relative to each other and are not detachable from each other so as to form a valve which in one state has one part rotated relative to the other part such that both liquid and gas pass through both parts, and which in a second state is rotated relative to the other part such that both liquid and gas cannot pass through one of the two parts, the method comprising the steps of:first, injection molding one of the two parts in the form of a cylindrical tube which has a first passage running through the part perpendicular to the cylindrical tube, the one part also having a substantially cylindrically-shaped retaining rib inside the cylindrical tube; and second, injection molding the other part in the form of a cylinder inside the cylindrical tube of the first part without distorting either of the parts such as to have plastic molded around all exposed surfaces of the rib of the one part so as to rotatably retain the other part inside the one part, the other part also having a second passage running therethrough, the second passage being selectively aligned with the first passage on the one part upon rotation of the other part.