Patent ID: 7300074
Filing Date: 2007-11-27
Classification: B65G,F16L

Abstract:
1. An elbow fitting for use in effecting directional changes from an inlet pipe to an outlet pipe in a pneumatic product conveying system, comprising: a circular inlet portion connectable to said inlet pipe to receive a flow of product particles therefrom; an inlet transition portion connected to said inlet portion and expanding from a generally circular cross-section into an expanded non-circular cross-section having an outer side width dimension that is greater than a diameter dimension of said inlet portion; a curved expanded portion connected to said inlet transition portion and carrying said expanded non-circular cross-section through an angular deflection, said curved expanded portion expanding in depth into a radially outward side of said elbow fitting from said inlet transition portion through a step in said radially outward side of said elbow fitting, said curved expanded portion maintaining a radially inward side of said elbow fitting in a linear relationship with respect to said inlet transition portion and said inlet pipe; an outlet transitional portion connected to said curved expanded portion to reduce said expanded non-circular cross-section to said generally circular cross-section; and an outlet portion having said circular cross-section and being connected to said outlet transitional portion, said outlet portion also being connectable to said outlet pipe to convey said flow of product particles into said outlet pipe.