Roller with compound angle flange
AssigneeVictaulic Company
InventorsLouis A. DiPierdomenico, Paulina A. Olesinska, Douglas R. Dole
Life of this patent
Estimating the term…
Abstract
An inner roller used for roll forming pipe elements has a flange extending radially from a body. The flange has a surface divided into annular surface portions. The surface portions have orientation angles measured relatively to the axis of rotation of the inner roller. The orientation angles of surface portions farther from the body have greater orientation angles than the surface portions nearer to the body to mitigate adverse frictional effects between the pipe element and the flange during roll forming.
Claims33
A roller for roll forming pipe elements, said roller comprising:
- a body rotatable about an axis;
- a flange extending circumferentially about said body and projecting radially outwardly therefrom relative to said axis, said flange comprising a surface having at least a first surface portion oriented angularly with respect to said axis at a first orientation angle, and a second surface portion oriented angularly with respect to said axis at a second orientation angle;
- wherein said body comprises an outer surface having at least one raised feature extending radially outwardly therefrom, a border between said first surface portion and said second surface portion positioned radially beyond said at least one raised feature.
A roller for roll forming pipe elements, said roller comprising:
- a substantially cylindrical body rotatable about an axis coaxial with a longitudinal axis thereof;
- a substantially circular flange extending circumferentially about said body and projecting radially outwardly therefrom relative to said axis, said flange comprising a surface having at least a first surface portion oriented angularly with respect to said axis at a first orientation angle, and a second surface portion oriented angularly with respect to said axis at a second orientation angle, said first surface portion being closer to said body than said second surface portion, said first orientation angle being less than said second orientation angle, said first and second surface portions being contiguous with one another;
- wherein
- said substantially cylindrical body comprises an outer surface having at least one raised feature extending radially outwardly therefrom, a border between said first surface portion and said second surface portion positioned radially beyond said at least one raised feature.
A roller for roll forming pipe elements, said roller comprising:
- a body rotatable about an axis;
- a flange extending circumferentially about said body and projecting radially outwardly therefrom relative to said axis, said flange comprising a curved surface having a center of curvature such that said curved surface retreats away from an end of one of said pipe elements engaging said flange.
Dependencies are inferred from the claim text.