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US 4,034,637 AGranted
Double rotor shear
OwnerDaniel Olleryinventor
Life of this patent
Estimating the term…
Abstract
A double-rotor shear used to cut materials in strip form has opposing blades arranged to rotate in opposite directions with respect to two parallel axes. The cutting edge of each of the blades is rectilinear and situated in a plane passing through the corresponding axis of rotation at an angle with respect to the axis. At all times during operation the two cutting edges are disposed symmetrically with respect to the plane passing through a line equidistant from the two axes of rotation, which plane is normal to the plane defined by these axes.
Claims2
A shear, particularly for materials in strips, the shear comprising:
- at least one pair of blades operatively arranged to rotate in opposite directions with respect to two parallel axes of rotation, the cutting edge of each respective one of said blades being rectilinear and situated in a plane passing through the corresponding axis of rotation, being inclined at an angle with respect to said corresponding axis and being defined by the intersection of two plane faces of the corresponding blade, and wherein the two cutting edges of each said pair of blades, when operating, are at all times disposed symmetrically with respect to a given plane which passes through a line equidistant from said two axes of rotation, said given plane being normal to a plane defined by these axes.
Dependencies are inferred from the claim text.