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US 4,228,937 AGranted
Cleaving apparatus
AssigneeRCA Corporation
InventorAnthony J. Tocci
Life of this patent
Estimating the term…
Abstract
An apparatus for accurately and precisely cleaving crystalline material comprising a platform having an edge over which a workpiece projects, and a rotatable member having a scribing point and protrusion extending substantially radially therefrom. Upon rotation of the rotatable member, the arcs described by the scribing point and protrusion are substantially parallel to the platform edge, and intersect that portion of the workpiece which projects over the platform edge.
Claims5
An apparatus for cleaving crystalline material, comprising:
- (a) a platform for supporting the crystalline material thereon, having a substantially straight edge over which the crystalline material projects;
- and
- (b) a rotatable member having a scribing point and protrusion extending substantially radially therefrom and located on a plane which is perpendicular to the axis of rotation of the rotatable member, such that upon axial rotation of the rotatable member, the arcs described by the scribing point and protrusion are substantially parallel to the platform edge, and intersect the crystalline material which projects over the edge such that a bending moment is created in that portion of the crystalline material which projects over the platform edge.
Dependencies are inferred from the claim text.