Patent · US Expired

Lap cutting blades

US4161167A · kind A · utility

3Cited by

2References

12Claims

0Family size

Assignee

Wacker-Chemitronic Gesellschaft fur Elektronik Grundstoffe mbH · DE

Inventors

Dieter Regler · Burghausen, DE
Alfred Moritz · Burghausen, DE

Key dates

Filing date	Apr 19, 1978
Grant date	Jul 17, 1979
Priority date	—
Expiry date	Apr 19, 1998

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB28D5/042
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Lap cutting blades are provided which are useable for the multiple lap cung of solid materials, such as semiconductorrods. The blades each have a generally rectilinear cutting edge, the length of which is 1-75 times the thickness of the blade, as measured at its cutting edge. The cutting edge of each blade has rectilinear edge portions separated by a plurality of notched edge portions which, in turn, define a plurality of recesses which encompass 5 to 25% of the total blade length and 5 to 40% of the effective operating length of the blade. The notched blade edge portions define a notch angle of between 20 and 80 degrees, as measured between the tangent thereto at its point of intersection with the rectilinear cutting edge portion and a line perpendicular to the rectilinear cutting edge portion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.