Metal working – Method of mechanical manufacture – With testing or indicating
Patent
1990-07-17
1992-01-07
Watts, Douglas D.
Metal working
Method of mechanical manufacture
With testing or indicating
152565, 29558, 51161, 51281R, B23P 1700
Patent
active
050778811
ABSTRACT:
A tape scraper is made of a block of material having first and second planar internal surfaces disposed at an angle relative to each other. An external surface of the block is ground by a grindstone, while the block is rotated about an axis. The axis is located in a plane bisecting the angle between the planar internal surfaces. Grinding is continued until a groove between the two planar surfaces is opened to form facing knife edges. Rigid alignment of the knife edges is maintained by portions of the material which remain after grinding that connect the separated portions together.
REFERENCES:
patent: 1949515 (1934-03-01), Norton
patent: 3602940 (1971-09-01), Barbeau
patent: 4839959 (1989-06-01), Mersing
patent: 4897907 (1990-02-01), Kopiel et al.
Nakamichi Corporation
Watts Douglas D.
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