Measuring and testing – Ductility or brittleness
Patent
1994-10-28
1995-10-31
Payer, Hewi-Siu
Measuring and testing
Ductility or brittleness
76 89, B21K 512
Patent
active
054619424
ABSTRACT:
A knife sharpener is disclosed having an elongated handle and a blade sharpening unit mounted to a platform at a distal end of the handle for rotation between first and second secured positions for selective orientation of a blade draw direction to accommodate use by either a right-handed or a left-handed individual. The blade sharpening unit includes a lock tab biased for receipt within a selected one of a pair of keyways formed in the platform, each keyway being associated with one of the first and second positions.
REFERENCES:
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patent: D183530 (1958-09-01), Lamb
patent: D315663 (1991-03-01), Dolbosco
patent: D323450 (1992-01-01), Shimizu
patent: 435553 (1880-09-01), Blood
patent: 668226 (1901-02-01), Shoemaker
patent: 1458938 (1923-06-01), Heyman
patent: 2446909 (1948-08-01), Davis
patent: 4112790 (1978-09-01), Marder
patent: 4498360 (1985-02-01), Milum
patent: 4751795 (1988-06-01), Jenne
Cutco Cutlery Corporation
Payer Hewi-Siu
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