Multifunctional whetstone

Details Multifunctional whetstone Multifunctional whetstone

2006-04-04

2006-04-04

Wilson, Lee D. (Department: 3723)

Abrading

Abrading process

Combined abrading

C451S056000, C451S063000, C451S119000, C451S540000

Reexamination Certificate

active

07021997

ABSTRACT:
Provided is a multifunctional whetstone comprising a handle comprising a rear cutter, top slits of different width, and a bottom magnet; a head comprising an open mouth including a curved recess for gripping a sheet of paper and a bottom opening with two concealed abrasive blades anchored in both sides; and a yoke-shaped guide fastened at the cavity and both eyes and comprising two wings. In one operation blunt cutting edges of a blade of a knife are placed in the opening and are adapted to rub against either abrasive blade to-and-fro repeatedly. In another operation a piece of glass is cut along a predetermined line by manipulating the cutter, a portion of the glass is inserted into one conformed slit with the predetermined line aligned with an opening of the slit, and the handle is adapted to pivot to break the glass into two parts.

REFERENCES:
patent: 5800578 (1998-09-01), Johnson
patent: 6406505 (2002-06-01), Oh et al.
patent: 6626984 (2003-09-01), Taylor
patent: 6766558 (2004-07-01), Matsumoto et al.

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