Abrading – Accessory – Guard or housing
Reexamination Certificate
1999-11-05
2001-04-03
Morgan, Eileen P. (Department: 3723)
Abrading
Accessory
Guard or housing
C451S455000, C451S457000
Reexamination Certificate
active
06210261
ABSTRACT:
Statement as to Rights to inventions made under Federally sponsored research and development: Not applicable.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a protective shield for, but not restricted to, small, hand held, motor driven tools, such as are used for grinding, polishing and cutting.
2. Background Information
Small electric motor driven tools, typically hand held or bench mounted, such as are used for grinding, polishing, and cutting are popular and widely used. These tools are typically light weight, 3600 rpm and higher, and convenient to use. However, at typical speeds of 3,600 rpm and higher, some of the items mounted on the tools, such as abrasive discs tend to shatter. Also, wire brushes tend to throw wires. Also, users of such tools sometimes injure fingers when they inadvertently rest them against a rotating chuck of such tools. Safety is a problem, because there are not currently available an adequate, light weight, and convenient safety shields for such tools.
As will be seen from the subsequent description of the preferred embodiment of the present invention, these, and other shortcomings of the prior art are overcome.
SUMMARY OF THE INVENTION
The present invention, a tool protective shield, in the preferred embodiment comprises a clip with a transparant shield. The clip comprises a clearance and vent ribs. The shield further comprises a vacuum tube. The tool protective shield is attachable to a tool or to an adapter from the tool to the tool safety shield. The shield can be manufacturer either as a one piece unit or as a multi-piece unit.
REFERENCES:
patent: 1021065 (1912-03-01), Neil
patent: 2429356 (1947-10-01), Hicks
patent: 2875642 (1959-03-01), Colburn
patent: 3019751 (1962-02-01), Fichera
patent: 3126021 (1964-03-01), May
patent: 4200417 (1980-04-01), Hager et al.
patent: 4440045 (1984-04-01), Aksamit
patent: 5220753 (1993-06-01), Whitman
Johnson James E.
Morgan Eileen P.
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