Cutting by use of rotating axially moving tool – Tool-support with means to move tool relative to tool-support – To move radially
Reexamination Certificate
2002-06-04
2004-12-28
Wellington, A. L. (Department: 3722)
Cutting by use of rotating axially moving tool
Tool-support with means to move tool relative to tool-support
To move radially
C409S178000, C144S136950
Reexamination Certificate
active
06835030
ABSTRACT:
FIELD OF THE INVENTION
The present invention is related to power tools. More particularly, the present invention is related to power tool accessories such as attachments for power hand tools.
BACKGROUND OF THE INVENTION
Power hand tools such as drills, rotary cutting tools, and the like are known in the art. These tools are widely used by tradesmen, hobbyists, and others in a wide variety of applications. Use in some of these applications may be aided by an attachment to the power tool. For example, a depth adjuster accessory may be used with a rotary cutting tool to cut an opening in a surface to a limited depth. A depth adjuster may be used when penetrating a drywall surface, for instance, so the wall is only penetrated to a limited depth to avoid interfering with objects behind the drywall. By way of additional example, other power tool attachments include a vacuum adaptor, a template guide, and a circle cutter.
Examples of such accessories as are known in the art have problems associated with them. One problem, for example, is that attachment and removal of the accessory from the power tool often requires tools such as a wrench or screwdriver. This can be disadvantageous in that time, effort, and cost are associated with obtaining, carrying, and using the wrench or screwdriver. Another example of a problem with some known accessories is that they do not allow for attachment of a second accessory. That is, some accessories do not provide for use in combination—once a first accessory is attached to the power tool no additional accessories can be attached.
SUMMARY OF THE INVENTION
A power tool accessory system comprises a first accessory for connection to the power tool and for attaching a second accessory to the first. The first accessory has a first connector proximate a top perimeter for connecting the accessory to the power tool, and a second connector proximate to a generally circular bottom perimeter of the accessory for attaching a second accessory to the first. Preferably, both the first and second connectors are manually operable so that attachments may be made without the use of tools.
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“#960-01 Advantage Circle Cutter Attachment” Dremel Co. advertisment for a Circle Cutter Dremel Tool attachment, believed published circa 2000 on the World Wide Wide at: http:www.dremel.com/productsdisplay/att_template.asp?SKU=960-01&Color=99CCFF.*
“#9000-04 Advantage Rotary Saw Kitt” Dremel Co. advertisement for a Dremel Tool with Depth Guide, believed published circa 2000 on the World Wide Web at: http:www.dremel.com/productsdisplay/att_template2.asp?SKU=9000-04&Color=99CCFF.*
“Rotozip Dust Extractor Attachment,” Sears advertisement for a Rotozip Dust Extractor Attachment for Rotozip Spiral Saw tools, believed published circa 2001 on the World Wide Web at: http://www.sears.com/sr/product/summary/summary.jsp?BV_SessionID=@@@@@07.
Gaynes Stephen J.
Pozgay David
Riley Jonathan
Credo Technology Corporation
Greer Burns & Crain Ltd.
Ross Dana
Wellington A. L.
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