Metal working – Method of mechanical manufacture – Disassembling
Reexamination Certificate
2006-11-28
2006-11-28
Bryant, David P. (Department: 3726)
Metal working
Method of mechanical manufacture
Disassembling
C029S426400, C029S402080, C081S053200, C254S018000
Reexamination Certificate
active
07140087
ABSTRACT:
Apparatus and methods for extraction of nails, screws and other such fasteners from wood or other host materials are disclosed. One embodiment of the apparatus includes a shank adapted for application at a rotational drive source, a two-part engaging member at one end of the shank having a cavity extending thereinto for receiving therein a fastener to be extracted and openable to release the fastener after extraction. A cutting component is defined at a bottom edge of the engaging member adjacent to an opening to the cavity for cleanly removing host material from around the fastener. A gripping surface formation comprising a spiraling striation is formed at a surface of the cavity for threadably engaging the fastener to be removed.
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Nail Spinner; Vermont American, Product Package, 2001 (see related below).
Hollow Screw Extractor: 2001 Woodworking Tools & supplies Catalog; p. 31.
Afzali Sarang
Bryant David P.
Burdick Harold A.
ReConnX, Inc.
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