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US 9,352,459 B2Granted
Broken bolt extractor
OwnerMarvin Thomasinventor
Life of this patent
Estimating the term…
Abstract
A broken bolt extractor is disclosed which comprises a counter clockwise cutting tip section for drilling a bore into a broken bolt, the cutting tip section being tapered, an intermediate gripping section having a gripping edge for gripping a side of the bore drilled into the broken bolt, the intermediate gripping section being tapered, and a shaft section for attachment to a tool for rotating the extractor.
Claims20
A broken bolt extractor comprising:
- a counter clockwise cutting tip section for drilling a bore into a broken bolt, the cutting tip section being tapered;
- an intermediate gripping section having a gripping edge for gripping a side of the bore drilled into the broken bolt, the intermediate gripping section being tapered;
- and
- a shaft section for attachment to a tool for rotating the extractor.
1 more element
A broken bolt extractor comprising:
- a counter clockwise cutting tip section for drilling a bore into a broken bolt, the cutting tip section being tapered;
- an intermediate gripping section having a number of gripping edges disposed radially about the intermediate gripping section, the gripping edges for gripping a side of the bore drilled into the broken bolt, the intermediate gripping section being tapered;
- and
- a shaft section for attachment to a tool for rotating the extractor.
1 more element
A broken bolt extractor comprising:
- a counter clockwise cutting tip section for drilling a bore into a broken bolt, the cutting tip section being tapered;
- an intermediate gripping section having a number of gripping edges disposed radially about the intermediate gripping section, the gripping edges for gripping into a side of the bore drilled into the broken bolt, the intermediate gripping section being tapered and the grinding edges being straight;
- and
- a shaft section for attachment to a tool for rotating the extractor.
1 more element
Dependencies are inferred from the claim text.