Title of Invention	METHOD FOR UNSCREWING HREADED FASTENERS AND A CYLINDRICAL BIT FOR REMOVING DAMAGED SCREWS.
Abstract	TITLE: BIT FOR REMOVING DAMAGED SCREWS This bit is installed in a counter-clockwise-rotating drill. The bit has an axis and a tip end with a point of about 140°. There are multiple scraping surfaces on the bit, each facing counter-clockwise into a longitudinal recess in the tip end. Each scraping surface has a scraping edge at an angle of about 70° to the axis. Behind the scraping surfaces the outer surface of the tip end curves down in a relief surface to a rearward edge adjacent another of the longitudinal recess.

Title of Invention

METHOD FOR UNSCREWING HREADED FASTENERS AND A CYLINDRICAL BIT FOR REMOVING DAMAGED SCREWS.

Abstract

TITLE: BIT FOR REMOVING DAMAGED SCREWS This bit is installed in a counter-clockwise-rotating drill. The bit has an axis and a tip end with a point of about 140°. There are multiple scraping surfaces on the bit, each facing counter-clockwise into a longitudinal recess in the tip end. Each scraping surface has a scraping edge at an angle of about 70° to the axis. Behind the scraping surfaces the outer surface of the tip end curves down in a relief surface to a rearward edge adjacent another of the longitudinal recess.

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Patent Number

219950

Indian Patent Application Number

IN/PCT/2002/1063/KOL

PG Journal Number

20/2008

Publication Date

16-May-2008

Grant Date

14-May-2008

Date of Filing

19-Aug-2002

Name of Patentee

BERGAMO PETER J

Applicant Address

85 HARRISON DRIVE, WOLCOTT, CT 06716, U.S.A.

Inventors:

#	Inventor's Name	Inventor's Address
1	BERGAMO PETER J	85 HARRISON DRIVE, WOLCOTT, CT 06716, U.S.A.

PCT International Classification Number

B25B 27/18

PCT International Application Number

PCT/US01/03699

PCT International Filing date

2001-02-23

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	09/519,362	2000-03-06	U.S.A.