Electric-motor rotary power tool having a light source with a self-generating power supply

A light source apparatus for an electric-motor rotary power tool having a rotatable tool holder assembly and equipped to receive an accessory attachment, said apparatus comprising:

• a magnet constructed and adapted to be removably secured to the rotatable tool holder assembly;
• a generally tubular electrically nonconductive sleeve configured and adapted to be removably attached to a portion of the power tool configured for receiving the accessory attachment, said sleeve having inner and outer surfaces;
• current generating means at least partially imbedded in said sleeve generally between said inner and said outer surface and positioned proximate said magnet when said sleeve is attached to the power tool, for generating an electric current from an alternating magnetic field created by said magnet when the power tool is operated;
• light generating means at least partially embedded in said sleeve between said inner and said outer surfaces at a front end of said sleeve, and being adapted to illuminate when supplied with said electric current from said current generating means;
• and,
• electrical conductors routed through said sleeve between said inner and said outer surfaces for supplying said electric current from said current generating means to said lighting means.

An extension attachment adapted to be removably connected to a rotary power tool and having a light source and a tool bolder, said attachment comprising:

• a connection portion constructed and adapted to be connected to the rotary power tool;
• a substantially flexible extension portion extending from said connection portion;
• a hand piece portion extending from said extension portion;
• a flexible shaft disposed coaxially with said connection, said extension and said hand piece portions, the rotatable tool holder being attached to an end of said shaft in said hand piece portion and extending outside of said handpiece portion for holding a tool;
• a magnet adapted to be attached to the tool holder and rotated by said shaft for producing an alternating magnetic field;
• a generally tubular electrically nonconductive sleeve removably attached to said front end of said hand piece portion, and having inner and outer circumferential surfaces;
• light generating means at least partially embedded in said sleeve between said inner and said outer circumferential surfaces at a front end of said sleeve;
• an inductive coil imbedded at least partially in said sleeve generally between said inner and said outer surfaces, proximate said magnet for generating an electric current from said magnetic field;
• and,
• electrical conductors routed through said sleeve between said inner and said outer circumferential surfaces for supplying said electric current from said current generating means to said lighting means.

A light source apparatus for an extension attachment adapted to be removably and operatively connected to a rotary power and having a rotatable tool holder extending from a distal end of the attachment, said attachment comprising:

• a magnet constructed and adapted to be removably secured to the tool holder;
• a generally tubular electrically nonconductive sleeve configured and adapted to be removably attached to the distal end of the attachment, said sleeve having inner and outer circumferential surfaces;
• an inductive coil at least partially imbedded in said sleeve generally between said inner and said outer circumferential surfaces and positioned proximate said magnet when said sleeve is attached to the attachment, for generating an electric current from an alternating magnetic field created by said magnet when the extension attachment is operated;
• and,
• light generating means at least partially embedded in said sleeve between said inner and said outer surfaces at a front end of said sleeve, and being adapted to illuminate when supplied with said electric current from said inductive coil;
• and,
• electrical conductors routed through said sleeve between said inner and said outer circumferential surfaces for supplying said electric current from said inductive coil to said lighting means.