Quick attachment release system for a rotary hand tool

A quick release attachment adaptor for a rotary tool which includes a housing enclosing a motor, the housing having a non-operational end portion and an operational end portion, said quick release attachment adaptor being adapted to connect to a rotary tool accessory attachment which includes a central cavity, an attachment end portion and a working end portion, the central cavity having a non-circular mating element and a biased connection element, said quick release attachment adaptor comprising:

• a non-rotating adaptor base having a central bore, a first end portion and a second end portion with an end face, said first end portion being adapted to be attached to the operational end portion of the rotary tool;
• an annular groove disposed generally perpendicularly of said central bore in the outer surface of said adaptor base and being adapted to matingly engage the biased connection element;
• and,
• a non-circular element formed at the outer end of said second end portion parallel with said central bore on said end face, said non-circular element being adapted to matingly engage the non-circular mating element of the attachment tool.

A quick release attachment adaptor for a rotary tool accessory attachment which includes an attachment end portion and a working end portion, said quick release attachment adaptor being adapted to connect to a rotary tool having a housing which encloses a motor, the housing having a non-operational end portion and an operational end portion, and having a nose portion formed at said operational end portion, the nose portion having a non-circular element at the outer end and an annular groove disposed thereon adjacent said outer end, said quick release attachment adaptor comprising:

• a non-rotating attachment adaptor base having a central cavity, a first end portion having an inside end surface in said central cavity and a second end portion, said first end portion being adapted to be attached to the attachment end portion of the rotary tool accessory attachment;
• a non-circular mating element formed on said inside end surface in said central cavity adapted to matingly engage said non-circular element of the rotary tool;
• and
• a biased connection element provided on said attachment adaptor base, and being adapted to engage the annular groove when said attachment adaptor base is fitted onto the rotary tool.