Dustless drilling apparatus

Claim 1

IN COMBINATION WITH A PERCUSSIVE HAMMER FOR BORING A HOLE IN A MASONRY OBJECT AND HAVING ADAPTER MEANS FOR ENGAGING AND DRIVING A CHUCK, SAID CHUCK INCLUDING A SUBSTANTIALLY CYLINDRICAL BODY HAVING ONE END FOR ENGAGEMENT WITH SAID ADAPTOR MEANS AND A SOCKET AT THE OTHER END ADAPTED TO FRICTIONALLY RECEIVED THE END OF A SELF-DRILLING EXPANSION BIT, SAID CHUCK BODY BEING PROVIDED WITH A TRANSVERSE PASSAGEWAY HAVING ITS AXIS SUBSTANTIALLY PERPENDICULAR TO THE AXIS OF SAID BODY AND INTERSECTING SAID SOCKET SO THAT SAID END OF SAID BIT IS IN COMMUNICATION WITH SAID TRAVERSE PASSAGEWAY; HANDLE MEANS HAVING A HOLLOW HOUSING OPEN AT ONE END FOR RECEIVING SAID CHUCK WHILE PROVIDING PASSAGE FOR SAID ADAPTOR; A NECK PORTION INTEGRAL WITH AND EXTENDING LATERALLY FROM SAID HOUSING AND HAVING A PASSAGEWAY COMMUNICATING WITH SAID TRAVERSE PASSAGEWAY OF SAID CHUCK, A HAND GRIP PORTION INTEGRAL WITH AND FORMING A CONTINUATION OF SAID NECK PORTION AND HAVING A PASSAGEWAY IN COMMUNICATION WITH SAID PASSAGEWAY OF SAID NECK PORTION AND CONTINUING THE LENGTH OF SAID HAND GRIP PORTION; AND MEANS FOR CREATING A VACUUM IN SAID PASSAGEWAYS WHEREBY DUST, CHIPS AND DEBRIS MAY BE WITHDRAWN FROM SAID HOLE AND EXPELLED THROUGH SAID HANDLE MEANS.