Patents by Inventor Marcel Techy

Marcel Techy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hammer drill
    Patent number: 4583601
    Abstract: A "hole bottom" hammer drill comprising a tubular body (1) supplied with compressed air, a drill bit (3) and a percussion piston (38) caused to move in an inner cylinder (7) by a mechanism distributing compressed air alternately below and above the piston.The hammer drill includes a device (29) for injecting gas oil into the chamber (71) above the piston (38) and a mechanism (34, 35) for triggering the injection during the upward stroke of the piston (38); the additional compression effects the combustion of the air-gas oil mixture, thus projecting the piston (38) towards the drill bit (3).
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: April 22, 1986
    Assignee: Stenuick Freres
    Inventor: Marcel Techy