Patents Assigned to Joe Santa & Associates Pty. Ltd.
  • Radial piston drive motor assembly with exhaust passages in cylinder
    Patent number: 4829879
    Abstract: An air motor 24 which may be employed in a mine drilling apparatus includes a hollow body 26 formed of a plastic material, and a driven shaft 38 rotatably supported by the body 26 and incorporating a valve assembly 34. The body 26 has opposing pairs of external faces 58 within which are mounted metal cylinder sleeves 29 which receive pistons 30. A cylinder head 31 of plastic material closes each cylinder 29 and a piston rod couples opposing pairs of pistons 30 and engages the shaft 38 so that power may be transmitted to this driven shaft 38.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: May 16, 1989
    Assignee: Joe Santa & Associates Pty. Ltd.
    Inventor: Jose L. Santa