Mobile rock drill carrier suspension system

Claim 1

A ROCK DRILL CARRIER COMPRISING, A PAIR OF LATERALLY SPACED ELONGATED FRAMES EACH CARRYING AN ENDLESS GROUND ENGAGING TRACK, MOTOR MEANS FOR INDEPENDENTLY DRIVING EACH OF SAID TRACKS, A SUPPORT FOR EACH OF SAID TRACK DRIVING MOTOR MEANS, MEANS MOUNTED INTERMEDIATE THE ENDS OF EACH OF SAID FRAMES PROVIDING A PAIR OF INWARDLY PROJECTING AND COAXIALLY ALIGNED PIVOT SHAFTS, A CHASSIS FORMING MEMBER SPANNING THE SPACE BETWEEN SAID FRAMES AND PIVOTALLY SUPPORTED AT ITS OPPOSITE ENDS BY SAID PIVOT SHAFTS, AN EXTENSIBLE HYDRAULIC STABILIZER SECURED BETWEEN SAID CHASSIS FORMING MEMBER AND EACH OF SAID FRAMES EACH OF SAID HYDRAULIC STABILIZERS HAVING A PISTON RECIPROCABLE WITHIN A LIQUID FILLED CYLINDER AND PROVIDING A PISTON DISPLACEMENT CHAMBER, CONDUIT MEANS INTERCONNECTING THE DISPLACE,EMT CHAMBERS OF SAID CYLINDERS ON CORRESPONDING SIDES OF SAID PISTONS WHEREBY SAID FRAMES ARE PERMITTED TO SWING ABOUT THE AXIS OF SAID COAXIAL PIVOT SHAFTS RELATIVE TO EACH OTHER AND RELATIVE TO SAID CHASSIS FORMING MEMBER, A ROCK DRILL ASSEMBLAGE MOUNTED ON SAID CHASSIS FORMING MEMBER FOR TRANSPORTATION BY SAID TRACKS, AND A REACTION LINK PIVOTALLY INTERCONNECTED BETWEEN SAID CHASSIS FORMING MEMBER AN EACH OF SAID MOTOR SUPPORTS FOR PERMITTING RELATIVE MOVEMENT THEREOF WHENEVER SAID FRAMES ARE SWUNG RELATIVE TO ONE ANOTHER AND RELATIVE TO SAID CHASSIS FORMING MEMEBER.