Rotary drill shock absorber

Claim 1

A ROTARY DRILLING SHOCK ABSORBER, COMPRISING, AN OUTER TUBULAR MEMBER HAVING AN AXIAL BORE AND CONNECTIBLE AT ONE END TO ONE SECTION OF ROTARY DRILLING STRING, AN INNER TUBULAR MEMBER HAVING AN AXIAL BORE CONNECTIBLE AT ONE END TO ANOTHER SECTION OF SAID ROTARY DRILLING STRING AND INSERTED INTO THE BORE OF SAID OUTER MEMBER TO DEFINE AN ANNULAR SPACE THEREBETWEEN, OPPOSED ANNULAR SHOULDERS ON THE RESPECTIVE MEMBERS AT OPPOSITE ENDS OF SAID ANNULAR SPACE, EACH OF SAID SHOULDERSCARRYING A CONTINUOUS SERIES OF OPPOSITELY FACING CIRCUMFERENTIALLY SPACED CLUTCH TEETH, A PLURALITY OF FORCE TRANSFER RINGS STACKED IN THE ANNULAR SPACE CONCENTRICALLY BETWEEN THE MEMBERS, THE OPPOSITE ENDS OF EACH OF SAID TRANSFER RINGS CARRYING A CONTINUOUS SERIES OF OPPOSITELY FACING CLUTCH TEETH OF COMPLEMENTARY SHAPE AND SPACING TO THOSE CARRIED BY SAID SHOULDERS AND BY EACH OF THE OTHER TRANSFER RINGS, ALTERNATE ONES OF SAID RINGS BEING CONSTRUCTED OF METAL AND THE INTERVENING RINGS OF DEFORMABLE RESILIENT NON-METALLIC MATERIAL, AND ALL OF SAID CLUTCH TEETH BEING OF A SYMMETRICAL GENERALLY V-SHAPE.