Rotary impact tools

Claim 1

A ROTARY IMPACT TOOL COMPRISING AN INPUT MEMBER, AN OUTPUT MEMBER, AND AN INERTIA MEMBER, ALL APPROXIMATELY SYMMETRICAL ABOUT A COMMON AXIS AND JOURNALLED UPON EACH OTHER AT MATING MUTUALLY TELESCOPING CIRCULAR SURFACES THEREOF FOR INDEPENDENT ANGULAR MOVEMENT ABOUT SAID AXIS, A CIRCULAR SERIES OF TEETH ON THE OUTPUT MEMBER ABOUT SAID AXIS, A CIRCULAR SHELL COAXIAL WITH THE OUTPUT, INPUT AND INERTIA MEMBER AND AFFIXED TO ONE OF THE LAST TWO MENTIONED MEMBERS, SPRING MEANS HOUSED BY THE SHELL AND YIELDABLY INTERCONNECTING THE INERTIA MEMBER AND INPUT MEMBER SO AS INCREASINGLY TO RESIST ANGULAR RELATIVE MOVEMENT THEREOF IN ONE DIRECTION FROM AN INITIAL RELATIVE POSITION, A PAWL CARRIED BY THE INERTIA MEMBER FOR ANGULAR MOVEMENT THEREWITH AND SPRING-BIASED FOR ENGAGEMENT WITH SAID TEETH AND CAPABLE OF MOVEMENT TO DISENGAGE THE TEETH, AND A CAM ON THE INPUT MEMBER OPERATIVE ON THE PAWL AS A FUNCTION OF SAID RELATIVE MOVEMENT OF THE INPUT MEMBER AND INERTIA MEMBER IN SAID DIRECTION TO FORCE THE PAWL OUT OF ENGAGEMENT WITH ONE TOOTH OF THE SERIES, WHEREBY TO ENABLE THE INERTIA MEMBER TO PRODUCE A FORCIBLE IMPACT THROUGH ENGAGEMENT OF THE PAWL WITH ANOTHER TOOTH OF THE SERIES.