Work-gripping wrench socket

Claim 1

IN A WRENCH SOCKET FOR EXTERIORLY GRIPPING AN END PORTION OF THE CASING OF A CYLINDRICAL OIL-FILTERING UNIT WHICH IS THREADEDLY MOUNTED COAXIALLY THEREOF, COOPERATIVE CLAMP ELEMENTS COMPRISING FLAT BASE PORTIONS MUTUALLY LAPPED AND HAVING WORK-ENGAGING JAW PORTIONS EXTENDING RIGIDLY THEREFROM IN MUTUALLY SPACED AND COOPERATIVELY OPPOSED RELATION, SAID BASE PORTIONS OF THE CLAMP ELEMENTS BEING MUTUALLY ENGAGED FOR A RELATIVE ADJUSTMENT OF THE JAW PORTIONS THEREOF IN A FIXED STRAIGHT LINE OF ADJUSTMENT BETWEEN THEM AND PROVIDED THERETHROUGH WITH COMPLEMENTARY TRANSVERSE OPENINGS OF LIKE AND GENERALLY L-SHAPED SECTION WHICH ARE IN LONGITUDINAL AND LATERALLY REVERSED RELATION WITH RESPECT TO EACH OTHER AND TO THE ADJUSTMENT LINE OF SAID CLAMP ELEMENTS, AN ACTUATOR ELEMENT ENGAGED THROUGH SAID OPENINGS AND PROVIDING A CAM PART WHICH IS CONSTANTLY AND DIRECTLY COACTIVE WITH CORRESPONDING EDGE PARTS OF SAID OPENINGS FOR ADJUSTING THE CLAMP MEMBERS TO AND FROM A LIMITING WORKPIECE-GRIPPING RELATION OF THE JAW PORTIONS, AND MEANS ON SAID ACTUATOR ELEMENT AT THE OPPOSITE SIDE OF THE CLAMP BASE PORTIONS FROM THE JAW PORTIONS ADAPTING THE ACTUATOR ELEMENT FOR RELEASABLE AND ONE-WAY TURNING ENGAGEMENT BY A LEVER MEANS TO SUCCESSIVELY EFFECT GRIPPING AND TURNING ACTIONS OF THE JAW PORTIONS WITH RESPECT TO THE OIL-FILTERING UNIT.