Well packer responsive to tubing reciprocation

Claim 1

IN A WEIGHT SET PACKER HAVING A DEFORMABLE PACKING RING SURROUNDING A MANDREL UNIT BETWEEN A DOWNWARDLY FACING SEAT FIXED ON THE MANDREL UNIT AND AN UPWARDLY FACING SEAT ON A TUBULAR ASSEMBLY SLIDABLY SURROUDNING THE MANDREL UNIT AND INCLUDING AT LEAST ONE INWARDLY PROJECTING PIN AND DRAG BLOCK ARRANGED TO BEAR ON THE WALL OF A WELL IN WHICH THE PACKER IS TO BE SET, SAID MANDREL UNIT COMPRISING A CENTRAL CONDUIT ADAPTED FOR CONNECTION IN A TUBING STRING AND A PAIR OF PIN POSITIONING TUBULAR MEMBERS SLEEVED ON THE OUTSIDE OF THE CONDUIT IN INWARDLY SPACED CONCENTRIC RELATION TO SAID TUBULAR ASSEMBLY AND FIXED TO THE CONDUIT IN AXIALLY SPACED APART RELATION AT ADJACENT END PORTIONS OF THE MEMBERS TO PROVIDE A PIN GUIDING ANNULAR CHANNEL SURROUNDING THE CONDUIT BETWEEN SAID END PORTIONS, THE LOWERMOST OF SAID TUBULAR MEMBERS HAVING ITS UPPER END PORTION OF SAWTOOTH FORMATION ARRANGED TO PRESENT ONE SIDE EDGE OF EACH TOOTH INCLINED DOWNWARDLY AND ANNULARLY FOR PIN CAMMING ENGAGEMENT, THE UPPERMOST OF SAID TUBULAR MEMBERS HAVING A SERIES OF CIRCULARLY SPACED APART LONGITUDINAL PIN LOCATOR SLOTS, EACH OPENING DOWNWARDLY INTO SAID ANNULAR CHANNEL IN LONGITUDINAL ALIGNMENT WITH A DOWNWARDLY INCLINED SIDE EDGE OF A TOOTH THEREBELOW, EACH OF SAID CIRCULARLY SPACED APART SLOTS IN RELATION TO A NEXT ADJACENT SLOT OF THE SERIES DIFFERING IN LENGTH PROJECTION ABOVE THE BOTTOM EDGES OF THE LOWER END PORTION OF THE UPPERMOST MEMBER AND SAID BOTTOM EDGES BEING INCLINED UPWARDLY AND ANNULARLY IN DIVERGENT RELATION TO SAID DOWNWARDLY INCLINED SIDE EDGES OF THE SAWTOOTH UPPER END PORTION OF THE LOWERMOST MEMBER, WHEREBY THE DOWNWARDLY INCLINED AND UPWARDLY INCLINED EDGES COOPERATE IN GUIDING THE PIN FROM BELOW ANY GIVEN SLOT TOWARD LONGITUDINAL ALIGNMENT WITH THE NEXT ADJACENT SLOT IN RESPONSE TO CONDUIT RECIPROCATION.