Apparatus for pulling retainers or seals and the like

Claim 1

SEAL-PULLING APPARATUS FOR DRAWING A SEAL FROM AN ANNULAR RECESS AROUND A SHAFT, COMPRISING: A PAIR OF OPPOSING JAW MEMBERS, EACH JAW MEMBER INCLUDING A LONGITUDINALLY EXTENDING BASE HAVING A CONCAVE LONGITUDINALLY EXTENDING FRONT END PORTION AND A HOLE IN ITS REAR PORTION, A RADIAL LIP PROJECTING FROM A FRONT MARGINAL EDGE OF SAID FRONT END PORTION AND HAVING A FLAT RADIAL REAR SURFACE, SAID LIP BEING ADAPTED TO FIT INTO AND BEHIND SAID SEAL IN SAID RECESS WITH SAID FLAT RADIAL SURFACE FLUSH WITH THE BACK OF SAID SEAL AND SAID CONCAVE FRONT PORTION FLUSH WITH THE INSIDE OF SAID SEAL, AND A PAIR OF SIDE FLANGES FROM A MIDPORTION OF SAID BASE EXTENDING TOWARD OPPOSING AND LIKE FLANGES OF THE OTHER JAW MEMBER; PIVOT MEANS BETWEEN SAID OPPOSING FLANGES FOR PIVOTALLY CONNECTING SAID JAW MEMBERS TOGETHER FOR MOVEMENT OF SAID LIPS TOWARD AND AWAY FROM EACH OTHER; A THREADED ROD; A FIRST NUT FOR RECEIVING SAID THREADED ROD; FIRST AND SECOND THREADED SHAFTS EXTENDING FROM OPPOSITE SIDES OF SAID FIRST NUT THROUGH SAID HOLES IN THE BASES OF SAID JAW MEMBERS AND NORMAL TO SAID THREADED ROD, WITH SAID THREADED ROD EXTENDING BETWEEN SAID JAW MEMBERS TOWARD THE FRONT ENDS THEREOF; SECOND AND THIRD NUTS THREADEDLY RECEIVING SAID FIRST AND SECOND SHAFTS, RESPECTIVELY, BEYOND SAID JAW MEMBERS FOR TRAVELING ALONG SAID FIRST AND SECOND SHAFTS TO ENGAGE THE BASES OF SAID JAW MEMBERS AND SWING SAID LIPS AWAY FROM EACH OTHER; AND GUIDE MEANS CONNECTED TO AND EXTENDING REARWARD FROM SAID PIVOT MEANS FOR LOOSELY RECEIVING SAID THREADED ROD AND CENTERING SAID ROD BETWEEN SAID JAW MEMBERS SUCH THAT AN END OF SAID ROD IS ADAPTED TO ENGAGE THE CENTER OF SAID SHAFT, WHEREBY A TURNING OF SAID ROD TO SCREW SAME FORWARD, WITH SAID FLAT RADIAL SURFACES OF SAID LIPS BEHIND SAID SEAL AND SAID CONCAVE FRONT PORTIONS OF SAID JAWS SUPPORTING THE INSIDE OF SAID SEAL, DRAWS SAID SEAL FROM SAID SOCKET WITHOUT DAMAGING SAID SEAL.