siciti slot type screwdriver by nikeborome

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     May 1967                                                                                                                 Brief 67-10158



                                       AEC-NASA TECH BRIEF
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               AEC-NASA Tech Briefs describe innovations resulting from the research and development program
               of the U.S. AEC or from AEC-NASA interagency effOrts. They are issued to encourage commercial
               application. Tech Briefs are published by NASA and may be purchased, at 15 cents each, from
               the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151.




                         Single Wrench Separates Nuts from Free-Floating Bolts
                                                                                               Pneumatic Impact

                                                                                                   Wrench




.	                    0
                                                                                  Screwdriver Blade                           Free Turning

                                                                                                                                   Bolt

                                                                                                     Screwdriver Slot



     The problem:                                                           the nut. The screwdriver blade is held in the bolt slot
       It was required to remove the nuts from bolts that                   by the action of a spring loading device that permits
     were free to turn. The bolts were in such locations                    the blade to slide within a hollow shaft as the nut is
     that the heads could not be reached or the shafts                      withdrawn. The screwdriver blade is pinned from each
     anchored with a holding tool.                                          side by screws that slide in slots cut into the hollow
     The solution:                                                          shaft.
       A standard pneumatic impact wrench is modified to                    Note:
     incorporate a fixed screwdriver blade that fits a slot                   Inquiries concerning this innovation may be di-
     cut into the threaded end of the bolt shaft.                           rected to:
     How it's done:                                                                    Technology Utilization Officer
        A slot is cut into the threaded end of the bolt shaft.                         AEC-NASA Space Nuclear Propulsion
     A standard pneumatic impact wrench is provided with                                 Office
     a screwdriver blade fixed to the wrench body and pro-                             U.S. Atomic Energy Commission
     truding through the wrench drive socket so that it                                Washington, D.C. 20545
     engages the slot in the bolt end as the socket engages                            Reference: B67-10158
                                                                                                                                (continued overkafl


      This document was prepared under the sponsorship of the Atomic	       liability resulting from the use of the information contained in this
      Energy Commission and/or the National Aeronautics and Space	          document, or warrants that the use of any information, apparatus,
      Administration. Neither the United States Government nor any per- 	   method, or process disclosed in this document may not infringe pri-
      son acting on behalf of the United States Government assumes any 	    vately owned rights.
Patent status:
 No patent action is contemplated by AEC or
NASA.
                             Source: C. Thompson

           of Westinghouse Astronuclear Laboratory

                                  under contract to

                    Space Nuclear Propulsion Office

                                     (NUC- 100 13)




Brief 67-10158	                                        Category 05

								
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