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Inventor’s

                      Corner






                         By William Fischer

         As always, we would like to express appreciation
         to our readers for your interest in Inventor’s Corner
         and  our  publication.  I sincerely  hope  that  your
         summer has been an especially productive one.
         As the summer  draws to a close, the changing
         weather seems emblematic of an economy and an
         industry that is in flux. Uncertainty reigns. It appears that construction and production in
         general has picked up in certain areas. However, it is far from uniform, and our economy
         continues to face serious challenges. The allegedly shrinking unemployment rate has
         left behind many in our industry. However, the industry continues to innovate. If and
         when the time is right, we will be ready to do the job. Here is hoping for a prosperous
         future for all our readers and the industry to which we are dedicated.


         Helicopter transportable antenna mast and stay ca-
         ble system
         Pat. 7,796,093  U.S. class 343/874  Int. class H01Q 1/12
         Inventor: Gary Lee Scott, Richmond, TX.
         Assignee: Geokinetics Acquisition Company, Houston, TX.
           An antenna mast system includes an antenna mast and a
         plurality of circumferentially spaced apart upper cable ten-
         sioning arms each coupled at one end proximate the top of   Figure 2: Mast segments threadedly coupled end to end.
         the mast. A plurality of circumferentially spaced apart lower   elongated antenna mast 12. The antenna mast 12 may be
         cable tensioning arms are each coupled at one end to the mast   made from tubular segments (not shown separately in figure
         at a selected distance below the upper cable tensioning arms.   1) joined together end to end, such as by threaded coupling,
         A plurality of stay cables are each coupled at one end to one   pinning or other device known in the art to couple segments
         of the upper cable tensioning arms and at the other end to an
                                                              longitudinally to form an elongated element. The mast 12
                                                              may be made from aluminum or other high strength, light-
                                                              weight metal, or from fiber reinforced plastic, such as glass
                                                              fiber or graphite fiber reinforced plastic.
                                                               Examples of coupling mast segments end to end are shown
                                                              in figures 2 and 3. Figure 2 shows a mast segment 112A hav-
                                                              ing a male threaded coupling 112 at one end. The threads
                                                              on the male threaded coupling 112 are configured to mate
                                                              with threads on a corresponding female threaded coupling
                                                              212 disposed at the longitudinal end of an adjacent mast
                                                              segment 112A. Figure 3 shows a mast segment having a re-
                                                              duced diameter pin end 312 and a hole 112B for a locking
                                                              pin 112C. A mating box end 412 with corresponding lock-
                                                              ing  pin hole  112B  is  shown  at the longitudinal  end of an
                                                              adjacent mast segment 112A and accepts the pin end 312.


         Figure 1: One example of an antenna and stay cable system installed,
         assembled and erected at a particular location.

         anchor affixed to the ground. The stay cables are each coupled
         to a respective one of the lower tensioning arms. The system
         includes means for tensioning the stay cables.
           One example of an antenna mast and stay cable system
         according to the invention is shown installed and assembled
         in figure 1. The mast and stay cable system 10 includes an   Figure 3: Mast segments pinned together end to end.
         56     Wire Rope News & Sling Technology   August 2017
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