Problem statement:   How to effectively lock male and female connectors
                     or sockets effectively

opportunity:  A effective inter-locking mechanism ...such that it locks or
              couples the male female sockets or connectors effectively 

Design specifications:

              when the male ...exerts force or pressure into the female socket key-hole
              ...ability  to exert equal amount of force or pressure ...and lock the
              male into the female socket ...i.e. when male forces into the female
              ...kind of pins or say sigma kind of metallic that protrudes out of the
              female that locks into the locking space of the male ...which can be released
              by ...exerting pressure on the buttons on the female connector.
 
                        Female 
                   -------------------|
                            ----------}
                            ----------}
                   -------------------|              

               ...much on the lines of how key-locks function
               ...some mechanisms that can be observed in door knobs
              

Usages : Sockets, Connectors, Switches, Cables                 
             

Note: The above problem statement having been encountered in various scenarios
      and detailed in various 'Proof of concepts' as mentioned in 
      
       http://uk.geocities.com/ravivenkatus/projects.pdf
       http://ravishankarkv.tripod.com/projects.pdf
        ....apply appropriate
      'use-case' modeling, rationalize and arrive at a workable and feasible 
       solution both commercially and techinically viable.