Part of a project on logo design, I have re-created over 25 different Bat-emblems...
Here's a bigger version:
With the exception of 3 of those symbols ("Batman and the Outsiders
" comic title, the "Batman
" title logo from the old TV show, and the logo from the old Ben Cooper costume
), all the emblems have appeared on the Bat-chest at some time or another.
I went with the line art idea similar to that of what Pentagram does with their typography calender
I rejected this earlier design I did. Felt it was a little too stark.