Originally Posted by angrysparrow
It's hidden away in the Articles section, here
Also in the articles section are some DIY guides to making Bridge Hammocks, including a multipart one by TeeDee. If you like the tedium of patent circumvention, you'd probably enjoy seeing how the Bridge evolved.
Thanks for the info. I would give the term ridgeline a very broad definition and then use qualifying terms to narrow the definition for specific cases.
In the following patent the term ridgeline is used to describe Hennessy's ridge cord. It looks like the person who wrote this patent feels that the two terms are synonymous.