hi bob
while the original patent has expired, they did do a revision/extension/modification thing a few years ago.
reading what the forum owner, company owner, former hensley employee writes on this issue...
he apparently has new licensing agreements with mr "H" and suggests...
the patients (current or expired) are NOT really any impediment to others doing products that are virtually identical...
he then gives examples i didn't know about (reese had it first, and
passed on the haha, too many parts)
and examples i did know about (hensley copying BAL patented stuff)
while we are on the subject of COPY-ING....
it's no surprise a new company would start a website...
but also a WHOLE NEW RV forum instead of posting the info (or being listed as a vendor) here where MILLIONS can read it!
and he's done nothing on the other BIG sites like rv.net, it appears.
well, he IS apparently looking for a good 'welding and fabrication' shop...
cheers
2air'