Hmmm ... don't know if the Grumman patent is specific to a suspension ... to me it sounded like a claim on the process of manufacturing the bars. The suspension references may only be example of their practical application. I think DMC might hold a patent on the use of a torsion bar on a vertically opening car door. (See link) http://patft.uspto.gov/netacgi/nph-Parser?Sect2=PTO1&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=1&f=G&l=50&d=PALL&RefSrch=yes&Query=PN%2F4378658 Anyway, the Grumman patent seems to have some interesting info on torsion bar manufacturing, and materials. Enjoy! --- In dmcnews@xxxxxxxxxxxxxxx, PAUL LEGUTKI <legutki@...> wrote: > > I thought DMC, Limited, originally owned the door > torsion bar patents, and that JZD bought that > particular item(s) back from the bankruptcy sale. The > patent pictured seem to more related to suspension, > anyway.ChicagoPaul To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/