Topic starter
03/01/2008 8:16 am
While doing some online research for a new page at steamboats.org about the Maneuverboat 35 that is part of an exhibit of the Army Corps or Engineers at Hannibal Locks & Dam on the Ohio River (www.steamboats.org/steamboat-pictures/maneuverboat-35.html), I found two very interesting patents dealing with wicket dams, just issued in 1994 and 1995:
Wicket dam and lifting jack
(www.patentstorm.us/patents/5433555.html)
Weak link prop for wicket dam
(www.patentstorm.us/patents/5310284-description.html)
Does anyone have an idea on why there are still patents being requested for a technology that almost vanished?
03/01/2008 1:39 pm
Still Used on Ohio River
Olmstead L&D, for one, will have a wicket dam when completed.
http://www.hq.usace.army.mil/cepa/pubs/feb01/story7.htm
List of crossings on the Ohio River:
http://en.wikipedia.org/wiki/List_of_crossings_of_the_Ohio_River
Topic starter
03/01/2008 4:36 pm
Thanks! Well, that happens if you're too sure about a fact, hence that wicket dams are an old and disappearing technology. Even if you read the opposite you don't see it 😉 and I did read the Chuck Parrish document ...