Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site burl.UUCP
Path: utzoo!watmath!clyde!burl!wts
From: wts@burl.UUCP (wts)
Newsgroups: net.auto
Subject: Re: wiper vanes: why?
Message-ID: <953@burl.UUCP>
Date: Mon, 13-Jan-86 16:03:58 EST
Article-I.D.: burl.953
Posted: Mon Jan 13 16:03:58 1986
Date-Received: Tue, 14-Jan-86 04:49:00 EST
References: <1052@utcs.uucp>
Reply-To: wts@burl.UUCP (wts)
Distribution: net
Organization: AT&T Technologies, Burlington NC
Lines: 12
Summary: 

In article <1052@utcs.uucp> pkern@utcs.uucp (pkern) writes:
>Why do some cars have vanes on the windshield wipers?
>
>signed, moderately curious

If I understand the question correctly, these blades are "Anti-Windlift"
blades manufactured by Anco (aka Anderson Co. of Gary, Ind.). These blades
supposedly use the vanes to add force to the force supplied by the wiper arm,
and supposed keep the blade in better contact with the windshield.  When
first introduced, Anco said that the AWL blade was supplied by them for 
the Lockheed C-5A aircraft and improved pilots rain vision by
um-te-ump %, that the same effect would be good for plain old cars!