How does Google view redirects from generic sites such as wrenches.com to a company specific site such as acmewrenches.com. Does Google view this as a black hat exercise?
as long as its a genuine site change from wrenches.com to acmewrenches.com and done with a permanent 301 redirect there should not be a problem with google, it may take a little time for PR to move from one site to the other, i think you will find other SE's take a lot longer than G.