The disadvantagesinthe priorart that a chaincan be curled by winding theshaft only in the vertical surface and can not bebent on thehorizontalplane is overcome;
On a late Los Angeles afternoon last fall, up a steep and winding road in lower Benedict Canyon, a covered chain-link fence and a dense covering of trees and shrubs blocked most views of the mansion of Mr. Pritzker, part of the Chicago real-estate family and a billionaire co-founder of private-equity firm the Pritzker Group.