An elliptical exercise machine comprising a base support structure having a front portion, a rear portion, and a pivot joint comprising a pivot mechanism configured to pivotally connect the front and rear portions, the pivot mechanism being configured to facilitate a breakaway of the base support and...http://www.google.com/patents/US7766797?utm_source=gb-gplus-sharePatent US7766797 - Breakaway or folding elliptical exercise machine
