A quick coupler for mounting implements on excavators has an upwardly facing set of recesses for engaging one mounting pin and a laterally facing set of recesses for engaging the other mounting pin on the implement. A freely rotatable latch closing the lateral recesses is provided with two locking mechanisms,...http://www.google.com/patents/US6336785?utm_source=gb-gplus-sharePatent US6336785 - Quick coupler for heavy equipment
