Patent attributes
A stack of fan case in accordance with the present invention includes a first casing and a second casing stacked on the first casing. The first casing has a first surface, a second surface and a locking surface opposite to the second surface. An insertion bore formed on the second surface has an alignment bore, a fastening bore communicating to the alignment bore and a limit bump formed at the fastening bore. The second casing has a third surface, a fourth surface and at least one fastening member protruding on the fourth surface. The fastening member of the second casing is inserted into the alignment bore of the insertion bore to protrude on the locking surface of the first casing, and then casings are turned to make the fastening member pass through the limit bump and be accommodated within the fastening bore.
