Patent ID: 9441787
Filing Date: 2016-09-13
CPC Classification: F04D,F16P

Claim Text:
1. A rotatable apparatus comprising: a casing including a first casing face provided with an opening and a second casing face abutting the first casing face, the second casing face intersecting the first casing face at angle θ1; and a protector for closing the opening, the protector including a first protector face and a second protector face abutting the first protector face, the second protector face intersecting the first protector face at angle θ2, wherein the protector is configured to be fixed to only the second casing face, the angle θ2 is larger than the angle θ1 when the protector is removed from the casing, and the protector is configured to be attached to the casing in such a manner that the second protector face is fixed to the second casing face, and that the first protector face is elastically deformed so that an edge part of the first protector face, which is located on the side opposite to the second protector face, closely contacts the first casing face.