Patent ID: 8276479
Filing Date: 2012-10-02
Classification: F01M,F16H,Y10T

Abstract:
1. A breather for reducing an internal pressure by carrying out an exhaustion to an external portion so as to regulate the internal pressure in an inner portion of a case when the internal pressure in the inner portion of the case rises beyond predetermined pressure, the breather comprising: an exhaust passage leading to the external portion from the inner portion of said case; a liquid recovery passage for recovering the liquid discharged from the inner portion of said case to the inner portion of said case; and a discharge valve which opens when the internal pressure in the inner portion of said case rises beyond the predetermined pressure, wherein said liquid recovery passage is provided in an atmospheric air side beyond said discharge valve, and a recovery valve is provided in the liquid recovery passage, wherein the breather further comprises: a cover body fixedly held onto a surface of said case; and a compartment member for compartmenting a space surrounded by said cover body into an exhaust chamber and a recovery chamber, and wherein said discharge valve is made of a rubbery elastic material, is provided integrally with said compartment member so as to extend toward an atmospheric air side, and includes a discharge lip that elastically contacts said cover body, and said recovery valve is made of a rubbery elastic material, is provided integrally with said compartment member so as to extend toward said inner portion side, and a recovery lip that elastically contacts said case.