Patent ID: 7810477

Claim:
An oil mist removal device, with oil fill, for an internal combustion engine, comprising a housing mounted to said engine for receiving oil mist therefrom, said housing having a first passage extending upwardly from said engine for receiving said oil mist, said housing having a second passage adjacent said first passage, said second passage having an oil drain outlet for draining oil therefrom, said second passage having a gas outlet discharging gas therefrom, said housing having a flow path therethrough from said engine then through said first passage then through said second passage, a separator in said housing along said flow path between said first and second passages and separating said oil mist into separated oil and gas, an oil fill port in said first passage for adding oil to said engine, wherein said first passage has a lower inlet port providing an oil mist inlet receiving oil mist from said engine, and an upper port providing said oil fill port, and comprising an oil fill cap removably mounted to said housing in sealing relation at said oil fill port, said oil fill cap having a first condition mounted to said housing in said sealing relation at said oil fill port and blocking flow of oil mist therepast from said first passage, said oil fill cap having a second condition removed from said housing and permitting oil to be introduced through said oil fill port to flow through said first passage and through said lower inlet port to be added to said engine, said second passage has a first portion passing separated oil downwardly to said oil drain outlet, and a second portion passing separated gas upwardly to said gas outlet, said housing extends along an axis, said first passage extends axially upwardly from said oil mist inlet to said oil fill port, said first portion of said second passage extends axially downwardly to said oil drain outlet, said second portion of said second passage extends axially upwardly to said gas outlet, said first and second passages are laterally offset from each other relative to said axis, and said flow path extends laterally between said first and second passages, said housing has a first wall extending axially along and defining said first and second passages on opposite lateral sides thereof, said housing has a second wall laterally spaced from said first wall and defining said second passage therebetween.