Patent ID: 7784491

Claim:
A reservoir assembly of a power steering system, comprising: a reservoir tank defining a tank chamber for holding a power steering fluid and an opening fluidly connected to said tank chamber for allowing power steering fluid to be added thereto; a breathable cap covering said opening and limiting passage of power steering fluid thereby, said breathable cap allowing airflow between said tank chamber and ambient; a cover disposed over said breathable cap for preventing contaminants from entering said tank chamber through said breathable cap, said cover including: a disc section and a skirt depending axially from said disc section, said disc section and skirt covering said breathable cap, and legs protruding radially inwardly from said skirt, said legs including a first leg and a second leg which extends radially inwardly a greater amount than said first leg, wherein, during installation of said cover onto said fluid reservoir, said skirt moves radially outward adjacent said second leg and said skirt moves radially inward adjacent said first leg.