초록 ▼

An oil seal apparatus, particularly for use with a vehicle engine, wherein an oil seal coacts between a stationary casing and a rotatable shaft which projects through the casing. The oil seal apparatus includes an annular elastomeric seal member having a pair of axially spaced annular lip portions d

An oil seal apparatus, particularly for use with a vehicle engine, wherein an oil seal coacts between a stationary casing and a rotatable shaft which projects through the casing. The oil seal apparatus includes an annular elastomeric seal member having a pair of axially spaced annular lip portions disposed for engagement with the shaft. One lip portion is positioned innermost for creating an oil seal, and the other lip portion is positioned outermost for creating a dust seal. This other lip portion is provided with a auxiliary annular lip which projects axially outwardly along the shaft. The auxiliary lip has an annular groove around its periphery to facilitate transfer of water around the seal member and prevent the water from flowing axially inwardly along the shaft past the dust seal.

대표청구항 ▼

In an oil seal apparatus including a stationary casing, a shaft rotatable in said casing, and an oil seal ring for preventing passage of oil from between the shaft and the casing, the oil seal ring being fixed to said casing at one end and maintained in snug sealing contact with said shaft at the ot

In an oil seal apparatus including a stationary casing, a shaft rotatable in said casing, and an oil seal ring for preventing passage of oil from between the shaft and the casing, the oil seal ring being fixed to said casing at one end and maintained in snug sealing contact with said shaft at the other end, said oil seal ring having a mounting portion fixed to the casing and a main lip portion snugly contacting said shaft at a first axial location, comprising the improvement wherein said oil seal ring has an auxiliary lip portion which snugly contacts the shaft at a second axial location farther outside of the casing than said first axial location, and said auxiliary lip portion defining at the free edge thereof an elongated annular flange surrounding and extending axially of the shaft in a direction away from said first axial location, said annular flange being preformed to define an annular groove around its periphery.