Patent ID: 11898606
Assignee: AKTIEBOLAGET SKF
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A sealing device insertable between two relatively rotatable mechanical parts, comprising:
a first annular element having a first sleeve portion angularly fixed to a first of the two relatively rotatable mechanical parts when in an inserted condition;
a first flange portion that extends in a cantilever fashion from a first end of the first sleeve portion in a first radial direction;
a second annular element, arranged coaxial to the first annular element and comprising a second sleeve portion angularly fixed to and rotating with a second of the two relatively rotatable mechanical parts when in the inserted condition; and
a second flange portion that extends in a cantilever fashion from a first end of the second sleeve portion and in a second radial direction opposite to the first radial direction, the second flange portion facing the first flange portion, the second flange portion comprising:
a plurality of depressions formed on a radial edge of the second flange portion and arranged in a crown adjacently spaced from one another in sequence along the radial edge of the second flange portion, each of the plurality of depressions being rounded at a radially bottom axially facing end,

wherein, the first annular element comprises at least one annular sealing lip that is elastically deformable and is configured to cooperate in a sliding manner with a frontal surface of the second element, which faces the first annular element,
the plurality of depressions at the radial edge face and are adjacent to a second end of the first sleeve portion of the first annular element and face away from the first flange portion of the first annular element, and
wherein the plurality of depressions are defined by a continuous wavy profile comprising a plurality of wave troughs and crests, the wavy profile carried by the radial edge of the second flange portion on the side opposite to the first flange portion of the first element, wherein the wave troughs form the plurality of depressions and the wave crests form a plurality of solid portions alternating with the plurality of depressions.