Patent ID: 11873903
Assignee: EATON INTELLIGENT POWER LIMITED
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 5:
6. A hydrodynamic seal assembly comprising:
a) a flange;
b) a plurality of segments supported by the flange to form an annulus, each of the plurality of segments including a main body having a radial inner side extending between first and second sides and forming a hydrodynamic seal with a rotating member, the radial inner side defining a main surface extending from the main body first side and a circumferential groove adjacent to and recessed from the main surface and being located proximate to and extending parallel with the main body second side, the main body further defining a plurality of spaced apart hydrodynamic pads, each comprising:
i) a fluid inlet recessed from the main surface and extending transversely from the main body first side to the circumferential groove;
ii) a single lead-in element recessed from the main surface and extending circumferentially from the fluid inlet, the lead-in element having a depth that tapers circumferentially in a direction away from the fluid inlet; and
iii) a first section and a second section recessed from the main surface and extending circumferentially from the single lead-in element and being connected thereto the first and second sections being parallel to each other and separated by a circumferentially extending land forming a portion of the main surface, wherein the first and second sections have a decreasing depth tapering in a direction away from the lead-in element and terminating at the main surface.