Aktiebolaget Skf

Daniel J Levy

Robert D Pecak

John Arthur Wilkins

Lance A Petzold

David Dobbs

William H Colona, Iii

David J Pinelli

Timothy Patterson

Anand Santosh

A wheel end assembly includes a seal for sealing the annular space between an inner member and an outer member, one of which is a static component and the other a rotatable component. The seal includes an annular case having a cylindrical portion engaged with the static component and an annular flange portion extending radially from the cylindrical portion so as to be oriented vertically with respect to the horizontal central axis. An annular seal member is attached to the flange portion of the case and has at least one sealing lip engaged with the rotatable component so as to separate the annular space into a first chamber and a second chamber. Further, at least one air vent hole extends axially through the flange portion of the case so as to fluidly connect the first chamber with the second chamber.

Seal with axial air vents

An algae separation system can comprise a tank comprising an algae separation chamber. The system can comprise a first inlet to supply algae-containing water to a mixing region of the algae separation chamber. The system can comprise a second inlet to supply gas-containing water comprising dissolved gas to the mixing region of the algae separation chamber. The system can comprise a bubble generator in fluid communication with the second inlet, the bubble generator configured to generate a plurality of bubbles from the gas-containing water and to supply the plurality of bubbles to the mixing region to mix with the algae-containing water.

Algae separation system

A seal includes an annular seal body formed of an elastomeric material and has opposing first and second circumferential surfaces and a sealing projection extending radially from the first circumferential surface. The projection has a frustoconical primary sealing surface with first and second axial ends and an axial length between the first and second ends. The projection is sealingly engageable with the inner surface of the outer member when the seal body is coupled with the inner member, such that substantially the entire axial length of the primary sealing surface is disposed against the inner surface of the outer member. Alternatively, the projection is sealingly engageable with the outer surface of the inner member when the seal body is coupled with the outer member, such that substantially the entire axial length of the primary sealing surface is disposed against the outer surface of the inner member.

Seal having a lip optimized for low temperature applications

A seal assembly for sealing an annular space between a shaft and a housing includes an annular case coupleable with the housing or the shaft and an annular seal member having a sealing surface centered about a centerline. In certain constructions, a coupler is configured to connect the seal member with the case or to connect the case with the housing such that the seal member is positioned with the sealing surface centerline intersecting or skew with respect to a central axis when the seal assembly is installed about the shaft. In other constructions, the seal member has an angled end providing the angled sealing surface. Thereby, the centerline of the sealing surface defines an angle to the central axis having a value of at least one degree, and the sealing surface engages the shaft outer surface to define an elliptical sealing interface extending circumferentially about the central axis.

Angled radial lip seal assembly

An annular seal for a low friction bonded piston seal is provided. The annular seal having a central axis and including an annular seal body symmetrically positioned about the central axis. The annular seal is integrally molded to the body and provides a lower seal lip body, and a top seal lip. The top seal lip including a first radial lip thickness Tand a second radial lip thickness T. A ratio between second radial lip thickness Tto first radial lip thickness Tis less than 1.00. The annular seal includes a radial lip height H, and a radial lip overall pressure received thickness T. A ratio of radial lip height H to second radial lip thickness Tis greater than or equal to 0.65. The radial lip overall pressure received thickness Tis less than or equal to 0.8 mm. The first radial lip thickness Tis less than or equal to 0.7 mm.

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Arlington Heights, IL, United States of America

Daniel J Levy