Bearings – Rotary bearing – Fluid bearing
Patent
1994-01-12
1995-03-21
Hannon, Thomas R.
Bearings
Rotary bearing
Fluid bearing
277 961, F16C 3206, F16J 1538
Patent
active
053990242
ABSTRACT:
A face seal with hydrodynamic thrust pads assembly is provided. The assembly comprises a ring structure with a front side facing in an axial direction that has a seal face continuous about the ring structure and a plurality of cut-outs with concave surfaces spaced concentrically around the seal face. A plurality of elastomeric laminates having a convex side are disposed in the concave surfaces. A plurality of thrust pads are bonded to the laminates such that one side of the thrust pads are all in a plane parallel to the plane of the seal face. When a closing load is transmitted against an opposing member by the sealing pressure against the back face of the assembly while the opposing member rotates relative to the assembly, friction and pressure forces cause the thrust pads to swing about a pivot point located towards the opposing member such that the fluid film converges in the direction of movement of the opposing member. Simultaneously, the seal face seals against the opposing member.
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patent: 5246295 (1993-09-01), Ide
Dresser-Rand Company
Hannon Thomas R.
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