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US4496251A Expired / Lapsed US ⏱️ 0.0 years remaining

Pad-type hydrodynamic bearing

Assignee: KMC BEARINGS Inc
•
Filing: 1984-05-14
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Granted: 1985-01-29
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Expires: 2004-05-14
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Abstract

Abstract A pad-type sliding surface bearing is disclosed, in which the bearing surface is segmented into a plurality of pads that rockingly displace themselves to form a wedge shape converging in the direction of motion with a relatively moving part. The pads are each supported in a bearing housing or a support portion by a plurality of webs which indeed are integral with the pad and the housing or support portion, which allow the pad to rock by deflection of the webs. The opposing part that moves relative to the pads creates a viscous friction force in the direction to form a converging web shape between the moving part and the bearing pad, which rocks to a position until the bearing surface stabilizes where the moments of the fluid pressure and the load are in balance.

Inventors

  • 👤 Russell D. Ide

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 07:52
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/02; F16C17/03; F16C17/035; F16C2300/00; F16C2300/02

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 73 words
A hydrodynamic bearing supporting an opposing moving part, a plurality of bearing pads, each pad having a face member and a support member, said pad being separated from said support member and by a plurality of web-like ligaments, the face of said pad having a load-engaging surface, said pad under the action of friction on the face thereof rocking to cause the trailing edge to approach the member being supported in bearing relationship.
Claim 2
Dependent Claim 73 words
A hydrodynamic bearing supporting an opposing moving part, a plurality of bearing pads, each pad having a face member and a support member, said pad being separated from said support member and by a plurality of web-like ligaments, the face of said pad having a load-engaging surface, said pad under the action of friction on the face thereof rocking to cause the trailing edge to approach the member being supported in bearing relationship.
Claim 3
Dependent Claim 18 words
A hydrodynamic bearing as in claim 1 wherein said ligaments are disposed beneath the pad in a arc.
Claim 4
Dependent Claim 24 words
A hydrodynamic bearing as in claim 2 wherein the center of radius of said arc is in fron of the face of the pad.
Claim 5
Dependent Claim 15 words
A hydrodynamic bearing as in claim 1 wherein the ligaments are of uniform cross section.
Claim 6
Dependent Claim 15 words
A hydrodynamic bearing as in claim 1 wherein the ligaments have a thin center section.
Claim 7
Dependent Claim 26 words
A hydrodynamic bearing as in claim 1 wherein the pads are arranged in an arc to form a journal bearing and the pad faces are arcuate.

References Cited (Backward Citations)

US3791703A Cited
US3944304A Cited
US3930691A Cited
US4403873A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-01-29 1988-07-30 1989-01-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-01-29 1992-07-30 1993-01-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-01-29 1996-07-30 1997-01-29 $7700.00 Window Closed / Lapsed

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