Bridge spring centering device for squeeze film dampers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8894286
SERIAL NO

13304210

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A damper film bearing assembly for supporting a rotatable shaft includes a bearing housing having a longitudinal opening passing therethrough for receiving the rotatable shaft. The bearing housing also has at least one radial recess formed in an outer surface thereof. At least one resilient element is disposed within the recess in the bearing housing above the floor of the recess, the resilient element biasing the support piston away from the axis of the rotatable shaft. The resilient element in accordance with the disclosure may be a bridge spring or a rod spring as appropriate.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
LUFKIN GEARS LLC17021 ALDINE WESTFIELD ROAD HOUSTON TX 77073

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nicholas, John C Wellsville, US 10 105
Rockefeller, Donald H Little Genesee, US 2 27
Shoup, Thomas P Wellsville, US 2 11

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 May 25, 2026
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00