Daejong Kim

US Patent:

8500331, Aug 6, 2013

Filed:

Jan 26, 2010

Appl. No.:

12/694262

Inventors:

Daejong Kim - Arlington TX, US
An Sung Lee - Daejon, KR
Young-Cheol Kim - Daejon, KR

Assignee:

Board of Regents, The University of Texas System - Austin TX
Korea Institute of Machinery and Materials - Daejeon

International Classification:

F16C 32/06
F16C 27/02

US Classification:

384106, 384103, 384104, 2989802

Abstract:

An air foil bearing includes a top foil, one or more orifice tubes and two or more bump foil strips disposed within a housing. The top foil is forms a substantially circular shape having one or more sets of top foil orifice holes. Each set of top foil orifice holes has at least three top foil orifice holes along a circumference of the top foil. An orifice tube is provided for each set of top foil orifice holes. The orifice tube includes a flat side having a set of tube orifice holes connected to an outer surface of the top foil. The bump foil strip is attached to the outer surface of the top foil adjacent to each side of each orifice tube. Another embodiment uses a housing with an inner surface having a curved polygonal cross-sectional shape with an odd number of curved sides.

US Patent:

20210324908, Oct 21, 2021

Filed:

Dec 2, 2020

Appl. No.:

17/110116

Inventors:

- Austin TX, US
Daejong Kim - Arlington TX, US

International Classification:

F16C 17/04
F16C 33/10

Abstract:

In one embodiment, a gas foil thrust bearing includes multiple arcuate bearing pads, each bearing pad including a top foil and a compliant support element, each top foil having a leading edge, a trailing edge, and a top surface that extends from the leading edge to the trailing edge, the top surface having a taper-flat-recess configuration in which the top surface includes a taper region located near the leading edge, a flat land region located near the trailing edge, and a pocket recess defined by a base, opposed side walls, and an end wall.

US Patent:

20170089387, Mar 30, 2017

Filed:

May 15, 2015

Appl. No.:

15/311207

Inventors:

- Austin TX, US
Daejong Kim - Arlington TX, US

International Classification:

F16C 17/02
F16C 43/02

Abstract:

In one embodiment, an air foil bearing includes an outer bearing sleeve and multiple inner pads provided within the bearing sleeve, each pad including a top foil and an inner elastic structure that supports the top foil within the bearing sleeve, wherein each pad has an offset ratio that is greater than 0.5.

US Patent:

20170051788, Feb 23, 2017

Filed:

Aug 16, 2016

Appl. No.:

15/237916

Inventors:

Daejong Kim - Arlington TX, US

Assignee:

Board of Regents, The University of Texas System - Austin TX

International Classification:

F16C 32/06
F16C 17/02

Abstract:

In one embodiment, a hybrid foil bearing includes a bearing sleeve, multiple inner foils provided within the sleeve, the foils having gas outlets from which pressurized gas can be injected into an interior of the bearing, and integrated gas flow paths that radially extend through the bearing sleeve and deliver the gas to the gas outlets.