Sk Chemicals Co., Ltd.

Borgwarner Inc.

Industry-University Cooperation Foundation Hanyang University

Korea Institute of Science and Technology

Keun Ryu

Yong-Baik Cho

Chang-Kyun Han

Wie-Jong Kwak

Hae In Rhee

Nam Ho Kim

Je Ho Ryu

Jung Bum Yi

Joo Hyon Kim

Hunseung Yoo

In Ho Jung

Shin Hyoung Kim

Chang Ho Kim

Hyun Jung Lee

Ju Young Lee

Yong Bok Lee

Bong-Yong Lee

Seung-Jong Kim

Zachary Ashton

Nam Kyu Lee

Sung Hoon Park

Hoe Chul Jung

Bo Ram Lee

Key An Um

Yoon-Jung Lee

So Yoon Lee

Won-No Youn

Jae Sun Kim

Jung A Lee

Young Ah Shin

Hyun Joo Son

Taek-Soo Kim

Do Seung Kum

Joon Ho Sa

Yong Hyuk Kim

Hyung Ook Kim

Ki Won Joung

Kiwon Joung

Hun Seung Yoo

Hyun Sung Jung

Taek Su Kim

Hye Yeon Baek

Jae Yoon Jung

Hye Young Han

Hee Jae Shin

Provided is a floating-sleeve hybrid fluid bearing. The floating-sleeve hybrid fluid bearing may comprise: a bearing housing which is mounted by ring-coupling to the outer circumferential surface of a rotary shaft; and a floating sleeve which is mounted between the rotary shaft and the bearing housing so that there is a gap between the floating sleeve and the rotary shaft, and between the floating sleeve and the bearing housing, wherein the rotation of the floating sleeve is constrained by the bearing housing during the rotation of the rotary shaft, and one side of the floating sleeve in the circumferential direction is open in the radial direction.

Floating-sleeve hybrid fluid bearing

Provided is a hybrid fluid film bearing. The hybrid fluid film bearing comprises: a bearing housing installed on an outer diameter surface of a rotary shaft in the form of being coupled via a ring; a sleeve ring installed between the rotary shaft and the bearing housing, having gaps respectively with the rotary shaft and the bearing housing, and having a side in the circumferential direction opened in the radial direction; and a fixing pin connected between the bearing housing and the sleeve ring, and supported by the bearing housing so as to restrict rotation of the sleeve ring when the rotary shaft rotates. Also, the hybrid fluid film bearing may further comprise a compliant spring damper which is provided in the gap between the bearing housing and the sleeve ring and is provided as one or more bump foils.

Hybrid fluid film bearing

Provided is a rotor system including: a rotating shaft structure including a shaft and a thrust disc formed in a radial direction of the shaft; at least one journal air bearing including a journal bearing support which is made of a rigid body to support a load applied to the shaft by air, a journal spring which encloses an outer surrounding surface of the journal bearing support to provide a elastic support force to the journal bearing support, and a journal damper which encloses the outer surrounding surface of the journal bearing support to dissipate energy from vibration applied to the journal bearing support; and at least one thrust air bearing including a thrust bearing support which is made of a rigid body to support a load applied to the thrust disc by air, a thrust spring which is positioned on one surface of the thrust bearing support to provide a elastic support force to the thrust bearing support, and a thrust damper which is positioned on one surface of the thrust bearing support to dissipate energy from vibration applied to the thrust bearing support.

Air bearing and rotor system

A bearing housing () for a turbocharger having a rotatable shaft () passing through the bearing housing () with journal bearings () having tilting pads () for supporting the rotatable shaft () in the bearing housing (). The tilting pads () may have oil supply holes () through each pad () to direct lubrication to each pad surface (). The journal bearings () preferably have a circumferential groove () on an outer surface of the bearing aligned with the oil supply holes () to help feed oil to the oil supply holes ().

Tilting pad journal bearing for use in a turbocharger

A turbocharger is provided with an improved bearing which is formed as a floating ring bearing or a semi-floating ring bearing having a conical or hemispherical shape which supports both journal and thrust loads. The floating ring bearing may have conical floating ring bearings (), (), () that define inner and outer conical bearing surfaces (), (), () and (), (), () which cooperate on the inside with corresponding conical journals (), (), () that rotate with the shaft (), and cooperate on the outside with a stationary bearing housing () to form inner and outer fluid films. Alternatively, the floating ring bearing may have a pair of hemispherical floating ring bearings (), (), () that have hemispherical inner and outer bearing surfaces (), (), () and (), (), () which form inner and outer fluid films. A semi-floating ring bearing may also be provided with these structures.

Fluid film conical or hemispherical floating ring bearings

A turbochargeris provided with an improved bearing, which may be formed as a semi-floating as a semi-floating ring journal bearing which has hydrodynamic tilting padson the inner diameter thereof and compliant structural damperson the outer diameter thereof. The compliant structural dampersare installed between an outer bearing surface and an inner surface of a bearing chamber. These compliant structural damperscan be formed as metal mesh dampersor bump foil damperswhich are effective to dissipate mechanical energy from structural damping and dry-friction.

Fluid film hydrodynamic tilting pad semi-floating ring journal bearing with compliant dampers

This invention provides a turbocharger bearing assembly having foil bearing assemblies () supporting conical rotor elements ().

Oil-free turbocharger bearing assembly having conical shaft supported on compliant gas bearings

The present invention relates to an extract isolated from Sophorae Radix useful for prevention and treatment of respiratory diseases. More specifically, the present invention relates to a pharmaceutical drug comprising the Sophorae Radix extract having excellent effects of inhibiting airway contraction, respiratory infections, 5-lipoxygenase activity, phosphodiesterase 4 activity, airway hyper-responsiveness and airway remodeling; antagonistic activity against leukotriene D4; and an antitussive effect, thus being useful for prevention and treatment of respiratory diseases such as asthma, acute or chronic bronchitis, allergic rhinitis, acute upper respiratory infections and acute lower respiratory infections, and the like.

Sophorae Radix extract for prevention and treatment of respiratory diseases

Provided are picolinamide and pyrimidine-4-carboxamide compounds, a method for preparing the same, a pharmaceutical composition containing the same, and a medical use using the compound as an agent for preventing, regulating, and treating diseases related to regulation of glucocorticoids by using selective inhibitory activity of the compound for an 11&#x3b2;-HSD1 enzyme. The picolinamide and pyrimidine-4-carboxamide compounds of the present invention are selective inhibitors of human-derived 11&#x3b2;-HSD1 enzymes, and are useful in an agent for preventing, regulating, and treating diseases related to glucocorticoid regulation in which human-derived 11&#x3b2;-HSD1 enzymes are involved, for example, metabolic syndromes such as, type 1 and type 2 diabetes, diabetes later complications, latent autoimmune diabetes adult (LADA), insulin tolerance syndromes, obesity, impaired glucose tolerance (IGT), impaired fasting glucose (IFG), damaged glucose tolerance, dyslipidemia, atherosclerosis, hypertension, etc.

Picolinamide and pyrimidine-4-carboxamide compounds, process for preparing and pharmaceutical composition comprising the same

The present invention relates to a herbal drug composition for cartilage protection comprising plant extracts of Clematis Radix, Trichosanthis Radix, and Prunellae Spica and an optimal content of rosmarinic acid to: (i) alleviate pains; (ii) inhibit the acute/chronic inflammation, platelet/whole blood aggregation, immunocyte (B-lymphcyte and T-lymphcyte) proliferation, inflammation-inducing enzyme activities, and enzyme activities associated with degradation of joint tissue; (iii) scavenge activity of toxic active oxygen radicals; and (iv) further provide excellent cartilage protection activity to be effectively used as an anti-inflammatory agent with analgesic effects, blood circulation enhancer, arthritis therapeutic agent and cartilage protective.

Herbal drug composition for cartilage protection

The invention relates to novel pyridine derivatives having an inhibitory effect on production of cytokines, which are involved in inflammatory responses, thus suggesting its usefulness as therapeutic agents for treating diseases related to inflammation, immune, chronic inflammation as well as an agent having an anti-inflammatory and analgesic effect. Further, this invention relates to a method of manufacturing the same and a pharmaceutical composition containing the same.

Pyridine derivatives, a process for their preparation and a pharmaceutical composition containing the same

There is provided a micro power generating device. A compressor impeller and a turbine wheel are coupled to the ends of a rotating shaft. A cooler is provided for lowering a temperature of the compressed air from the compressor impeller. The compressed air is mixed with the fuel and combusted in a combustion chamber. An air foil thrust bearing for supporting the rotating shaft has a thrust collar coupled to the rotating shaft, as well as a pair of thrust discs located apart from the thrust collar and fixed to the housing. Impeller type seals are formed at both surfaces of the thrust collar and impulse turbine blades are formed at the periphery of the thrust collar. A generator is positioned between the air foil thrust bearing and the compressor impeller. A portion of the cool air is bypassed toward the generator and the impulse turbine blades from the cooler.

Micro power generating device

Disclosed is a method for extracting and purifying active constituents from honeysuckle (Thunb.) and its use. More particularly, this invention relates to an extraction and purification method of active constituents including sweroside from for honeysuckle stem (stem of honeysuckle where leaves are removed) by removing tannins, hardly soluble flavonoids, saponins, and the like. Thus obtained active constituents have better anti-inflammatory and analgesic effect, are safer and more stable than the conventional active constituents obtained from honeysuckle flower or honeysuckle leaves, and include sweroside which is an effective active ingredient of anti-inflammatory and analgesic drug.

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Growing community of inventors

Seoul, South Korea

Keun Ryu