[go: up one dir, main page]

US20070039186A1 - Dynamic bearing manufacturing method - Google Patents

Dynamic bearing manufacturing method Download PDF

Info

Publication number
US20070039186A1
US20070039186A1 US11/367,591 US36759106A US2007039186A1 US 20070039186 A1 US20070039186 A1 US 20070039186A1 US 36759106 A US36759106 A US 36759106A US 2007039186 A1 US2007039186 A1 US 2007039186A1
Authority
US
United States
Prior art keywords
grooves
plate
dynamic bearing
sleeve
hollow cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/367,591
Inventor
Hsiu-Wei Wu
Wen-Shi Huang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delta Electronics Inc
Original Assignee
Delta Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delta Electronics Inc filed Critical Delta Electronics Inc
Assigned to DELTA ELECTRONICS, INC. reassignment DELTA ELECTRONICS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUANG, WEN-SHI, WU, HSIU-WEI
Publication of US20070039186A1 publication Critical patent/US20070039186A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F16C17/026—Sliding-contact bearings for exclusively rotary movement for radial load only with helical grooves in the bearing surface to generate hydrodynamic pressure, e.g. herringbone grooves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/14—Special methods of manufacture; Running-in
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/44—Shaping by deformation without removing material by rolling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49639—Fluid bearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y10T29/49647—Plain bearing
    • Y10T29/49648—Self-adjusting or self-aligning, including ball and socket type, bearing and component making
    • Y10T29/49657—Socket making
    • Y10T29/49663—Socket making by assembling

Definitions

  • the invention relates to a method for producing a dynamic bearing, and in particular to a method for forming grooves on a plate, and following the plate being rolled into a cylindrical bearing.
  • a dynamic bearing for supporting a shaft of a motor provides several miniature grooves formed on an inner wall thereof for receiving oil.
  • oil received in the grooves spreads over the surface of the shaft by attraction force to form a dynamic pressure to support the shaft at the center of the dynamic bearing.
  • the invention provides a method for producing a dynamic bearing without using above described particular tools and machines so as to reduce manufacturing costs.
  • the invention provides a dynamic bearing manufacturing method including steps as follow.
  • a plate is provided and a plurality of grooves is formed on a surface of the plate.
  • the plate formed with grooves is rolled into a hollow cylinder.
  • the grooves are located on the inner surface of the hollow cylinder, and thus the cost of the manufacturing process can be reduced.
  • the plate prepared for the bearing is characterized by a predetermined size, circumferential length and axial hole.
  • the plate is preferably made of flexible materials such as copper, metal or plastic. If the plate is made of metal, the grooves can be formed by a tool slitting the surface thereof, or the grooves can be pressed by a punch machine. If the plate is made of plastic, the grooves of the plate can be formed by injection molding.
  • the dynamic bearing is usually disposed within an axial hole of a sleeve.
  • a sleeve can be formed by a plurality of separable parts, and thus the dynamic bearing can be enclosed by the assembled parts.
  • FIG. 1 is a schematic view of an embodiment of a plate for a dynamic bearing of the invention.
  • FIG. 2 is a schematic view of the processed plate of FIG. 1 , wherein the processed plate is formed with grooves.
  • FIG. 3 is a schematic view of a hollow cylinder, where the hollow cylinder is a dynamic bearing formed by the processed plate of FIG. 2 .
  • FIG. 4 is a schematic view of a sleeve, receiving the dynamic bearing of FIG. 3 .
  • FIG. 5 is a schematic view of the dynamic bearing clamped by the sleeve, wherein the sleeve is formed by a plurality of separable parts.
  • FIG. 6 is a schematic view of another embodiment of a plate for a dynamic bearing of the invention.
  • FIG. 7 is a schematic view of the processed plate of FIG. 6 , wherein the processed plate is formed with grooves.
  • FIG. 8 is a schematic view of another processed plate formed with grooves having a shape of herringbone.
  • a rectangular plate 1 preferably made of flexible materials such as copper, metal or plastic, is prepared for a bearing characterized by a predetermined size, circumferential length and axial hole.
  • the processed plate is formed with a plurality of grooves 10 having a shape of fish bone or can be formed to have other shapes.
  • the grooves 10 of the metallic plate 1 can be formed by a tool slitting the surface thereof, or the grooves can be pressed by a punch machine. If the plate 1 is made of plastic, the grooves 10 of the plate 1 can be formed by injection molding.
  • a dynamic bearing 2 by rolling the processed plate 1 into a hollow cylinder 1 , a dynamic bearing 2 can be formed.
  • the dynamic bearing 2 has an inner hole 20 to receive a shaft (not shown in Figs.), and the grooves 10 are formed on a wall of the inner hole 20 .
  • the dynamic bearing 2 is usually disposed within an axial hole 30 of a sleeve 3 .
  • a sleeve 4 is formed by a plurality of separable parts 4 a and 4 b, and thus the dynamic bearing 2 can be enclosed by the assembled parts 4 a and 4 b.
  • the feature of the invention is that the grooves are pre-formed on the surface of the plate, and then the plate formed with the grooves is rolled into a hollow cylinder, i.e., a dynamic bearing. As the result, no particular tools machines are required, and cost can be reduced. Additionally, it is to be understood that the shape of the plate 1 is not limited to the above-disclosed embodiments. In a preferred embodiment, the plate can be formed into the shape shown in FIG. 6 , or the plate can be formed into any shape where the ends thereof can be connected to each other during the rolling process.
  • the grooves 10 can also be formed to have different shapes such as boomerang ( FIG. 7 ), herringbone ( FIG. 8 ), slanted line or straight line.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)
  • Forging (AREA)

Abstract

A dynamic bearing manufacturing method including steps as follow. A plate is provided and a plurality of grooves is formed on a surface of the plate. The plate formed with grooves is rolled into a hollow cylinder. The grooves are located on the inner surface of the hollow cylinder, and thus to reduce cost of manufacturing process.

Description

  • This Non-provisional Application claims priority under U.S.C. § 119(a) on Patent Application No(s). 094128354, filed in Taiwan, Republic of China on Aug. 19, 2005, the entire contents of which are hereby incorporated by reference.
    • BACKGROUND
  • The invention relates to a method for producing a dynamic bearing, and in particular to a method for forming grooves on a plate, and following the plate being rolled into a cylindrical bearing.
  • In general, a dynamic bearing for supporting a shaft of a motor provides several miniature grooves formed on an inner wall thereof for receiving oil. When the shaft is rotated, oil received in the grooves spreads over the surface of the shaft by attraction force to form a dynamic pressure to support the shaft at the center of the dynamic bearing. Thus, friction between the shaft and the inner wall of the bearing and noise can be reduced and reliability of the motor can be increased.
  • However, forming grooves with desired width and depth on the inner wall of the bearing is not easily controlled. Some methods, such as tooling, rolling, plastic injection molding, erosion, assembling and coating with post-manufacturing, require high skill and precision and cost more than traditional methods, particularly when trade secrets are involved.
  • The invention provides a method for producing a dynamic bearing without using above described particular tools and machines so as to reduce manufacturing costs.
    • SUMMARY
  • The invention provides a dynamic bearing manufacturing method including steps as follow. A plate is provided and a plurality of grooves is formed on a surface of the plate. The plate formed with grooves is rolled into a hollow cylinder. The grooves are located on the inner surface of the hollow cylinder, and thus the cost of the manufacturing process can be reduced.
  • The plate prepared for the bearing is characterized by a predetermined size, circumferential length and axial hole. The plate is preferably made of flexible materials such as copper, metal or plastic. If the plate is made of metal, the grooves can be formed by a tool slitting the surface thereof, or the grooves can be pressed by a punch machine. If the plate is made of plastic, the grooves of the plate can be formed by injection molding.
  • The dynamic bearing is usually disposed within an axial hole of a sleeve. On the other hand, a sleeve can be formed by a plurality of separable parts, and thus the dynamic bearing can be enclosed by the assembled parts.
    • DESCRIPTION OF THE DRAWINGS
  • The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
  • FIG. 1 is a schematic view of an embodiment of a plate for a dynamic bearing of the invention.
  • FIG. 2 is a schematic view of the processed plate of FIG. 1, wherein the processed plate is formed with grooves.
  • FIG. 3 is a schematic view of a hollow cylinder, where the hollow cylinder is a dynamic bearing formed by the processed plate of FIG. 2.
  • FIG. 4 is a schematic view of a sleeve, receiving the dynamic bearing of FIG. 3.
  • FIG. 5 is a schematic view of the dynamic bearing clamped by the sleeve, wherein the sleeve is formed by a plurality of separable parts.
  • FIG. 6 is a schematic view of another embodiment of a plate for a dynamic bearing of the invention.
  • FIG. 7 is a schematic view of the processed plate of FIG. 6, wherein the processed plate is formed with grooves.
  • FIG. 8 is a schematic view of another processed plate formed with grooves having a shape of herringbone.
    • DETAILED DESCRIPTION
  • In FIG. 1, a rectangular plate 1, preferably made of flexible materials such as copper, metal or plastic, is prepared for a bearing characterized by a predetermined size, circumferential length and axial hole. In FIG. 2, the processed plate is formed with a plurality of grooves 10 having a shape of fish bone or can be formed to have other shapes. Note that the grooves 10 of the metallic plate 1 can be formed by a tool slitting the surface thereof, or the grooves can be pressed by a punch machine. If the plate 1 is made of plastic, the grooves 10 of the plate 1 can be formed by injection molding.
  • In FIG. 3, by rolling the processed plate 1 into a hollow cylinder 1, a dynamic bearing 2 can be formed. The dynamic bearing 2 has an inner hole 20 to receive a shaft (not shown in Figs.), and the grooves 10 are formed on a wall of the inner hole 20.
  • In FIG. 4, the dynamic bearing 2 is usually disposed within an axial hole 30 of a sleeve 3. In FIG. 5, a sleeve 4 is formed by a plurality of separable parts 4 a and 4 b, and thus the dynamic bearing 2 can be enclosed by the assembled parts 4 a and 4 b.
  • The feature of the invention is that the grooves are pre-formed on the surface of the plate, and then the plate formed with the grooves is rolled into a hollow cylinder, i.e., a dynamic bearing. As the result, no particular tools machines are required, and cost can be reduced. Additionally, it is to be understood that the shape of the plate 1 is not limited to the above-disclosed embodiments. In a preferred embodiment, the plate can be formed into the shape shown in FIG. 6, or the plate can be formed into any shape where the ends thereof can be connected to each other during the rolling process. The grooves 10 can also be formed to have different shapes such as boomerang (FIG. 7), herringbone (FIG. 8), slanted line or straight line.
  • While this invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (18)

1. A dynamic bearing manufacturing method, comprising steps of:
providing a plate;
forming a plurality of grooves on a surface of the plate; and
rolling the plate into a hollow cylinder, wherein the grooves are located on the inner surface of the hollow cylinder.
2. The method as claimed in claim 1, wherein the plate comprises copper, metal or plastic.
3. The method as claimed in claim 1, wherein the plate comprises two ends engaged to each other.
4. The method as claimed in claim 1, wherein each of the grooves has a shape of fish bone, herringbone, boomerang, slanted line or straight line.
5. The method as claimed in claim 1, wherein the grooves are formed by a tool slitting the surface of the plate, or the grooves are pressed by a punch machine, or the grooves are formed by injection molding.
6. The method as claimed in claim 1, wherein the hollow cylinder is disposed within a sleeve after the step of rolling the plate.
7. The method as claimed in claim 6, wherein the sleeve comprises an axial hole, and the hollow cylinder is disposed within the axial hole of the sleeve.
8. The method as claimed in claim 6, wherein the sleeve is formed by a plurality of separable parts.
9. The method as claimed in claim 8, wherein the separable parts for enclosing the dynamic bearing are assembled into the sleeve.
10. A dynamic bearing manufacturing method, comprising steps of:
providing a plate having two corresponding ends capable of connecting to each other;
forming a plurality of grooves on a surface of the plate; and
connecting the two corresponding ends to each other to form the dynamic bearing.
11. The method as claimed in claim 10, wherein the dynamic bearing comprises an inner hole, and the grooves are formed on a wall of the inner hole.
12. The method as claimed in claim 10, wherein the plate comprises copper, metal or plastic.
13. The method as claimed in claim 10, wherein each of the grooves has a shape of fish bone, herringbone, boomerang, slanted line or straight line.
14. The method as claimed in claim 10, wherein the grooves are formed by a tool slitting the surface of the plate, or the grooves are pressed by a punch machine, or the grooves are formed by injection molding.
15. The method as claimed in claim 10, wherein the dynamic bearing is disposed within a sleeve after the step of connecting the two corresponding ends to each other to form the dynamic bearing.
16. The method as claimed in claim 15, wherein the sleeve comprises an axial hole, and the dynamic bearing is directly disposed within the axial hole of the sleeve.
17. The method as claimed in claim 15, wherein the sleeve is formed by a plurality of separable parts.
18. The method as claimed in claim 17, wherein the separable parts for enclosing the dynamic bearing are assembled into the sleeve.
US11/367,591 2005-08-19 2006-03-06 Dynamic bearing manufacturing method Abandoned US20070039186A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW094128354A TWI257977B (en) 2005-08-19 2005-08-19 Dynamic bearing manufacturing method
TW94128354 2005-08-19

Publications (1)

Publication Number Publication Date
US20070039186A1 true US20070039186A1 (en) 2007-02-22

Family

ID=37765115

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/367,591 Abandoned US20070039186A1 (en) 2005-08-19 2006-03-06 Dynamic bearing manufacturing method

Country Status (3)

Country Link
US (1) US20070039186A1 (en)
JP (1) JP2007051771A (en)
TW (1) TWI257977B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5715504B2 (en) * 2011-06-15 2015-05-07 Ntn株式会社 Multilayer bearing manufacturing method and multilayer bearing
KR101868497B1 (en) * 2016-04-26 2018-06-18 한국기계연구원 Hydro/Hydraulic Power Application Cylindrical Turbine Guide Bearing for Low-Load/Low-Eccentricity Performance Improvements

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1882956A (en) * 1929-08-22 1932-10-18 Johnson Bronze Co Bearing
US1924230A (en) * 1932-01-14 1933-08-29 Moraine Products Company Method of making bushings from strip metal
US5697206A (en) * 1995-02-07 1997-12-16 Tsubakimoto Chain Co. Rolled part for chain and manufacturing method therefor
US6095690A (en) * 1996-01-30 2000-08-01 Glyco-Metall-Werke Glyco B.V. & Co. Kg Sliding bearing element with lubricating oil pockets

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1882956A (en) * 1929-08-22 1932-10-18 Johnson Bronze Co Bearing
US1924230A (en) * 1932-01-14 1933-08-29 Moraine Products Company Method of making bushings from strip metal
US5697206A (en) * 1995-02-07 1997-12-16 Tsubakimoto Chain Co. Rolled part for chain and manufacturing method therefor
US6095690A (en) * 1996-01-30 2000-08-01 Glyco-Metall-Werke Glyco B.V. & Co. Kg Sliding bearing element with lubricating oil pockets

Also Published As

Publication number Publication date
JP2007051771A (en) 2007-03-01
TWI257977B (en) 2006-07-11
TW200708670A (en) 2007-03-01

Similar Documents

Publication Publication Date Title
US8726515B2 (en) Oil-impregnated sintered bearing and method of producing the same
US20070151317A1 (en) Method for forming hollow shaft with a flange and product with hollow shaft formed by the same
JP2005330997A (en) Cylindrical bearing member and manufacturing method thereof
US20070039186A1 (en) Dynamic bearing manufacturing method
JP2000257638A (en) Roller bearing cage and its manufacturing method
JP2009068558A (en) Powder compact, sintered bearing, and process for producing the same
EP1626481A8 (en) Armature shaft producing method, armature shaft, and rotating electric machine
JP2008023556A (en) Plate body made of magnesium or magnesium alloy, caulked assembly with columnar body, manufacturing method thereof, and manufacturing apparatus thereof
US5815923A (en) Bearing and method of manufacturing the same
JP2716031B2 (en) Bearing and its manufacturing method
JP2850135B2 (en) Manufacturing method of hydrodynamic groove bearing
JP2004308683A (en) Manufacturing method for sintered oil retaining bearing and sintered oil retaining bearing
JP2000134880A (en) Method of manufacturing holder member for fluid bearing motor
JPH07213010A (en) Shaft and its manufacture
JP2000257635A (en) Manufacturing method of thrust fluid bearing and fluid bearing device using the same
JP2006043729A (en) Prefabricated frame structure and method for manufacturing the same
JP2000220588A (en) Manufacturing method and device for rotor
JP2005106105A (en) Bearing machining method and its machining device
JP4040187B2 (en) Method of forming projecting shaft on plate
JP2008025657A (en) Method for manufacturing bearing unit
JP4662265B2 (en) Manufacturing method of cylindrical parts
JP2001056028A (en) Manufacture of bearing
JP2001116047A (en) Hydrodynamic bearing device and manufacturing method thereof
JP3073756U (en) Flanged bearing
JP2023092179A (en) Method for manufacturing tubular part, and press device

Legal Events

Date Code Title Description
AS Assignment

Owner name: DELTA ELECTRONICS, INC., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WU, HSIU-WEI;HUANG, WEN-SHI;REEL/FRAME:017667/0848

Effective date: 20060110

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION