Wei C Li

US Patent:

6647898, Nov 18, 2003

Filed:

Aug 9, 2002

Appl. No.:

10/216581

Inventors:

Wei Li - Pittsburgh PA

Assignee:

Westinghouse Air Brake Technologies Corporation - Wilmerding PA

International Classification:

B61C 1700

US Classification:

105458, 414480, 414537

Abstract:

A ramp actuating mechanism for a rail vehicle having a movable ramp and a movable draft arm and coupler arrangement, wherein a spring assisted apparatus can be associated with the movable draft arm and coupler arrangement to counterbalance the load of the movable draft arm and coupler arrangement.

US Patent:

7005185, Feb 28, 2006

Filed:

Nov 27, 2002

Appl. No.:

10/307201

Inventors:

Wei (Helen) Li - Puyallup WA, US
Kishio Miwa - Shiga, JP

Assignee:

Toray Composites (America), Inc. - Tacoma WA

International Classification:

B32B 27/38

US Classification:

428413, 528119, 528120, 528121, 528327, 528363, 528365, 523427, 523428, 523466, 523468, 525404

Abstract:

An epoxy composition includes an epoxy resin, a latent curing agent, and a catalyst. The composition includes two epoxide groups per molecule, and the latent curing agent is preferably a dicyanopolyamide, and most preferably dicyandiamide. The catalyst includes 2,4-toluene bis dimethyl urea, preferably in a concentration exceeding 70% by weight. The composition can be used in prepregs. The relative concentrations of the epoxy resin, curing agent, and catalyst are selected to achieve desired properties, including specific curing times and temperatures, and glass transition temperatures that enable a cured resin composition to be removed from a mold after being heated to its curing temperature, without being cooled. Exemplary formulations have reduced cure times, at both high and low curing temperatures, as compared to prior art formulations.

US Patent:

7276669, Oct 2, 2007

Filed:

Oct 6, 2004

Appl. No.:

10/958238

Inventors:

Kristofor Lee Dahl - Homer Glen IL, US
Eric Wade Cler - Peoria IL, US
Wei Li - Peoria IL, US
Randy G. Aneloski - Channahon IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

G01G 19/08
G06F 17/00

US Classification:

177 45, 177136, 701 50, 701124

Abstract:

A work machine may have a payload overload control system. The system may include a payload carrier and a lift mechanism configured to raise and lower the payload carrier. The system may further include a payload monitor configured to determine a payload in the payload carrier. The system may also include a controller configured to compare the determined payload with a predetermined maximum payload and to selectively control lift of the payload carrier by the lift mechanism based on the comparison between the determined payload and the predetermined maximum payload.

US Patent:

7763456, Jul 27, 2010

Filed:

Sep 28, 2007

Appl. No.:

11/864698

Inventors:

Wei Li - Shoreline WA, US
Hai Wang - Seattle WA, US

Assignee:

University of Washington - Seattle WA

International Classification:

C12M 3/00
C12Q 1/02

US Classification:

4352885, 435 29

Abstract:

A polymeric chip having at least one three-dimensional porous scaffold, a microfluidic channel inlet to the porous scaffold, and a microfluidic channel outlet from the porous scaffold. In one embodiment, the polymeric chip has two three-dimensional porous scaffolds: one scaffold comprises liver cells and the other scaffold comprises cancer cells. The chip can be used as a multi-organ tissue model system.

US Patent:

7804970, Sep 28, 2010

Filed:

Oct 24, 2005

Appl. No.:

11/257383

Inventors:

Rick Hippe - Snohomish WA, US
Wei Li - Bothell WA, US
Allan Coleman - Edmonds WA, US

Assignee:

SonoSite, Inc. - Bothell WA

International Classification:

H04R 25/00
A61B 8/14

US Classification:

381191, 310334, 367153

Abstract:

Systems and methods which improve the directivity of a transducer array by reducing electrical cross-talk between conductors connected to individual transducer array elements through the use of a plurality of interconnect circuits are shown. A plurality of signal transmission path circuits, such as circuit boards, flexible printed circuits, etc. , are used to provide electrical power to and receive signals from transducer elements of a transducer array. Embodiments couple transducer elements to conductive traces of the signal transmission path circuits in a manner such that adjacent transducer elements are not connected to conductive traces on the same signal transmission path circuit. In some embodiments, a plurality of signal transmission path circuits are offset such that two identical signal transmission path circuits can be used to provide connectivity to array transducer elements using more widely spaced conductive traces, thus reducing electrical cross-talk effects.

US Patent:

8016470, Sep 13, 2011

Filed:

Oct 8, 2008

Appl. No.:

12/287481

Inventors:

Wei Li - South Barrington IL, US
Jamie Swayne - Lake Zurich IL, US
Austin E. Unsworth - Fort Mill SC, US
Nabil Dagher - Charlotte NC, US
H. Thomas Lockamy - Charlotte NC, US

Assignee:

Dental Equipment, LLC - Charlotte NC

International Classification:

F21V 13/00

US Classification:

362573, 362572, 362294

Abstract:

An electrically powered light source including a light emitting diode (LED) having variable chromaticity, which is adapted for use in a dental operatory. A dental operatory lamp includes a thermally conductive housing having a front directed toward the operating area and a rear away from the operating area; a generally elliptical reflector located on the rear of the thermally conductive housing; at least one heat pipe; a plurality of color LEDs projecting light toward the elliptical reflector, the plurality of LEDs being in thermal contact with the at least one heat pipe; and an optical light guide for combining light from said LEDs. Another embodiment of the lamp includes at least two user selectable light spectra, one of said spectra providing white light with color temperature in the range 4000 K-6000 K and one spectra having reduced output in the wavelength range 400-500 nm.

US Patent:

8079957, Dec 20, 2011

Filed:

Nov 18, 2005

Appl. No.:

11/283436

Inventors:

Qinglin Ma - Bellevue WA, US
Gianluca Paladini - Skillman NJ, US
Wei Li - East Brunswick NJ, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

A61B 8/00

US Classification:

600438, 600437

Abstract:

Ultrasound imaging is synchronized with measurements. Generating three-dimensional representations is synchronized with measuring one or more parameters. For example, measurements are preformed based on navigating through a volume. The measurements are linked to the corresponding three-dimensional representations. As another example, the user selects a measurement from a graph. A three-dimensional representation of the volume associated with the selected measurement is presented.

US Patent:

8388205, Mar 5, 2013

Filed:

Sep 13, 2011

Appl. No.:

13/231221

Inventors:

Jamie Swayne - Lake Zurich IL, US
H. Thomas Lockamy - Monroe NC, US
Nabil Dagher - Charlotte NC, US
Wei Li - South Barrington IL, US

Assignee:

Dental Equipment, LLC - Charlotte NC

International Classification:

F21V 7/00
F21S 8/00

US Classification:

362573, 362572, 362555, 362 85, 362231

Abstract:

An electrically powered light source including a light emitting diode (LED) having variable chromaticity, which is adapted for use in a dental operatory. A dental operatory lamp includes a thermally conductive housing having a front directed toward the operating area and a rear away from the operating area; a generally elliptical reflector located on the rear of the thermally conductive housing; at least one heat pipe; a plurality of color LEDs projecting light toward the elliptical reflector, the plurality of LEDs being in thermal contact with the at least one heat pipe; and an optical light guide for combining light from said LEDs. Another embodiment of the lamp includes at least two user selectable light spectra, one of said spectra providing white light with color temperature in the range 4000 K-6000 K and one spectra having reduced output in the wavelength range 400-500 nm.