Michael Joseph Weaver

US Patent:

6975050, Dec 13, 2005

Filed:

Jan 4, 2001

Appl. No.:

10/169638

Inventors:

Aris C. Cleanthous - Baltimore MD, US
Michael J. Weaver - Stewartstown PA, US
Christopher R. Yahnker - Eldersburg MD, US
Richard T. Walter - Baldwin MD, US

Assignee:

Black & Decker Inc. - Newark DE

International Classification:

H02K007/14

US Classification:

310 50, 310261, 310 43, 310216, 310181, 310152

Abstract:

A system and method for reducing the cost of producing a brushless DC motor is presented. The brushless DC motor provides higher power density and efficiency with an increased tool run time. The brushless DC motor includes a rotor assembly that has an unmagnetized permanent magnet affixed to a shaft. The permanent magnet remains unmagnetized until the motor is partially assembled. A plurality of coils for producing a magnetic field are wound about the rotor assembly. The coils include end turns that enclose the rotor assembly such that the rotor assembly is not removable. Since the windings are wound with the rotor assembly already enclosed, the windings do not require large end coils to allow subsequent insertion of the rotor. Minimizing the end coils reduces the length of wire required per turn, thereby reducing the resistance of the winding. Also, since the permanent magnet is unmagnetized when the coils are wound around the rotor assembly the winding process is simplified by not coupling energy into the wire which would influence the winder operation.

US Patent:

20130082589, Apr 4, 2013

Filed:

Oct 4, 2011

Appl. No.:

13/252491

Inventors:

Woo-Young So - Richboro PA, US
Michael Weaver - Princeton NJ, US

Assignee:

Universal Display Corporation - Ewing NJ

International Classification:

H01J 1/63

US Classification:

313504

Abstract:

Embodiments described herein may provide for devices comprising a power efficient RGBW display. In some embodiments, a may be provided. The first device may include at least one pixel. The pixel may include a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The first sub-pixel may include a first color filter in optical communication with a first organic light emitting device. The second sub-pixel may include a second color filter in optical communication with a second organic light emitting device. The third sub-pixel may include a third color filter in optical communication with a third organic light emitting device. The fourth sub-pixel may include a fourth organic light emitting device and emits near white light. At least one of the first sub-pixel or the second sub-pixel may include a color conversion layer in optical communication with the first or second organic light emitting device.

US Patent:

20150236276, Aug 20, 2015

Filed:

Feb 14, 2014

Appl. No.:

14/181118

Inventors:

- Ewing NJ, US
Alexey Borisovich Dyatkin - Ambler PA, US
Chuanjun Xia - Lawrenceville NJ, US
Scott Joseph - Ewing NJ, US
David Zenan Ll - Princeton NJ, US
Hitoshi Yamamoto - Pennington NJ, US
Michael S. Weaver - Princeton NJ, US

International Classification:

H01L 51/00

Abstract:

The present invention relates to metal complexes having novel ligands. The compounds are useful in organic light emitting devices (OLEDs), particularly as emitting dopants. The incorporation of these novel ligands provides red phosphorescent materials with good external quantum efficiency, good color, and long lifetime.

US Patent:

20150001472, Jan 1, 2015

Filed:

Jul 1, 2013

Appl. No.:

13/932508

Inventors:

- Ewing NJ, US
Alexey Dyatkin - Ambler PA, US
David Zenan Li - Princeton NJ, US
Scott Joseph - Ewing NJ, US
Chuanjun Xia - Lawrenceville NJ, US
Hitoshi Yamamoto - Pennington NJ, US
Michael S. Weaver - Princeton NJ, US
Bert Alleyne - Newtown PA, US
James Fiordeliso - Yardley PA, US

International Classification:

H01L 51/00
H01L 51/50

US Classification:

257 40, 546 4

Abstract:

A compound having an ancillary ligand Lhaving the formula:Formula I is disclosed. The ligand Lis coordinated to a metal M having an atomic number greater than 40, and two adjacent substituents are optionally joined to form into a ring. Such compound is suitable for use as emitters in organic light emitting devices.