Yun Ping Wu

US Patent:

8459812, Jun 11, 2013

Filed:

Apr 27, 2010

Appl. No.:

12/768603

Inventors:

Yun Wu - Queens NY, US
Alfred J. Lombardi - Syosset NY, US

Assignee:

Leviton Manufacturing Co., Inc. - Melville NY

International Classification:

F21V 25/00
H01H 3/04
H05B 41/16

US Classification:

362 2301, 362800, 362583, 362235, 362 85, 200335, 200339, 200452, 200454, 315246

Abstract:

In one embodiment, a system may include an electrical device having an indicator light source, an actuator having a window, a viewing piece arranged to be visible through the window, and a light guide arranged to guide light from the light source to the viewing piece. The viewing piece may have a receiving portion arranged to receive light from the light guide, and the width of the receiving portion may be substantially larger than the width of the light guide. In another embodiment, a system may include an electrical device having a first support member, and an actuator having a second support member. The actuator may be adapted to move along a path of motion from a retracted position to an extended position, and the first and second support members may be adapted to support the actuator in the extended position with forces that are substantially balanced along the path of motion.

US Patent:

20060232227, Oct 19, 2006

Filed:

Feb 27, 2006

Appl. No.:

11/363888

Inventors:

Michael Ostrovsky - Brooklyn NY, US
Yun Wu - Bayside NY, US
Jenkin Hua - Plainsboro NJ, US
Alfred Lombardi - Syosset NY, US
William Ross - West Hartford CT, US

International Classification:

H05B 37/02

US Classification:

315291000

Abstract:

There is disclosed a two wire touch operated dimmer controlled by a membrane potentiometer. Adjusting the DC potential on the membrane potentiometer changes the output potential to a load. In many prior art touch operated dimmers controlled by membrane potentiometers, there is no isolation between the line power and the DC voltage on the membrane potentiometer. Thus, if the membrane is damaged, a user will be exposed to a ground current and possible shock when the membrane is touched. This invention avoids the above noted unsafe condition by employing a high frequency generator and a ground fault current limiting circuit which includes resistors.

Author:

Yun Wu

ISBN #:

7531200252

Author:

Yun Wu

ISBN #:

7806962166