Robert E Demers

US Patent:

6474563, Nov 5, 2002

Filed:

Feb 27, 2001

Appl. No.:

09/794441

Inventors:

Timothy Allen Pletcher - Eastampton NJ
Peter John Zanzucchi - West Windsor NJ
Robert Richard Demers - Cranbury NJ
Howard Christopher Rivenburg - Princeton NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

B05B 5025

US Classification:

239 3, 239337, 239690, 2396901, 239706, 239708, 2224021, 22240225

Abstract:

A spraying device for dispensing electrostatic liquid droplets includes a container holding a liquid at one end, and having a nozzle assembly with an aperture at another end. The nozzle assembly includes a longitudinal hollow tube terminating in a metallic structure. The metallic structure includes a metallic base plate having at least one aperture formed therein for fluid communication with the hollow tube. The longitudinal hollow tube includes an end inserted in the liquid. A charge accumulator disposed in the liquid accumulates electrostatic charges. A wire conductor between the base plate and the charge accumulator transfers the electrostatic charges from the liquid to the nozzle assembly.

US Patent:

56776888, Oct 14, 1997

Filed:

May 13, 1992

Appl. No.:

7/882432

Inventors:

Kerry Dennis O'Mara - Florence NJ
Robert Richard Demers - Cranbury NJ
William John Bachman - Mt. Laurel NJ
Paul Joseph Smalser - Hamilton Square NJ

Assignee:

David Sarnoff Research Center, Inc. - Princeton NJ

International Classification:

H03K 1794

US Classification:

341 31

Abstract:

A full N-key rollover capability information entry device includes first and second sets of intersecting light guides oriented at an angle to one another which may comprise a mesh of waveguides that together form a self-supporting planar sheet of a substantially transparent material at the wavelength of light introduced into one end of at least one of the first and second sets of light guides. This permits each intersection to comprise a common portion of both a light guide of the first set and a light guide of the second set that intersect at that intersection. Detection of changes in the intensity of the light in at least one of the sets of light guides in response to key actuation that blocks a portion of the light at a certain intersection is indicative of that actuated key.