Joseph P Pellegrino

US Patent:

7196349, Mar 27, 2007

Filed:

Feb 17, 2005

Appl. No.:

11/060191

Inventors:

Kambiz Alavi - Grapevine TX, US
Joseph Pellegrino - Woodbridge VA, US
Patrick G Maloney - Arlington VA, US
F. Elliott Koch - Moorpark CA, US

Assignee:

BAE Systems Information and Electronic Systems Integration Inc. - Nashua NH

International Classification:

H01L 31/00

US Classification:

257 21, 257E31033, 438 47

Abstract:

Multi-quantum well (MQW) spatial light modulator devices are disclosed that are capable of achieving reasonable quantum efficiencies and high contrast ratios in order to close an optical communication link by resolving the logical on or off state. The device both modulates and detects light through the use of the quantum well design and resonant cavity enhancement. Based on the materials (e. g. , InGaAs/InAlAs) and their band structures, this device can be configured to communicate in the eye-safe wavelength range (e. g. , 155020 nm). The device can be fabricated using standard photolithographic processes such as molecular beam epitaxy (MBE) and inductively coupled plasma (ICP) reactive ion etching (RIE).

US Patent:

49898280, Feb 5, 1991

Filed:

Jul 25, 1990

Appl. No.:

7/556991

Inventors:

Joseph C. Pellegrino - Baldwin NY

Assignee:

Grumman Aerospace Corporation - Bethpage NY

International Classification:

F15B 1301

US Classification:

251 58

Abstract:

An ancillary mechanically driven ball lock control valve actuation plunger cooperates with a piston for displacing a timer valve plunger. An annular locking plunger is pressurized by fluid at a control port, the sliding motion of the plunger controlling the position of locking balls. As the locking balls change their position, they vary the radial extension of a radial plunger. A first portion of a spring-biased cam maintaining contact with the outward end of the radial plunger. When the radial plunger moves to an extended position, it moves the cam until a second cam portion depresses a timer valve plunger thus changing the timer valve state.

US Patent:

49971603, Mar 5, 1991

Filed:

Jun 8, 1990

Appl. No.:

7/534950

Inventors:

Joseph C. Pellegrino - Baldwin NY

Assignee:

Grumman Aerospace Corporation - Bethpage NY

International Classification:

F15B 1301

US Classification:

251 62

Abstract:

An ancillary hydraulic driven ball lock control valve actuation plunger cooperates with a piston for displacing a timer valve. An annular locking plunger is pressurized by fluid at a control port, the sliding motion of the plunger controlling the position of locking balls. As the locking balls change their position, they vary the radial extension of a further plunger assembly, the latter having detent means for displacing the plunger of a timer valve and thereby changing the valve's state.