Hamilton Sundstrand Corporation

Charles V DeSantis

Waleed M Said

Kenneth J Trotman

Kerry R Querns

Harold J Hansen

David Perley

Luke T Orsini

Jessica Lyn Michalski

David E Burchell

Shun-Tien Lin

Hamdi Kozlu

A method includes characterizing the effects of an electric field on a first set of printed wiring boards (PWBs) by testing the first set of PWBs to generate test data, using the test data to determine a dielectric life curve of the first set of PWBs, and based on the dielectric life curve, defining a screening time and a screening voltage to screen for premature failures in a second set of PWBs due to electric fields.

Detecting early failures in printed wiring boards

A sealing washer assembly includes a main washer with a bottom annular groove for a removable O-ring and a top recess for a sealing washer. A fastener such as a screw or bolt passes through the sealing washer and the main washer, into a hole in a mounting surface. When the fastener is tightened, the main washer is clamped to the mounting surface to create a metal-to-metal seal, the O-ring is deformed to create a seal between the main washer and the mounting surface, and the sealing washer is deformed to create a seal between the fastener and the main washer.

Sealing washer assembly for large diameter holes on flat surfaces

An adaptor for connecting ball grid array components to a circuit board with a leaded grid array joint, utilizing electric leads which can connect to a ball grid array on one end and a leaded grid array pad pattern on the opposite end.

Area array adapter

Growing community of inventors

Somers, CT, United States of America

Charles V DeSantis