Lucent Technologies Inc.

Vince Joseph Masterson

Ningsheng Zhu

John Edward Clarke

A step joint between two plastic pieces suitable for an ultrasonic weld joint. A first plastic piece includes a series of ribs, each rib having generally horizontal top surface. A generally vertical section extends upward behind the ribs. A second plastic piece includes a generally horizontal section for mating with the ribs, the horizontal section of the second plastic piece covering the generally horizontal section of two or more ribs. The second plastic piece also includes a generally vertical section suitable for mating with the generally vertical section of the second plastic piece. A plastic assembly according to another aspect of the present invention includes the first plastic piece and the second plastic piece, a joint between the first and second plastic pieces formed by an abutment between the generally horizontal surface of the second plastic piece and the top surface of the one or more ribs, and between the generally vertical surface of the second plastic piece and the strip of the second plastic piece, and a weld between the first plastic piece and the second plastic piece formed by melted plastic from a partial melt of the first plastic piece and the second plastic piece, the melted plastic flowing into the joint between the first plastic piece and the second plastic piece and hardening to form the weld.

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Buffalo Grove, IL, United States of America

Vince Joseph Masterson