Esd Pulse, Inc.

Other

Wlodzimierz Woytek Tworzydlo

Vladimir Rodov

A method and apparatus for preventing thermo-mechanical damage to an electrostatic discharge (ESD) protection device is disclosed. The method and apparatus of the invention use materials with superior thermo-mechanical properties, in particular, the Coefficient of Thermal Expansion (CTE), melting temperature, tensile strength and fracture toughness. The thermo-mechanical energy absorber materials are incorporated in, or replace, components of the ESD device that are susceptible to thermo-mechanical stress and cracking due to localized heating and thermal expansion.

Method and apparatus for preventing microcircuit thermo-mechanical damage during an ESD event

A method and apparatus for preventing thermo-mechanical damage to an electrostatic discharge (ESD) protection device is disclosed. The method and apparatus of the invention focus on preventing ESD protection circuit failure due to elastic waves within the materials of an integrated circuit. The elastic waves are specifically caused by very fast ESD discharge events. Disclosed are ESD protection circuits incorporating materials with superior thermo-mechanical properties, in particular, material damping, melting temperature, material stiffness, elastic modulus, tensile strength and fracture toughness. Also disclosed is the use of thermo-mechanical energy absorber material that is designed to protect ESD devices from failure due to slower ESD events.

Method and apparatus for preventing microcircuit dynamic thermo-mechanical damage during an ESD event

A windshield wiper blade assembly equipped with a combination of tilting secondary yokes (38) and airflow deflectors (44) articulated thereon, to provide smooth operation and wind lift resistance at a broad range of driving speeds. Wiper blade assembly (24) is mounted on a distal end of a wiper arm (22) and is driven in a reciprocating motion across a windshield (20). The wiper blade assembly has a wiping element (46) attached to a supporting structure that includes a main yoke (34), two secondary yokes (38) and possibly tertiary yokes (40). Dual-pivot hinges (42) are introduced between main yoke (34) and secondary yokes (36) of the wiper blade. As wiper blade (24) sweeps across windshield (20), the friction force causes limited tilting or canting of the tilting substructure, which includes secondary yokes (38), tertiary yokes (40) and wiping element (46). The tilting produces desirable chatter-resistant angle of attack and reduces squeak. The tilt angle is generally different for each sweep direction. Airflow deflectors (44) are attached to the tilting substructure, generally on the opposite side of the longitudinal pivot axis than wiping element (46). The airflow deflectors produce aerodynamic forces that counterbalance the airflow pressure on wiping element (46), thereby preventing the wiper from being flipped to the undesirable angle of attack by the airflow. Thus, chatter and squeak is prevented at a broad range of driving speeds. Additionally, the airflow deflectors prevent wiper blade liftoff. In an alternative embodiment, one longitudinal pivot hinge (200) is introduced at the connection between main yoke (34) and wiper arm (22). The longitudinal pivot hinge is combined with main yoke airflow deflector (204) and secondary yoke airflow deflectors (206), to accomplish the same results as the primary embodiment.

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Austin, TX, United States of America

Wlodzimierz Woytek Tworzydlo