Schweitzer Engineering Laboratories, Inc.

Gerald K Hein

Mike Timothy Strickler

Joshua E Hughes

Beth LaRae Corwin

Aaron B Burton

Donald Borowski

An arc-flash sensor may provide flexibilities for supporting both surface mounting and peek-through mounting on a panel (e.g., a wall panel or an electrical panel). The arc-flash sensor includes a translucent optical lens, a fiber-optic cable, and a skirt around the back side of the optical lens. The translucent optical lens diffuses the light produced in an arc flash to enhance the detectability of light signals picked by the fiber-optic cable. The fiber-optic cable enters parallel to the panel and perpendicular to principal axis of the optical lens. The parallel fiber-optic cable configuration reduces sensor installation space occupied and potential damage to the sensor. The skirt is used to prevent false tripping caused by unexpected events on the fiber-optic cable side such as camera flashes, lightning, sunlight, or the like.

Arc-flash sensor using optical fiber

A shorting block includes a first shorting contact having a first contact portion, a second shorting contact having a second contact portion, the first contact portion and the second contact portion may electrically couple the first shorting contact and the second shorting contact in a shorting position of the shorting block, a first activation, and a second activation contact, the first activation contact and the second activation contact may be inserted into the first shorting contact and the second shorting contact, respectively, such that the first activation contact and the second activation contact direct the first contact portion and the second contact portion away from one another to form a gap between the first contact portion and the second contact portion in an operating position of the shorting block.

Shorting block for a current transformer

The heat sink assembly includes a heat sink member with a body portion and an upper mounting portion. The heat sink member is connected to an integrated circuit on a printed circuit board assembly. A resilient mounting assembly is positioned on the mounting portion of the heat sink assembly and is constructed and arranged to permit the heat sink assembly to be removably mounted on the mounting member, which in turn is attachable to or part of the chassis of the electronic equipment. The mounting assembly includes a bias element, such as a spring, for holding the heat sink assembly and the mounting member together in a low thermal resistance relationship.

Heat sink assembly for integrated circuits having a slidable contact capability with a mounting member portion of an electronic equipment chassis

The connection element includes a plurality of spring contact assemblies for receiving and making electrical contact with printed circuit boards inserted thereinto, respectively wherein the connection element is configured to mate between a side wall portion of the equipment chassis and an end cover thereof, which are secured together with said connection element captured therebetween, wherein insertion of a printed circuit board into a spring contact assembly results in an electrical ground connection between a circuit ground on the circuit board and the equipment chassis.

Growing community of inventors

Pullman, WA, United States of America

Gerald K Hein