Digital Equipment Corporation

Glenn S Welch

Michael Romm

Stephen A Fidrych

John J Fitzgerald

Keith I Tognoni

Bernie J Maurer

Paul Yonkers

A card cage formed of mating, identical halves provides parallel slots for circuit boards carrying snap-on retainer clips with integral pawl-like clasps which lock over ridges on the exterior of the card cage. The clip is released from the cage by squeezing the clasps with one hand before withdrawing the circuit board. Slotted side brackets capture mating ribs on the card cage halves to assemble and mount the card cge to a wiring clost panel.

Card cage system

A modular faceplate system having four levels of modularity includes a standard faceplate, a plurality of secondary support members, and a plurality of modules. The faceplate may be secured to a variety of support structures such as an outlet box, a modular box and a wall box. The faceplate has an elongated opening formed therein for the secondary support members. The secondary support members support the various different modules in various configurations. The modules can support a variety of electrical devices including plugs and electrical connectors. The faceplate, secondary support members and modules all include snap-type fastening means such that a desired faceplate configuration can be assembled from the component parts without the use of hardware.

Modular faceplate system

A video circuit enclosure for housing a video circuit, such as a video amplifier circuit that is used to drive a cathode ray tube is disclosed. The video circuit enclosure includes a video box with an open face through which the cathode ray tube is inserted. A video board, on which the video circuit is mounted is secured inside the video box. A heat sink is attached to one end of the video box and is a thermal path with heat-generating components on the video board. A socket board, located inside the video box, is mounted to the cathode ray tube. The socket board is located in the video box so it is slightly spaced away from the video board. A video cover is attached to the socket board and spaced away therefrom so it covers the open face of the video box. A set of spring loaded pin contacts attached to the socket board abut contact pads on the video board so as to provide a low impedance electrical slip connection between the boards. A video cover, attached to the socket board, is disposed over the open face of the video box.

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Lynnfield, MA, United States of America

Glenn S Welch