International Business Machines Corporation

Charles C Stratton

Roger Duane Hamilton

Arvind Kumar Sinha

John Lee Colbert

John Saunders Corbin, Jr

Danny E Massey

Don Alan Gilliland

James L Peacock

Jerry Richard Rasmussen

An improved electromagnetic radiation (EMR) shield that has minimal airflow resistance is presented. The EMR shield includes: a base plate; and plurality of columns that project away from the base plate, wherein each of the columns has a first end that is attached to the base plate, a second end that is distal to the base plate, and a side surface that has at least one side hole therein.

3D checkerboard perforation pattern for increased shielding effectiveness

A method of installing a land grid array (LGA) multi-chip module assembly to a printed wiring board is provided. A module holding member is attached to the printed wiring board. The module assembly is inserted into the module holding member. The module assembly is retained to the module holding member, which facilitates mechanical actuation of the LGA compression hardware. The module assembly is electrically grounded to the printed wiring board while the module assembly is retained to the module holding member.

Method of installing a land grid array multi-chip modules

An installation apparatus of installing a land grid array (LGA) multi-chip module assembly to a printed wiring board is provided. A module holding member is attached to the printed wiring board. The module assembly is inserted into the module holding member. The module assembly is retained to the module holding member, which facilitates mechanical actuation of the LGA compression hardware. The module assembly is electrically grounded to the printed wiring board while the module assembly is retained to the module holding member.

Apparatus for mounting a land grid array module

An apparatus for preventing leakage of electromagnetic radiation from a modular electronic planar substrate surrounded by an enclosure that includes a bottom portion, a top portion, a first side portion having apertures adapted for receiving electronic cables, and a second side portion having electrical connections therein. The apparatus includes a bracket having a first end and a second end, the bracket connected to the first side portion, wherein the bracket includes an interior portion and an outer portion which contiguously form a first bracket wall, a second bracket wall and a third bracket wall, such that the second bracket wall is positioned approximately perpendicular to the first bracket wall and the third bracket wall. A first cover and a second cover each have Z-sectional bends which contact the interior portion of the bracket at the first bracket wall and the third bracket wall to respectively form sealed seams which prevent electromagnetic radiation associated with the electronic planar substrate from leaking beyond the enclosure. In addition, the apparatus includes a first grounding spring and a second grounding spring respectively mounted at the first end and the second end of the bracket to provide a ground path from the enclosure to associated enclosures and assist in preventing the electromagnetic radiation associated with the electronic planar substrate from leaking beyond the enclosure. The interior portion of the bracket wraps about the first side portion and flattens the first cover and the second cover respectively against the first bracket wall and the third bracket wall to provide rigid structural support to the enclosure.

Growing community of inventors

Rochester, MN, United States of America

Charles C Stratton