International Business Machines Corporation

Bradley Lewis Martin

Stephen E Wheeler

Gordon W Westphal

Matthew Stephen Doyle

John Richard Dangler

Stephen Peter Mroz

Paul W Schaefer

Thomas Donald Kidd

Kevin J Przybylski

Jason Thomas Stoll

William Michael Monson

Jerry Richard Rasmussen

William D Corfits

Roger F Dimmick

John Theodore Gullicksrud

Wayne J Casanova

Arthur P Reckinger, Jr

Claude J Mosley

Zanti D Squillace

Robert W McCutcheon

William A Hall

Lester C Homan

Frank J Lukes

In a flat flex cable, signal lines are surrounded by logic ground planes above and below which are viaed together left and right. The ground planes coupled with the flex cable dielectric determine characteristic the impedance and attenuation of the cable and provide differential signal EMI shielding. All signal layers and logic ground planes are enclosed within the two outermost shield layers which are viaed together left and right and around the connectors to enclose both signal layers and logic ground planes to provide common mode EMI shielding.

Flexible cable interconnect with integrated EMC shielding

An enclosure and method of making the same provides mounting provisions for shields of expansion cards in a general purpose computer that reduce the number of components and manufacturing steps to produce the enclosure, as well as reducing the time required to add or remove expansion cards. In particular, a housing of an enclosure incorporates a shield mount to receive a shield having an extending tongue and a lateral tab. A specific example of such a shield is tail stock for a Peripheral Component Interconnection (PCI) expansion card. In particular, a receptor is formed into the housing for receiving the extending tongue of the shield. A support member extends outward from the enclosure to abut an outwardly bent tab of the shield that projects out of the panel through a tab opening adjacent to the support member. The support member includes a locking detent that fits within a locking recess in the tab of the shield. A cover of the enclosure mounts to the housing and includes a cover projection that abuts the tab of the shield from a disengagement direction, cooperating with the support member to lock the tab of the shield in place when the cover is installed.

Computer expansion card shield retention device

A data processing system is shown packaged in an enclosure wherein the system frame or chassis and a cable carrier are separately fabricated and thereafter merged to provide an enclosure with open ends and a central cable carrier that mounts connections for the system components. The system components are slideably received by the enclosure and are self docking as the electrical connections with the system power and signal lines are completed as the components arrive at the fully inserted, latched position. Keying means are also provided to require the user to install the components at both the correct location and with the correct orientation.

System cable assembly and component packaging

A structure is shown having three stages for guiding a system component into an operatively mounted position within an enclosure while simultaneously making a blind attachment of the electrical connectors to complete the power and signal circuits between the component and system contained within the enclosure. A coarse positioning structure includes a guide rail means for directing the component toward the operative, mounted position; an intermediate positioning structure functions within the tolerance of the coarse positioning means to substantially align the component including the electrical connectors and a fine positioning means aligns the electrical connectors for the final positioning as the component is latched into the operating position and electrical connections are completed. The three positioning functions are intitated serially.

Three stage self alignment structure and method

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Byron, MN, United States of America

Bradley Lewis Martin