# US 10,481,637 B2 · Metal ceramic chassis for portable devices

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- Number: US 10,481,637 B2
- Document ID: US10481637B2
- Status: Granted
- Kind: B2
- Application number: 15/195,020
- Filed: 2016-06-28
- Published: 2016-10-20
- Granted: 2019-11-19
- Earliest claimed: 2012-11-07
- Assignees: Dell Products L.P.
- Applicants: Dell Products L.P.
- Inventors: Deeder M. Aurongzeb
- Web page: https://patentgrep.com/patent/US10481637B2

## CPC

- G06F 1/1633: {Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626}
- G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position}
- G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)}
- H05K 5/04: Metal casings
- H05K 5/10: comprising several parts forming a closed casing
- Y10T 29/49826: Assembling or joining
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An information handling system chassis is built at least in part from ceramic elements. For example, a transparent aluminum oxide ceramic portion covers a touchscreen to provide a rigid outer surface for accepting end user inputs. As another example, a ceramic chassis element has a ceramic material formed around a metal material of similar substance with bonding of the ceramic to the underlying material enhanced with oxidation of the outer surface of the metal material.

## Claims

### Claim 1

An information handling system comprising:
a processor operable to process information;
memory interfaced with the processor and operable to store the information;
a chassis, the processor and memory contained in the chassis, the chassis having at least one ceramic chassis element comprising a sheet of a first metal having an oxidized outer surface and a ceramic oxide of the first metal disposed over the oxidized outer surface; and
copper disposed over the ceramic chassis element, the copper treated with microarc oxidation of sodium aluminum oxide.

### Claim 2 (depends on 1)

The information handling system of claim 1 wherein the ceramic chassis element is rotated during the microarc oxidation of sodium oxide to provide a rotational pattern.

### Claim 3 (depends on 1)

The information handling system of claim 1 wherein the copper thickness comprises less than 5 per cent of the ceramic chassis element weight.