Browse Prior Art Database

Machine Cover Fastening With Electrical Ground

IP.com Disclosure Number: IPCOM000034977D
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Lowrie, LH: AUTHOR

Abstract

This process is a method of accomplishing three requirements when attaching one cover to a mating front or rear cover. The requirements are alignment, fastening, and electrical grounding. This is accomplished without the aid of screws, but rather by snapping the covers together (see Figs. 1 and 2). (Image Omitted) Center cover 1 is made of steel and plated with nickel. End cover 2 is made of plastic and painted on the inside with conductive nickel paint. The objects labeled as stainless steel alignment and contact strips 3 are spot-welded to the center cover 1. The contact strips are made in such a way that they capture the lip molded on the front cover. This aligns the edges of the two covers. At intervals of approximately three inches along this strip, notches are made.

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Machine Cover Fastening With Electrical Ground

This process is a method of accomplishing three requirements when attaching one cover to a mating front or rear cover. The requirements are alignment, fastening, and electrical grounding. This is accomplished without the aid of screws, but rather by snapping the covers together (see Figs. 1 and 2).

(Image Omitted)

Center cover 1 is made of steel and plated with nickel. End cover 2 is made of plastic and painted on the inside with conductive nickel paint. The objects labeled as stainless steel alignment and contact strips 3 are spot-welded to the center cover 1. The contact strips are made in such a way that they capture the lip molded on the front cover. This aligns the edges of the two covers. At intervals of approximately three inches along this strip, notches are made. This notched area is formed such that it makes an interference contact between the two covers. This provides the electrical contact between the covers. A stud 4 is riveted to strips 3. There are four of these, which snap into the slots in end cover 2 allowing this cover to be attached to center cover 1 without the aid of screws. An angled surface is molded into end cover 2 to allow stud 4 to ramp up the surface before it snaps together.

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