Bell Telephone Laboratories

At&t Information Systems Inc.

At&t Bell Laboratories

Western Electric Company, Inc.

At&t Technologies, Inc.

Terry B Prince

John N McGarvey

Michael P Zambelli

Terrance J Paas

Henry J Mack

Martin James Stevenson

Ronald Lee Wild

Andrew H Bobeck

Francis S Doyle

Bruce Hamilton McGahey

William Martin Melbert, Jr

Alvina R Tilley

Controller housing

Keyboard

Housing for communication equipment

Housing for a keyboard or similar article

Video display

To reduce manufacturing costs of telephone instruments it is desirable to secure components to housing members and secure housing members to one another without the use of fasteners. In the past this has been accomplished by the use of flexible latch elements that are deflected from their normal position in the process of assembly, and then return to their normal position to perform their latch function when assembly is complete. The problem with this arrangement is that impact, such as occurs during shipping or when a telephone instrument is accidentally dropped, has been found to cause the flexible latch elements to deflect and release the housing members and/or components they are intended to secure. The disclosed telephone instrument solves the problem of securing the components in place by having integral flexible latch elements (115) extend alongside of a wall (140) of one housing member (100) and integral blocking elements (245) included in the mating housing member (200). These elements are arranged so that when the two housing members are joined together, the blocking elements extend between the wall and the latch elements and prevent the latch elements from deflecting while the housing members are joined. The disclosed telephone instrument solves the problem of securing the housing members together by interlocking one end and latching the other end of the housing members. The latching is achieved by having inflexible latch elements (135, 235) integral to each housing member move into interlocking engagement by means of flexing the adjacent wall (130) of one housing member (100).

Construction of a telephone instrument

A dual-in-line package (DIP) for a bubble memory is achieved by mounting the bubble chip in a cantilevered position in the plane of a rigid conductor arrangement which is interconnected to a DIP base. The lead track arrangement forms a rigid support for the chip fixing the chip in a position for receiving the orthogonal coils which characteristically supply the rotating field for field-access bubble operation.

Magnetic bubble, field-access assembly

Growing community of inventors

Indianapolis, IN, United States of America

Terry B Prince