Browse Prior Art Database

ELASTOMERIC TWIST SWITCH FOR PEN STYLE PAGERS

IP.com Disclosure Number: IPCOM000006517D
Original Publication Date: 1992-Aug-01
Included in the Prior Art Database: 2002-Jan-11
Document File: 2 page(s) / 107K

Publishing Venue

Motorola

Related People

Robert L. Sapashe Jr.: AUTHOR

Abstract

As pagers get smaller and take on new and more uni- que form factors and features the area for switch control becomes a limiting factor. This invention relates to a new switching arrangement for pen style pagers. It was the out- come of thinking about how to incorporate reliable switch- ing functionality into the styling of a pen type pager.

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MOTOROLA INC. Technical Developments Volume 16 August 1992

ELASTOMERIC TWIST SWITCH FOR PEN STYLE PAGERS

by Robert L. Sapashe Jr.

  As pagers get smaller and take on new and more uni- que form factors and features the area for switch control becomes a limiting factor. This invention relates to a new switching arrangement for pen style pagers. It was the out- come of thinking about how to incorporate reliable switch- ing functionality into the styling of a pen type pager.

  This invention uses a conductive elastomer wheel, figure 1 item (a), which is connected to the top half (A) of a pen pager. The bottom half of the pager (B) is con- nected to the disk (b) which has inter-digitated gold tin- gers (c) etched on top of it. When the gold fingers are shorted or opened they make or break the switch. As the top half (A) is rotated clockwise and the bottom half
(B) is rotated counter clockwise the conductive wheel rolls over the switch fingers shorting them out and mak-

ing the switch contact. Multiple sets of switch fingers can be placed on the disk thus making it a multiple func- tion controller. Disk (b) can be "bumped or troughed" to provide for switch location feedback.

  The switch arrangement in figure 2 is a take off of the design in figure 1. It uses the conductive wheel in the horizontal plane to make contact with the gold fingers around the periphery of the bottom half(B).

  The switch arrangement in figure 3 applies the con- ductive roller idea to a standard slide...