Browse Prior Art Database

SEALED TACTILE VIBRATING ALERT SYSTEM with ENERGY STORAGE ASSISTANCE

IP.com Disclosure Number: IPCOM000005963D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2001-Nov-20

Publishing Venue

Motorola

Related People

Authors:
Edward L. Ehmke Robert D. Lloyd Tuan K. Nguyen Thomas J. Rollins

Abstract

Many body-worn devices exist that provide some type of alert to the user, whether it be a timed alert in a watch, a message alert in a pager, an emergency alert in a radiation level detector, or any combination of these or other uses of alerts. These alerts typically are audible in nature and tend to be interruptive in a quiet atmosphere and ineffective in high ambient noise environments. A tactile alert has been utilized in some products which consists of a motor-driven off-balance weight system that transfers the vibration to the entire product in order for the user to notice the alert. These systems generally are expensive, large, unreliable, and require high energy input. With body-worn devices that make direct contact with the user, such as a watch, a pager, or a watch-pager combination, the technology exists to provide a tactile alert that can be produced in a low volume, low profile package applicable to even watches.