Browse Prior Art Database

BATTERY DOOR VIBRATOR

IP.com Disclosure Number: IPCOM000007068D
Original Publication Date: 1993-Oct-01
Included in the Prior Art Database: 2002-Feb-22
Document File: 3 page(s) / 127K

Publishing Venue

Motorola

Related People

Anthony C. Walker: AUTHOR [+2]

Abstract

Radio Pagers have unique styling which differ- entiates them horn each other to serve different mar- kets, but different styles ofpagers also contain many common elements which are a basic function of their operation. Since pagers are intended to alert their users to incoming messages, both digital and audio, a popular option is the "Wbrapage" feature which silently alerts the user to an incoming page, instead of an alert tone.

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MO-LA INC. Technical Developments Volume 20 October 1993

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BATTERY DOOR VIBRATOR

by Anthony C. Walker and Ralph Merino

  Radio Pagers have unique styling which differ- entiates them horn each other to serve different mar- kets, but different styles ofpagers also contain many common elements which are a basic function of their operation. Since pagers are intended to alert their users to incoming messages, both digital and audio, a popular option is the "Wbrapage" feature which silently alerts the user to an incoming page, instead of an alert tone.

  The "Vibrapage" feature is extremely popular, and is sold on the majority of pagers within some product lines. The present day implementation of the "Vibrapage" feature is accomplished by mount- ing a micro-miniature motor within the pager, incor- porating an eccentric weight on the shatI, which alerts the user by a silent vibration ofthe unit when an incoming message is received. This eccentric weight can become noisy with use, or become defec- tive necessitating repair ofthe unit at a service facility,

  Since the motor is mounted within the radio, units which do not have this feature have open unused PC board space within the radio, making these units larger than needed so that the same model can include the 'Wbrapage feature when ordered.

An alternative motor style has recently become available and has been considered as an alternative

to the axial shall motor commonly used in pagers. This pancake style motor with eccentric weight is an effective alerting device, however the PC board space used tend to be larger than that used by the conventional motor, and the plane of vibration is less noticeable to the user when a pancake motor is mounted inside the pager.

  This disclosure covers a proposed design for inte- grating the vibrator motor within the battery door, utilizing a pancake style motor. Several benefits to the manufacturer and pager user are available from this proposal. Figure 1 shows how the unitized motor

and battery door appear; on the bottom view of the pager.

  Pager design internally would remain the same, and would not depend on whether the "Vibrapage feature was or...