Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Saturday 31.10.2020 at 7:00 AM CET
Settings

Settings

Goto Application

1. WO1990014728 - BEEPER AMPLIFIER

Publication Number WO/1990/014728
Publication Date 29.11.1990
International Application No. PCT/US1990/002720
International Filing Date 18.05.1990
Chapter 2 Demand Filed 21.11.1990
IPC
G08B 3/10 2006.01
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
3Audible signalling systems; Audible personal calling systems
10using electric transmission; using electromagnetic transmission
CPC
G08B 3/1025
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
3Audible signalling systems; Audible personal calling systems
10using electric transmission; using electromagnetic transmission
1008Personal calling arrangements or devices, i.e. paging systems
1016using wireless transmission
1025Paging receivers with audible signalling details
G08B 3/1041
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
3Audible signalling systems; Audible personal calling systems
10using electric transmission; using electromagnetic transmission
1008Personal calling arrangements or devices, i.e. paging systems
1016using wireless transmission
1025Paging receivers with audible signalling details
1041with alternative alert, e.g. remote or silent alert
Applicants
  • HERRERA, Juan, H. [CU]/[US]
Inventors
  • HERRERA, Juan, H.
Agents
  • SANCHELIMA, Jesus
Priority Data
355,22622.05.1989US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BEEPER AMPLIFIER
(FR) AMPLIFICATEUR D'AVERTISSEUR SONORE
Abstract
(EN)
An amplifier (10) in a housing (20) for receiving and detecting the presence of portable paging devices (B) that produce an audible signal when activated. The amplifier (10) allows the connection of a larger capacity annunciator or visual alarm (35). Circuitry (40) is provided to connect the output of the amplifier (10) to the bell of conventional telephone sets T without affecting its normal operation. The telephone set T bell can be activated with a voltage signal different from the one it normally generates so that a user can distinguish the two calls.
(FR)
L'invention concerne un amplificateur (10) ménagé dans un boîtier (20) pour recevoir et détecter la présence de dispositifs portables de recherche de personne (B) qui produisent un signal sonore lorsqu'ils sont activés. L'amplificateur (10) permet de connecter un avertisseur de plus grande capacité ou une alarme visuelle (35). Un circuit (40) est prévu pour connecter la sortie de l'amplificateur (10) à la sonnerie de téléphone classique T sans affecter son fonctionnement normal. La sonnerie du téléphone T peut être activée avec un signal de tension différent du signal normal de sorte qu'un utilisateur peut distinguer les deux appels.
Also published as
Latest bibliographic data on file with the International Bureau