Browse Prior Art Database

Alarm System for the Hearing Impaired using the Release of a Harmless Odor

IP.com Disclosure Number: IPCOM000112284D
Original Publication Date: 1994-Apr-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 67K

Publishing Venue

IBM

Related People

Purdy, GF: AUTHOR [+3]

Abstract

It has been mandated by the Americans with Disabilities Act, a Federal law effective January 1992, that the hearing impaired at the workplace must be given a detectable warning signal, i.e., an alternative to an audio one, in case of fire. Suggested are several means and embodiments to accomplish this for use both in the workplace and in the home. The basic device consists of a silent pager, many of which are commercially available today (e.g., Motorola). This type of pager operates by way of an RF signal from a central control unit. Upon RF activation, the pager located a substantial distance from the control unit, vibrates. If the pager is worn, the vibrations can alert a person wearing the device even though he/she suffers from a severe hearing impairment as the vibration is felt rather than heard.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Alarm System for the Hearing Impaired using the Release of a Harmless
Odor

      It has been mandated by the Americans with Disabilities Act, a
Federal law effective January 1992, that the hearing impaired at the
workplace must be given a detectable warning signal, i.e., an
alternative to an audio one, in case of fire.  Suggested are several
means and embodiments to accomplish this for use both in the
workplace and in the home.  The basic device consists of a silent
pager, many of which are commercially available today (e.g.,
Motorola).  This type of pager operates by way of an RF signal from a
central control unit.  Upon RF activation, the pager located a
substantial distance from the control unit, vibrates.  If the pager
is worn, the vibrations can alert a person wearing the device even
though he/she suffers from a severe hearing impairment as the
vibration is felt rather than heard.  However, if the pager is not
attached to the person, the warning signal will not be sensed.

      This invention consists in modifying the pager to permit the
hearing impaired to be alerted by way of the release of a short burst
of a strong odor, occurring at the time when the modified pager is
activated to indicate a fire.  Activation generally occurs by way of
an RF signal from the RF base station.  The pager contains a small
compartment which houses a source of smell contained within a sealed
capsule.  An alarm which causes the pager vibration simultaneously
causes the source of smell to be released in one of several ways:

1.  A small valve opens over the capsule containing a pressurized
    harmless gas or highly volatile liquid with a strong odor.

2.  A wire is heated to open up a low temperature seal containing the
    pressurized gas or vo...