David Chidakel

US Patent:

7839290, Nov 23, 2010

Filed:

Mar 18, 2007

Appl. No.:

11/687660

Inventors:

David Welford Chidakel - Wellesley MA, US
Paul A. Boduch - Northampton NH, US
Michael Ellsworth Beach - Somerville MA, US

International Classification:

G08B 23/00
G08B 21/00

US Classification:

3405731, 340690

Abstract:

A safety device which emits sounds that guide rescuers to people trapped in collapsed structures.

US Patent:

20080055097, Mar 6, 2008

Filed:

Mar 7, 2007

Appl. No.:

11/683423

Inventors:

David Welford Chidakel - Wellesley MA, US
William Harris Groves - Arlington MA, US
Paul A. Boduch - Northampton NH, US
Michael Ellsworth Beach - Somerville MA, US

International Classification:

G08B 17/10

US Classification:

340628

Abstract:

A system of interconnected alarm modules for a building which warn of detectable hazards in and around the building as well as hazards such as natural disasters which originate elsewhere. The network includes at least one hazardous condition alarm module, capable of detecting dangerous conditions in and around the building such as carbon monoxide or smoke and which provides an audible warning accordingly and also transmits hazard-specific data through the network to all other alarm modules. For other types of hazard conditions, the network includes a radio receiver alarm module which receives broadcasts such as those from the National Oceanic and Atmospheric Administration that includes encoded data about hazards according to type of hazard and geographic location. When the radio receiver alarm module receives a broadcast which contains data indicating a threat for the geographic area to which it is preprogrammed, it provides an audible warning accordingly and also sends data, specific to the type of threat, to all other connected alarm modules. Each connected alarm module responds to data received from other interconnected alarm modules by generating audible alarm warnings specific to the type of threat. The radio receiver alarm module may be capable of receiver other types of radio or satellite broadcasts. Electric power to the network is preferably supplied by the building's power mains but may also be provided by a battery backup in the event of a power failure. This invention increases the usefulness of distributed hazardous condition detection systems, allowing them to warn about a great variety of dangers such as tornadoes, earthquakes and terrorism as well as the presence of smoke or other substances for which they were originally intended.

US Patent:

20090029597, Jan 29, 2009

Filed:

Jul 27, 2007

Appl. No.:

11/881468

Inventors:

David W. Chidakel - Wellesley MA, US
William H. Groves - Arlington MA, US
Paul A. Boduch - Northampton NH, US
Michael E. Beach - Somerville MA, US

International Classification:

H01R 25/00

US Classification:

439650

Abstract:

An easily added extender for existing electric outlets with at least one electric outlet of its own which can be positioned beyond the reach of children and pets.