Matthew R Pike

US Patent:

20090242218, Oct 1, 2009

Filed:

Mar 12, 2009

Appl. No.:

12/381485

Inventors:

Marthinus Cornelius Van Schoor - Medford MA, US
Attila Jozsef Lengyel - Somerville MA, US
Matthew Pike - Medford MA, US

International Classification:

A62C 37/00

US Classification:

169 56

Abstract:

A sprinkler head including a sprinkler body with a passage for fluid and a seal mechanism sealing the passage, and a cage member. A frangible bulb extends between the cage member and the seal. A shape memory alloy element is associated with the frangible bulb and has a first configuration that fits within, about, or abutting the bulb and a second configuration at a predetermined temperature which breaks the frangible bulb releasing the fluid through the passage.