Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1999-06-18
2000-06-13
Hofsass, Jeffrey A.
Communications: electrical
Condition responsive indicating system
Specific condition
340584, 340573, 340590, 340578, G08B 1700
Patent
active
060754451
ABSTRACT:
A high-temperature warning indicator is provided for attachment to a firefighter's helmet. In a preferred embodiment of the invention, the indicator is in the form of a dual-color LED mounted in the tip of a highly insulated, lightweight housing. A microprocessor located within the housing and coupled to a temperature sensor activates the light, changes it from solid to flashing modes, and changes the color of the light as various temperature/time thresholds are reached. A clamp or similar mounting device is provided for securing the device to the brim of the firefighter's helmet.
REFERENCES:
patent: 3201771 (1965-08-01), Proulx
patent: 3927571 (1975-12-01), Athey
patent: 5200736 (1993-04-01), Coombs et al.
patent: 5329637 (1994-07-01), Walker
patent: 5570077 (1996-10-01), Swieboda
Athanasiades Neocles G.
McLoughlin John E.
Paris Joseph Raymond
Toh Kiam Meng
Heim Louise S.
Hofsass Jeffrey A.
Nguyen Hung
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