Air Flow For Fans
Original Publication Date: 1979-Aug-01
Included in the Prior Art Database: 2005-Feb-20
In machines using blowers or fans for cooling, it is essential that means be provided to identify failure of the cooling medium to prevent damage to the machines. Various ways of sensing such failures are known in the art, such as self-heated thermoswitches, self-heated thermistors, mechanical pressure switches and vane-actuated microswitches.