Patent ID: 7971798
Filing Date: 2011-07-05
Classification: F16K,G05D,Y10T

Abstract:
1. A resettable thermal pressure relief device (TPRD), comprising: a housing having a first aperture and a second aperture allowing a fluid to flow through the housing; a piston slidably mounted in the housing and movable between an open position and a closed position, the piston sealing the second aperture when the piston is in the closed position; a lever disposed in the housing and having a first position which selectively militates against the piston moving into the open position; an actuator having a temperature sensitive material adapted to expand volumetrically with an increase in temperature, wherein the actuator facilitates a movement of the lever from a first position to a second position when a desired temperature is attained to allow the piston to move to the open position; a lever spring adapted to bias the lever and one of militate against a movement of the lever from the first position and move the lever to the second position; and a guide coupled to the lever spring, wherein the lever further has a cavity that receives the guide and the lever spring and facilitates a linear movement of the lever along the guide when the lever is moved from the first position to the second position.