Patent ID: 8955762
Filing Date: 2015-02-17
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, the first aperture providing an access to reset the device after the fluid flow, wherein a hinge plate is disposed on 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 partially disposed in the housing and partially disposed outside of the housing, the lever having a first position which selectively militates against the piston moving into the open position and a second position which selectively allows the piston to move into the open position, the lever pivotable between the first position and the second position about a pivot axis of a hinge pin, the hinge pin disposed outside of the housing, the pivot axis oriented substantially parallel with an axis along which the piston moves between the open position and the closed position, the lever disposed through a housing opening, a portion of the lever outside of the housing covered by the hinge plate; a lever spring adapted to bias the lever and selectively militate against a movement of the lever from the first position; and an actuator having a temperature sensitive material adapted to expand volumetrically with an increase in temperature, wherein the actuator moves the lever from the first position to the second position when a desired temperature is attained to allow the piston to move to the open position.