Patent ID: 7793686
Filing Date: 2010-09-14
Classification: F17C,Y10T

Abstract:
1. An overpressure safety apparatus of a gas fuel container having a container body and a mounting cap mounted on a top of the container, the safety apparatus comprising: a main housing coupled to the mounting cap, the main housing having an elbow-shaped gas introducing passage; a valve stem disposed in the main housing through the mounting cap and biased by a first spring disposed in the main housing, the valve stem being provided with an orifice; an opening/closing seal inserted between a top of the main housing and the mounting cap to selectively open/close the orifice of the valve stem; a sub-housing connected to a bottom of the main housing, the sub-housing having a branch line communicating with the gas introducing passage and a receiving cavity with a bottom communicating with the branch line and a top communicating with an exhausting hole formed on the mounting cap; and a safety valve disposed in the receiving cavity to selectively open the branch line in response to variation of internal pressure of the container, wherein the mounting cap is provided with a seating guide step for guiding a fitment of an upper portion of the sub-housing to the mounting cap.