Patent ID: 8316882
Filing Date: 2012-11-27
Classification: F16K,Y10T

Abstract:
1. A mechanical fuse to prevent a flow of a fluid comprising: a pipe having an inner surface and defining a cavity therein for carrying the fluid from a first portion of the pipe to a second portion of the pipe; a hinge positioned in the cavity of the pipe and coupled to the inner surface of the pipe; a flap positioned in the cavity of the pipe and coupled to the hinge, the flap having an open position for allowing the flow of the fluid from the first portion of the pipe to the second portion of the pipe and a closed position for preventing the flow of the fluid from the first portion of the pipe to the second portion of the pipe; and a spring positioned between the flap and the inner surface of the pipe, with the spring coupled directly to the inner surface of the pipe and coupled to the flap, the spring configured to allow the flap to move from the open position to the closed position when a pressure difference between a pressure in the first portion of the pipe and a pressure in the second portion of the pipe is above a pressure threshold.