초록 ▼

A compact, automatic mechanical fluid shut-off device which can detect a sustained leak in a pipe as well as a pipe burst and automatically shuts off fluid flow in the pipe. The device is detachable, easy to install, and easy to retrofit into existing pipes. The device employs a unique combination o

A compact, automatic mechanical fluid shut-off device which can detect a sustained leak in a pipe as well as a pipe burst and automatically shuts off fluid flow in the pipe. The device is detachable, easy to install, and easy to retrofit into existing pipes. The device employs a unique combination of bias mechanism and fluid flow channels to achieve an automated method of stopping a fluid flow when there is an abnormal fluid flow in the pipe due to pipe burst or sustained leak.

대표청구항 ▼

[ What is claimed is:] [1.] An automatic shut-off safety device which stops a fluid flow through at least a portion of a fluid delivery system when abnormal fluid flow occurs, said safety device comprising:a conduit including an influent port and an effluent port adapted to be installed within the f

[ What is claimed is:] [1.] An automatic shut-off safety device which stops a fluid flow through at least a portion of a fluid delivery system when abnormal fluid flow occurs, said safety device comprising:a conduit including an influent port and an effluent port adapted to be installed within the fluid delivery system;a valve positioned between said influent and effluent port of said conduit and arranged to selectively block fluid flow through said conduit;a housing comprising a control chamber in which a movable partition is enclosed, said movable partition dividing said control chamber into at least first and second compartments separated by said movable partition, said first compartment being in fluid communication with said conduit through an inlet opening upstream of said valve and through an outlet opening downstream of said valve, said inlet opening having a larger effective cross-sectional flow area than that of said outlet opening;a first biasing member disposed inside said first compartment and coupled between said valve and said movable partition; anda second biasing member disposed inside said second compartment and coupled between said movable partition and said housing.