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US 5,664,598 AGranted
Safety valve
OwnerMing-Don Shiehinventor
Life of this patent
Estimating the term…
Abstract
A valve includes a chamber and two inlets for supplying cold and hot water into the chamber. A membrane is secured in the chamber so as to separate the inlets from each other. Two plugs are engaged in the inlets and secured to the membrane for blocking the inlets. Two springs are engaged on the plugs for balancing the membrane and the plugs. One of the plugs is forced to block one of the inlet when no water is supplied from the other inlet, so as to prevent the users from being hurt by hot water.
Claims6
A valve comprising:
- a body including a chamber formed therein and including inlets communicating with said chamber, and including two rooms communicating with said inlets, and including an outlet communicating with said rooms for receiving water from said inlets, said inlets each including a valve seat provided therein,
- a membrane secured in said chamber so as to separate said inlets from each other,
- two plugs engaged in said inlets and secured to said membrane, said plugs being provided for engaging with said valve seats so as to block said inlets respectively,
- two biasing means engaged on said plugs and biased between said membrane and said body for balancing said membrane and said plugs, and
- a ring secured to said membrane, said ring including a bore for engaging with said plugs, said biasing means being biased between said membrane and said body for balancing said membrane and said plugs,
- water from said inlets being combined in said outlet via said rooms, a first of said plugs being forced to engage with said valve seat of a first of said inlets by water from said first inlet when no water is supplied to a second of said inlets.
3 more elements
Dependencies are inferred from the claim text.