Fluid handling – Destructible or deformable element controlled – Heat destructible or fusible
Patent
1990-06-01
1991-04-16
Walton, George L.
Fluid handling
Destructible or deformable element controlled
Heat destructible or fusible
137 80, 1376361, 251 5, 251 9, 251263, 251334, F16K 1118, F16K 3164, F16L 5514
Patent
active
050074466
ABSTRACT:
A flow control device, such as a valve, has a valve body which has a fluid holding chamber therein. An inlet in the valve body couples the chamber to a source of pressurized fluid. An outlet in the valve body couples the chamber to downstream devices such as sprinkler heads. The outlet has an outlet opening which opens to the valve chamber. A collapsible tubing is sealingly attached at a first end to the outlet opening. The collapsible tubing has an opposite end which extends into the chamber. The opposite end of the collapsible tubing has an inlet which opens into the chamber. A mechanism is provided for blocking and unblocking the inlet of the opposite end of the collapsible tubing to cause the collapsible tubing to collapse and uncollapse to block and unblock fluid flow from the chamber through the outlet. The mechanism has a piston for insertion into and withdrawal from the inlet of the collapsible tubing to block and unblock the inlet. When the piston is inserted into the inlet of the collapsible tubing, the collapsible tubing collapses around the piston to block fluid flow from the chamber through the outlet. However, the collapsible tubing is not "pinched shut" and thus does not take on a set "pinched shut" shape. Thus, when the piston is withdrawn from the inlet, the collapsible tubing uncollapses immediately permitting fluid to flow without delay from the chamber through the outlet.
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Remote Controls, Inc.
Walton George L.
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