Dispensing – Fluid flow discharge – Fluid flow generated by manually actuated working member
Reexamination Certificate
2006-07-25
2006-07-25
Nicolas, Frederick C. (Department: 3754)
Dispensing
Fluid flow discharge
Fluid flow generated by manually actuated working member
C222S209000, C239S318000, C239S434000
Reexamination Certificate
active
07080761
ABSTRACT:
A spray head structure capable of preventing backflow of perfume liquid comprises a spray head, a locking base, a kit, a bottle, and a compressible ball. A rolling ball is held inside a gas-supplying tube of the spray head. A cross-shaped trench is formed on one end of a gas-guiding device, and several liquid-guiding grooves are formed on the other end of the gas-guiding device. The cross-shaped trench supplies the gas with a flow channel, and it also prevents the rolling ball from blocking the channel. If the compressed compressible ball is released, the rolling ball will be attracted backward by suction force such that the rolling ball blocks the flow channel and prevents the perfume liquid from flowing into the inside of the compressible ball.
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Ing Wen Precision Ent. Co., LTD
Nicolas Frederick C.
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