F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 43/067 (2006.01) A47K 5/12 (2006.01) B65D 83/76 (2006.01) F04B 7/02 (2006.01) F04B 9/14 (2006.01) F04B 53/10 (2006.01)
Patent
CA 2534182
A pump device for fluid dispensers is provided whose chamber is partitioned into a pressure room and a fluid room. A piston element is engaged inside the pressure room by an actuating rod to push the piston element downward, or by a resilient element beneath the piston element to restore the piston element back to the top. An air valve element at the bottom of the piston element automatically opens or closes the induction of air to the pressure room when the piston element is moved upward or downward. The fluid room is dedicated to the passage of the fluid. A normally closed fluid valve element is provided at the bottom of the fluid room. When the fluid in the container device is pressurized, the fluid pushes open the fluid valve element, flows into the fluid room and then out of the spout of the pump device.
Macpherson Leslie & Tyerman Llp
Tsai Chang-Keng
LandOfFree
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