F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
F04B 53/14 (2006.01) B25D 17/26 (2006.01) F04B 13/00 (2006.01) F04B 19/06 (2006.01) F04B 53/02 (2006.01)
Patent
CA 2280423
A single-piece piston used in a pneumatically- activated pump or other metering device for metering predetermined amounts of liquids. The piston is disposed within a metering device body chamber. The piston includes a head portion and a cicumferentially-disposed channel for containing a sealing member. An adjacent stem section includes means for providing a fluid-flow connection with the angled channel. Lateral movement of the piston causes the sealing member to shift and block and unblock the fluid- flow connection means, allowing liquid to flow out the head of the piston's grooved end and to an adjacent pump chamber. The piston operates in association with an assembly for regulating the amount of liquid metered by the lubricator, a valve assembly for evacuating the liquid from the pump chamber into an outlet fitting, and a mechanism for regulating the flow of air into the outlet fitting to atomize the liquid. The piston operation can be calibrated for precise liquid metering.
Oil-Rite Corporation
Smart & Biggar
LandOfFree
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