Positive displacement injector

Details Positive displacement injector Positive displacement injector

B - Operations, Transporting

67

D

184/26

B67D 7/02 (2010.01) F16N 13/02 (2006.01) F16N 13/16 (2006.01)

Patent

CA 1210706

POSITIVE DISPLACEMENT INJECTOR ABSTRACT OF THE DISCLOSURE A positive displacement injector for automatic cen- tralized lubrication systems is constructed to include a two-piece disk-seal valve assembly that acts as a check valve and also provides seals at oppositely facing sur- faces. The assembly consists of a stiff disk sandwiched between upstream and downstream disks of a resilient seal member. Notches in the periphery of the stiff disk are normally blocked by the downstream disk to prevent upstream fluid flow through these notches, yet the periphery of the downstream disk is deflectable to permit downstream fluid flow through the notches when there is relatively high fluid pressure at the inlet port. The assembly is bodily movable so that with low fluid pressure at the inlet port this port is blocked by the upstream disk, and with high fluid pressure at the inlet port the downsteam disk blocks axial input to an outlet passage.

427499

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