Dispensing – With discharge assistant – Actuated by pressure of or suction on material to be dispensed
Patent
1976-11-04
1978-03-21
Tollberg, Stanley H.
Dispensing
With discharge assistant
Actuated by pressure of or suction on material to be dispensed
184 7E, F16N 714
Patent
active
040798666
ABSTRACT:
A lubricating metering valve having an inlet chamber followed by a cylindrical chamber for discharge of the lubricant, a longitudinal tubular element being capable of permitting the refilling of the lower section of the discharge chamber, the element having a flange with openings therethrough to permit flow of lubricant and a longitudinal hole through the element, a sliding ring around the tubular element coupled with a lubricant discharge bushing located externally of the cylindrical wall of the tubular element, a coil spring actuating the discharge bushing upwardly, openings in the lower wall of the tubular element to permit flow into the discharge chamber, the holes being adapted to be closed by the bushing at the end of its downward stroke, a distributor-shutter element adapted for axial movement and located at the top of the valve, at its lower end the shutter element narrowing by two opposing truncated cones with a longitudinal hole adapted to be sealed by a rubber seal ring which prevents flow of lubricant during the feed stage.
REFERENCES:
patent: 3715013 (1973-02-01), Lyth et al.
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