Dispensing – Plural sources – compartment – containers and/or spaced jacket – With discharge assistant for each source
Patent
1981-01-21
1984-02-21
Rolla, Joseph J.
Dispensing
Plural sources, compartment, containers and/or spaced jacket
With discharge assistant for each source
222263, 239398, B67D 552
Patent
active
044324707
ABSTRACT:
A portable apparatus for mixing and dispensing interactive liquid components (such as epoxy resins and catalysts) which utilizes reciprocable positive displacement pumps which are mechanically connected for simultaneous pumping and filling movement, there being a common single acting selectively adjustable drive for effecting only output pumping movement at preselected output pressure, and the pressure exerted by the liquid components themselves are required to hydraulically effect the filling movement, with the amount of hydraulic filling pressure which can be exerted by one of the component liquids being specifically regulated to be less than that required to effect filling movement. This insures maintenance of precise ratio mixing since the filling movement requires exertion of hydraulic filling pressure by both of the component liquids thus assuring precision ratio pump filling at all parts of the filling cycle independent of varying temperature dependent viscosity of the liquids. The apparatus also features flow control operating on one of the pump output lines which is independent of pressure control of the drive means to provide selectively controllable flow and pressure at the dispensing head. The flow control in one output line controls flow through the other output line by mechanical connection of the pumps which insures output simultaneity of both flow amounts and pressures. The apparatus is for single operator use, wheeled, vertically elongated, tiltable and fits through a standard twenty-two inch diameter manhole. The moving parts are protected from dirty environments by placing same within a separate housing chamber.
REFERENCES:
patent: 3474965 (1969-10-01), Coleman
patent: 3814289 (1974-06-01), Robbins
patent: 3908862 (1975-09-01), Chandra et al.
patent: 4032044 (1977-06-01), Flynn et al.
patent: 4228924 (1980-10-01), Gilbert
Noland Kenneth
Otto Engineering, Inc.
Rolla Joseph J.
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