Pumps – Three or more cylinders arranged in parallel – radial – or... – Motor driven
Patent
1976-09-29
1978-12-26
Freeh, William L.
Pumps
Three or more cylinders arranged in parallel, radial, or...
Motor driven
417426, F04B 112, F04B 2310
Patent
active
041313950
ABSTRACT:
A feeder for apparatus for ejecting a mixture of liquids, e.g. urethane foam, comprises a pair of swash plate proportioning pumps one individual to each of the liquids, e.g. resin and isocyanate, each proportioning pump being fed by a gear pump from a supply of the respective liquid. Seepage along the drive shafts of the isocyanate pumps is continuously removed by bathing them in a recirculating stream of flushing agent. The swash plate and gear pumps and flushing agent pump are all driven by a single motor from a common chain drive. The liquids are heated during passage through separate hoses to a common dispensing head or gun, by immersed coil electric resistance heaters extending lengthwise freely within the hoses. A novel control system is provided for the hose heater circuit, the adequacy of the liquid supply and other operating conditions.
REFERENCES:
patent: 1970530 (1934-08-01), West
patent: 2914219 (1959-11-01), Chianelassa
patent: 3124270 (1964-03-01), Connell
patent: 3636820 (1972-01-01), Lambeth
patent: 3818803 (1974-06-01), Scott et al.
patent: 3937015 (1969-04-01), Kubilos
Bairunas Robert A.
Commette Denis S.
Gusmer Frederick E.
Freeh William L.
Gusmer Corporation
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