Dispensing – With discharge assistant – Fluid pressure
Patent
1994-02-09
1997-05-20
Kashnikow, Andres
Dispensing
With discharge assistant
Fluid pressure
222397, 2224008, 222402, B65D 8314
Patent
active
056305320
ABSTRACT:
An air pump is configured as a reciprocating compressor. On a fuel tank, there is fitted a cylinder of the air pump, in which an axially displaceable piston rod, having a handle and a piston, is coaxially disposed. The piston divides the interior of the cylinder into two chambers. The lower one of these chambers, lying closer to the fuel tank, communicates with the fuel tank via a first one-way valve, which permits only the entry of air into the fuel tank. The upper one of these chambers, lying farther from the fuel tank, communicates unchecked with the atmosphere. The one-way sealing of the piston against the cylinder allows the passage of air past the piston only in the direction from the upper chamber to the lower chamber. The piston rod is provided with a coaxial duct and a second one-way valve which is opposed to the first. The two chambers are able to intercommunicate via the coaxial duct and the second one-way valve, which, from a predetermined pressure, allows air to escape to the atmosphere.
REFERENCES:
patent: 2354265 (1944-07-01), Horvath
patent: 3955720 (1976-05-01), Malone
patent: 4492320 (1985-01-01), Tada
Fritschi Isidor
Herkenne Jacques
Kashnikow Andres
Kaufman Joseph A.
Sigg AG Haushaltgerate
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