Dosing pump for liquids

Details Dosing pump for liquids Dosing pump for liquids

1984-06-26

1985-07-09

Freeh, William L.

Expansible chamber devices

Resilient means interposed between working member and...

417214, F16J 110, F04B 4900

Patent

active

045274630

ABSTRACT:
In volumetric dosing of liquids, equal mounts of a liquid must be added in equal time intervals to a primary flow which may consist of either liquid or gaseous substances. This is done most accurately by means of piston pumps as dosing pumps.
The dosing pump according to the invention affords simple design and reliable operation. The piston stroke is fixed by means of a collar in a limiting chamber. The compensation required to prevent double fits and compensates for wear, tolerances, etc. is obtained by an elastic length equalizer in the connecting rod. This arrangement leads to being normally represented as a rigid connection which, however, in the two end positions of the piston, when the forces rise suddenly due to the collar striking the limiters, equalizes these forces over the length.

REFERENCES:
patent: 700646 (1902-05-01), Hartness
patent: 1327272 (1920-01-01), Dellgren
patent: 2712793 (1955-07-01), Holm
patent: 2865357 (1958-12-01), Mueller et al.
patent: 3169674 (1965-02-01), Lund et al.
patent: 3545896 (1970-12-01), Zahradnik
patent: 4323333 (1982-04-01), Apter

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