Portable liquid sprayer, particularly for the treatment of plant

Machine element or mechanism – Elements – Pitmans and connecting rods

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G05G 100

Patent

active

050054406

ABSTRACT:
A piston pump has a piston rod comprising a casting with a cross-section of external circular shape and having at least two longitudinal, parallel open grooves each of a predetermined depth such that each groove extends beyond an axial plane lying perpendicular to a median plane of the rod.

REFERENCES:
patent: 2985359 (1961-05-01), Hanje
patent: 3709409 (1973-01-01), Collins
patent: 3901449 (1975-08-01), Bochmann
patent: 4192464 (1980-03-01), Chow

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