FIELD: mechanical engineering.
SUBSTANCE: invention relates to a pump assembly, as well as to a container having a content discharge function. In the pump assembly, casing (32) of the inner cylinder forms cylindrical chamber (S1), and annular space (S2) is formed between casing (33) of the outer cylinder and casing (32) of the inner cylinder. Annular chamber (S3) is formed between wall (13) of outer cylinder and wall (12) of inner cylinder of built-in element (1). Connecting part lower wall (22) is located in cylindrical chamber (S1), connecting part side wall (23) is in sliding sealing contact with wall inner surface (32n), and piston part (24) is located and is in sliding sealing contact with each of outer surface (12u) and inner surface (13n). Built-in element (1) is movable from lower position (PL) to upper position (PH).
EFFECT: providing the possibility of light pressing of the pressure rod to the bottom, providing at the same time the rebound of the pressure rod without the need to use a spring.
10 cl, 21 dwg
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