Abstract: A manually actuated pump type fluid dispenser has a casing (118) defining an internal cavity and a pump member (101) at least partly located in the cavity. The pump member has a central core (101)a and first and second seal members (101b, 101c) projecting radially outwardly of the core and spaced in an axial direction of the core for contact with the casing to define a pump chamber within the cavity. A region (112) of the core between the first and second seal members is resiliently deformable from an initial resiliently biased configuration in which the first and second seal members are axially spaced by a first amount and an axially compressed configuration in which the seal members are spaced by a second amount which is less than the first amount to reduce the volume of the pump chamber.

Abstract: A manual pump fluid dispenser has a base (112) and a dispensing cap (114) with a dispenser outlet (144?) mounted to the base. Insert (116) is mounted between the base and the cap to define at least one pump chamber (122, 123). The insert engages with the base to define an inlet through which a liquid can be drawn into the at least one pump chamber from a liquid source. The insert has a central core (176) and a resiliently flexible upper diaphragm member (184) projecting upwardly and radially outwardly from the core for contact with the cap to define the at least one pump chamber. The insert is movable between an initial resiliently biased configuration in which the volume of the at least one pump chamber (122, 123) is at a maximum and a deformed configuration in which the volume of the at least one pump chamber is at a minimum, in the deformed configuration, the upper diaphragm (184) is at least partially folded down about itself and/or the core. Other aspects of the dispenser are described and claimed.