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US 8,893,931 B2Granted
Foam dispenser
AssigneeYoshino Kogyosho Co., Ltd.
InventorHiroshi Mizushima
Life of this patent
Estimating the term…
Abstract
Provided is a foam dispenser in which upward and downward displacement of an actuator causes a content liquid within a liquid cylinder and air within an air cylinder to be mixed and foamed, such that the foam so generated is dispensed from an outlet of a dispenser head. The dispenser head has a structure with a minimized thickness to thereby increase the dispensing amount. The dispenser head includes two members, i.e., a first member and a second member, that have special configuration for allowing the two members to be easily removed from a die and formed in a small thickness.
Claims12
A foam dispenser, comprising:
- a cylinder member that includes:
- an upper end portion adapted to be secured to a placing cap fitted over an outer circumference of a neck of a container body so that the cylinder member is suspended in the container body;
- a large-diameter air cylinder;
- and a small-diameter liquid cylinder provided concentrically with and below the large-diameter air cylinder;
- and
- an actuator that includes:
- a stem;
- a liquid piston protruding from a lower portion of an outer circumference of the stem and adapted to slide in the liquid cylinder;
- an air piston linked to the outer circumference of the stem and adapted to slide in the air cylinder;
- and a dispenser head fitted over an upper end of the stem, the actuator being urged upward and adapted to be displaceable upward and downward such that the upward and the downward displacement of the actuator causes a liquid within the liquid cylinder and air within the air cylinder to be mixed and foamed to be dispensed as a foam from an outlet of the dispenser head, wherein
- the dispenser head comprises two members in the form of a first member and a second member,
- the first member including:
- a top plate;
- a longitudinal tube suspending from a middle portion of a back surface of the top plate and including a lower portion fitted around an outer circumference of an upper portion of the stem;
- and a nozzle provided on the longitudinal tube to protrude forward, the nozzle including an open base end whose top portion in part constitutes the top plate, and
- the second member including:
- a ring-shaped top plate portion;
- a vertical wall portion suspending from an outer circumference of the top plate portion;
- a circumferential wall portion suspending from an inner circumference of the top plate portion;
- a first fitting recess provided in a front portion of the top wall portion and the vertical wall portion;
- and a second fitting recess provided along the inner circumference of the top plate portion that is in contiguity with the first fitting recess, the first and the second member being integrated by fitting the base end of the nozzle to the first fitting recess and fitting an outer circumference of the top plate to the second fitting recess.
18 more elements
Dependencies are inferred from the claim text.