Tamper-evident plunger-hold-down attachment for pump dispenser
AssigneeOwens-Illinois Closure Inc.
InventorLeonora M. Durliat
Life of this patent
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Abstract
The attachment comprises a cylinder-embracing support portion at least partly encircling the upper end of the pump cylinder and having openings therein receiving hooks on the cylinder. Unitary with the support portion is a plunger hold-down portion which engages the upper end of the actuator portion of the plunger. The attachment has a tamper-evident frangible zone located between the cylinder-embracing support portion and the engagement with the actuator portion.
Claims16
A fluid dispensing pump having a container cap for mounting the pump on the neck of a container of fluid to be dispensed, the pump comprising a cylinder extending through the cap and rotatably secured thereto, the cylinder having spaced outward hooks at the upper end thereof, reciprocable hollow plunger means projecting into the cylinder and having at its upper end an actuator portion formed with a discharge outlet through which fluid is expelled upon reciprocation of the plunger means, a tamper-evident attachment comprising a cylinder-embracing support portion at least partly encircling the cylinder and having openings therein receiving the hooks respectively, and a plunger means hold-down portion unitary with the cylinder-embracing support portion and extending upward therefrom and engaging the actuator portion and holding the plunger means down, the plunger means hold-down portion having a frangible zone located between the cylinder-embracing support portion and the engagement with the actuator portion.
A unitary tamper-evident attachment for a pump dispenser defined by a cylinder having outward hooks at the upper end thereof and plunger means in the cylinder, the attachment comprising a cylinder-embracing support portion having openings adapted to receive respectively the hooks to mount the attachment on the upper end of the cylinder and a plunger means hold-down portion adapted to engage the plunger means and hold it down in the cylinder, the attachment being formed with a frangible zone by which at least a part of the attachment may be broken away from the dispenser to free the plunger means.
Dependencies are inferred from the claim text.