US 10,588,722 B2Granted

Multi-chemistry dispenser

AssigneeColgate-Palmolive Company

InventorsScott Demarest, Jo Fleming, David Neese, Michael Gordon, David Berardelli

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Abstract

A dispenser for dispensing a liquid such as a tooth whitening gel can include a plunger and a housing having a first chamber that receives a first arm of the plunger and a second chamber that receives a second arm of the plunger. The housing can further include a first channel in fluid communication with the first chamber, a second channel in fluid communication with the second chamber, and a third channel formed at an intersection of the first and second channels. The housing can further include a static mixer than mixes a first liquid from the first chamber with a second liquid from the second chamber. The plunger may be disposed along a first axis and the third channel may be disposed along a second axis that intersects the first axis at an angle of between 10° and 170°.

Claims18

Dependent claims

A dispenser, comprising:

a plunger comprising a first arm, a second arm, and a channel that spaces the first arm from the second arm, wherein the plunger oriented to extend along a first axis;
a housing that defines a first chamber, a second chamber, a wall that separates the first chamber from the second chamber, a first channel in fluid communication with the first chamber, a second channel in fluid communication with the second chamber, and a third channel, wherein:
the first channel and the second channel intersect to connect with the third channel;
and
the third channel is disposed along a second axis that intersects the first axis at an angle of from 10° to 170°;
a nozzle at an end of the third channel;
and
a locking mechanism that prevents the plunger from being depressed prior to unlocking of the locking mechanism, wherein the locking mechanism comprises a slot within the plunger and a removable tab inserted into the slot, wherein the locking mechanism prevents the plunger from being depressed prior to removal of the removable tab from the slot.

5 more elements

A dispenser for a tooth whitening solution, comprising:

a housing defining a first chamber, a second chamber, and an applicator;
a first liquid disposed within the first chamber and a second liquid disposed within the second chamber;
a plunger comprising a first arm positioned to move within the first chamber and a second arm positioned to move within the second chamber, wherein the plunger is disposed along a first axis;
a first channel defined by the applicator and positioned to receive the first liquid from the first chamber;
a second channel defined by the applicator and positioned to receive the second liquid from the second chamber, wherein the first channel and the second channel are connected at an intersection;
a third channel defined by the applicator, wherein the third channel is in fluid communication with the first channel and the second channel at the intersection and the third channel is disposed along a second axis that intersects the first axis at an angle of between 10° and 170°;
a nozzle at an end of the applicator and at an end of the third channel;
and
a locking mechanism comprising a slot within the plunger and a removable tab that is inserted into the slot, wherein the locking mechanism prevents the plunger from being depressed prior to removal of the removable tab from the slot.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/753,243Filed 19 Aug 2015
Published: US 2019/0015180 A117 Jan 2019
Granted: 17 Mar 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61C 9/0026
Impression cups, i.e. impression trays; Impression methods: syringes or guns for injecting impression material; Mixing impression material for…
A61C 5/62
Devices specially adapted for pressing or mixing capping or filling materials, e.g. amalgam presses: applicators, e.g. syringes or guns
A61C 5/64
Applicators, e.g. syringes or guns: for multi-component compositions
A61C 19/066
Medicament applicators for teeth or gums, e.g. treatment with fluorides: bleaching devices; Whitening agent applicators for teeth, e.g. trays or…