Dispensers for dispensing microcapsules

Patent metadata

Field	Value
Publication number	US-10086392-B2
Application number	US-201715672389-A
Country	US
Kind code	B2
Filing date	Aug 9, 2017
Priority date	Sep 9, 2015
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A dispenser for applying at least two compositions, the dispenser including at least two reservoirs for storing the at least two compositions separately, at least two pumps for pumping the at least two compositions, which pumps have different strokes, an exit orifice, and an actuator assembly. The difference between the first stroke and the second stroke is accommodated through flexure of a flexing member in the actuator assembly. The first composition includes microcapsules and the second composition includes a volatile solvent.

First claim

What is claimed is:

1. A method of dispensing a volatile solvent and microcapsules stored in separate reservoirs, comprising the steps of:
providing a first reservoir comprising a first pump and first composition and a second reservoir comprising a second pump and a second composition, one of the compositions comprising a plurality of microcapsules and the other a volatile solvent, each pump having a respective, different stroke; and
actuating a flexing member in one phase of operation to drive the first pump through a portion of its stroke whilst simultaneously driving the second pump through the entirety of its stroke and in another phase of operation to drive the first pump through another portion of its stroke,
wherein the flexing member remains in a rest configuration during said one phase and moves resiliently to a flexed configuration during said another phase.

2. The method of claim 1 , wherein the first composition comprises a volatile solvent such that said one phase of operation dispenses substantially a mixture of microcapsules and volatile solvent and said other phase of operation dispenses substantially volatile solvent.

3. The method of claim 1 , wherein the extent of flexure in said flexed configuration of the flexing member measured in a direction parallel to said strokes is from 0.1 mm to 5 mm, more preferably from 0.5 mm to 2 mm still more preferably from 0.7 mm to 1.3 mm.

4. A method of providing a longer lasting fragrance, the method comprising spraying the first and second composition according to the method of claim 1 .

Assignees

• Procter & Gamble

Inventors

• Burrowes Lee
• Connolly William John Cleveland
• Masters Andrew Graham
• Richardson James Samuel

Classifications

• B05B11/1047 Primary

  the pump being preassembled as an independent unit before being mounted on the container · CPC title

• B05B11/1084

  each liquid or other fluent material being pumped by a separate pump · CPC title

• B05B11/1083

  in adjustable proportion · CPC title

• B01F5/0057

  Operations & Transport · mapped topic

• A45D34/04

  Appliances specially adapted for applying liquid, e.g. using roller or ball · CPC title