Fluid applicator instrument
OwnerAshraf Mahfouz Abbasinventor
Life of this patent
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Abstract
This invention relates to an instrument, preferably a marking instrument, for applying a fluid to a surface and particularly, though not exclusively, to a writing pen, including a marker pen, or a brush, especially an artist's brush. Other types of brushes are contemplated, such as those for applying cleaner, mouthwash or perfume to teeth. The instrument (2) comprises a tip (6), a holder for the tip (4), a cartridge (14) containing the fluid mounted within or connectable to the holder (4), and a manually-operable spray pump arrangement (10) for repeatedly dispensing a predetermined amount of the fluid under pressure from the cartridge (14) to the tip (4) of the instrument (2). A disposable or re-fillable cartridge for the instrument is also described.
Claims34
An instrument for applying a fluid to a surface comprising a fluid-applying tip, a holder for the tip, a cartridge containing a fluid to be applied mounted within or connectable to the holder, and a manually-operable spray pump arrangement for repeatedly dispensing a predetermined amount of the fluid by manual pressure from the cartridge to the tip of the instrument.
An instrument according to any one of the preceding claims, wherein operation of the pump arrangement is arranged to transfer the fluid from the cartridge into a chamber intermediate the cartridge and the tip of the instrument, prior to a subsequent operation of the pump arrangement to dispense the fluid to the tip.
An instrument according to any one of the preceding claims, wherein the pump arrangement and the tip of the instrument are assembled into a single unit.
An instrument according to any one of the preceding claims, in the form of a marking pen.
An assembly for an instrument for applying a fluid to a surface comprising a disposable cartridge or re-fillable container containing a fluid to be applied and operatively associated therewith a manually-operable spray pump arrangement for repeatedly dispensing a predetermined amount of the fluid under pressure from the cartridge or container.
A replaceable cartridge for use in an implement for applying a fluid to a surface, the cartridge comprising:
- a primary reservoir for holding a fluid to be applied and having an outlet at one end;
- a fluid supply tube located, in use, within the primary reservoir, the supply tube being, in use, connected at one end to the outlet and having a secondary reservoir at its other end;
- wherein, when the cartridge is in a first orientation, a measured dose of the fluid can enter the secondary reservoir, and wherein, when in a second, inverted orientation, no more than the measured dose within the secondary reservoir can be delivered through the supply tube.
A refillable container for use in refilling an implement for applying a fluid to a surface, the container comprising:
- a primary reservoir for holding a fluid to be applied and having an outlet at one end;
- a fluid supply tube located, in use, within the primary reservoir, the supply tube being, in use, connected at one end to the outlet and having a secondary reservoir at its other end;
- wherein, when the container is in a first orientation, a measured dose of the fluid can enter the secondary reservoir, and wherein, when in a second, inverted orientation, no more than the measured dose within the secondary reservoir can be delivered through the supply tube.
An instrument, assembly, cartridge or container according to any one of the preceeding claims including valve means provided in the spray pump arrangement for allowing air ingress but preventing liquid egress during invertion thereof.
Dependencies are inferred from the claim text.