Fluid dispenser
AssigneeGlaxo Group Limited
InventorsStanley Bonney, Louis Della-Porta, Paul Rand
Life of this patent
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Abstract
A fluid dispenser for dispensing a metered volume of a fluid product having a storage chamber for storing the fluid product, a dispensing outlet through which the fluid product is dispensable from the dispenser, a metering chamber having an outlet which places the metering chamber in fluid communication with the dispensing outlet; a plurality of transfer openings through which the fluid product is transferable between the storage and metering chambers; and a boundary wall structure which is cyclically movable between a first configuration, in which the transfer openings are open, and a second configuration, in which the transfer openings are closed is described.
Claims47
A fluid dispenser for dispensing a metered volume of a fluid product having:
- (a) a storage chamber for storing the fluid product;
- (b) a dispensing outlet through which the fluid product is dispensable from the dispenser;
- (c) a metering chamber having:
- (i) an order which places the metering chamber in fluid communication with the dispensing outlet;
- (ii) a plurality of transfer openings through which the fluid product is transferable between the storage and metering chambers;
- and
- (iii) a boundary wall structure which is cyclically movable between a first configuration, in which the transfer openings are open, and a second configuration, in which the transfer openings are closed, each cycle of movement which commences at, and ends in, the second configuration resulting in a metered volume of the fluid product being transferred from the storage chamber to the metering chamber via the transfer openings and dispensed from the dispensing outlet via the outlet;
- and
- (d) an actuation mechanism actuable by a user of the dispenser to cause a cycle of movement of the boundary wall structure, the actuation mechanism adapted so as to dispose the boundary wall structure in the second configuration at the end of each cycle of movement caused thereby.
A fluid dispenser for dispensing a metered volume of a fluid product having:
- (a) a storage chamber for storing the fluid product;
- (b) a dispensing outlet through which the fluid product is dispensable from the dispenser;
- (c) a metering chamber having:
- (i) an outlet which places the metering chamber in fluid communication with the dispensing outlet;
- (ii) a plurality of transfer openings through which the fluid product is transferable between the storage and metering chambers;
- and
- (iii) a boundary wall structure which is cyclically movable between a first configuration and a second configuration, each cycle of movement resulting in an excess volume of the fluid product, comprising the metered volume and a surplus volume, being transferred from the storage chamber to the metering chamber via the transfer openings and the metered volume being dispensed from the dispensing outlet via the outlet;
- and
- (d) a bleed arrangement adapted to bleed the surplus volume from the metering chamber so that only the metered volume is dispensed from the dispenser.
47-52. (canceled)
Dependencies are inferred from the claim text.