Abstract: An inhalant dispenser has a cover 3 pivotally carried on a body 6. The cover has a cam arrangement for lifting a junction member 41 against the action of the spring in an inhalant can C. Lifting of the junction member cocks a breath actuated dose release mechanism. The latter includes a flap 61 in the breath path. The flap is carried on the junction member and is arranged to release a hinged member 48 by action of latches 70 on the flap and sears on the hinged member.

Abstract: A dispenser 1 has a source of medicament 2 with a can 3 and a metered dose valve 4. The outlet stem 5 of the valve is fitted to a junction block 6 in a body 7 of the dispenser to which a breath actuated dose release mechanism 8 is connected for release of the medicament through a nozzle 9. The can has an acoustic transducer 11 attached to its side wall 12, in intimate acoustic contact. An electronic package 14, comprising a detection circuit and a driver for a LCD display 15 are also mounted on the can wall, the transducer being connected to the circuit. The detection circuit is arranged to decrement a count shown on the LCD by one for every detection of noise of dispensing/metering of a dose from the can. The detection circuit is programmed to compare the spectrum of the noise with a known dose-dispensing spectrum and to decrement the counter according to the comparison.

Abstract: A dispenser has a body 201 with a mouthpiece 202 and a pivoted mouthpiece cover 203. The mouthpiece is formed as an aperture 2021 in a separate body part 2012 clipped to a main body part 2011. The mouthpiece part is cut away 2014 with respect to the medicament can 211 fitted to the body to define an air inlet exposed by the cover when this is open. The cover is pivoted about an axis 204 low in the body at the joint between the two body parts. Integrally moulded with the cover 203 is a half round shaft 2031, which carries a cam arrangement 205 comprising a pair of cam lobes 2051, 2052 and an intermediate shaft 2053. The can 211 is held in an opening 210 at the upper end of the main body part 2011 by a pair of location pins 2101 in openings 2102 in sidewalls of the body part. A junction member 217 is slidably accommodated in the body with the ribs engaging in grooves 218 in its periphery.