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Inhalation apparatus

  • US 6,338,338 B1
  • Filed: 12/08/1999
  • Issued: 01/15/2002
  • Est. Priority Date: 03/14/1997
  • Status: Expired due to Fees
First Claim
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1. An inhalation apparatus for dispensing a product comprising a housing, an end cap seated axially slidable relative to the housing and a collar in one or other of the end cap, or housing, said housing comprising a portion adapted to receive a pressurised dispensing container and being connected to a mouthpiece, and a duct communicating with the container receiving portion for conveyance of product towards the mouthpiece;

  • said end cap comprising a portion for engaging a pressurised dispensing container;

    said collar comprising an inwardly directed rim;

    one of said end cap and said housing including an outwardly directed flange which fits within said rim;

    said end cap being movable from a first position in which said rim and flange have an axial overlap and there is no or a minimal flow of air through said housing to a second position in which there is a maximum flow of air, the air flow being created by a user applying suction to the mouthpiece, wherein the collar is slidably moveable relative to its seat in the end cap or housing on a first actuation of the inhalation apparatus to axially position the collar relative to the end cap or housing to accommodate variations in the axial length of the valve stem of a pressurised dispensing container received, in use, in the housing.

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