Patent ID: 8663069
Filing Date: 2014-03-04
Classification: A63B

Abstract:
1. An adapter for a respiratory muscle endurance training device comprising: a first component defining at least one first opening positioned and adapted to communicate with an interior of a chamber; a second component rotatably coupled to said first component, said second component comprising at least one second opening positioned and adapted to communicate with an exterior of the chamber, said at least one first and second openings in combination defining an orifice adapted to provide a flow path between the interior and exterior of the chamber, wherein said first and second components are rotatable relative to each other between a plurality of positions, wherein portions of said at least one first opening and said at least one second opening overlap variable amounts such that said orifice is variable when said first and second components are rotated between said plurality of positions, wherein at least one of the first and second components comprises indicia corresponding to a size of said variable orifice.