Measuring pressurised container contents by balancing

摘要

Apparatus for determining product quantity in a pressurised dispensing container comprises: a housing for receiving a container; a fulcrum for balancing the housing and means for adjusting relative housing and fulcrum positions. Product quantity is determinable from relative housing and fulcrum positions when balanced. Embodiments include: a longitudinal serrated strip (26 Figs. 1) and scale (29) on the housing (21) balanced on a removable mouthpiece cap (23); a graduated scale component (40 Figs. 2) having a rounded portion (46) attached to the housing and has a slide (43) with a fulcrum mounted thereon; a rotatable stand (61 Figs. 3) having arms (62) slidable in housing slots (60); a detachable stand 71 with rounded arms 72 engaging a graduated 29 housing flange; an arcuate balancing segment (80, 90 Figs. 5) with ribs forming respective fulcra attachable to the housing or the container.