Pressure mechanism for spray cannister
AssigneeGreenSpense Ltd.
InventorsGadi Har-Shai, Dmitry Golom, Steven Arnautoff, Nir Lilach, Eliahu Eliachar
Life of this patent
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Abstract
A fluid dispensing mechanism for a fluid dispensing device, comprising an elastic sleeve surrounding a bag for filling with fluid for dispensing, the bag having a circumference and being folded at a plurality of folding locations around said circumference, thereby to unfold evenly under said sleeve during a filling process of pressurized filling of said bag with fluid, the mechanism further comprising an anchoring column. The bag is folded around the anchoring column.
Claims21
A fluid dispensing mechanism for a fluid dispensing device, comprising an elastic sleeve surrounding a bag for filling with fluid for dispensing, the bag having a circumference and being folded with overlapping folds at a plurality of folding locations around said circumference, thereby to unfold evenly under said sleeve during a filling process of pressurized filling of said bag with fluid, the mechanism further comprising an anchoring column, said bag being folded around said anchoring column, said folded bag having an upper end and a lower end, and both said lower end and said upper end being fixedly attached to said anchoring column, said attachment being via one member of the group comprising a heat weld, a screw cap, an overmolded cap and glue.
A method of manufacturing a fluid dispenser comprising:
- providing a bag having a height and a bag circumference;
- providing an anchoring column having a column circumference smaller than said un-folded bag circumference;
- connecting an upper end of said column to a dispensing valve;
- folding said bag with overlapping folds at a plurality of folding locations to reduce said bag circumference to substantially equal said column circumference;
- placing said bag on said column;
- clamping said folded bag at said upper end and at said lower end under upper and lower holders respectively;
- and
- fitting an elastic sleeve over said folded bag, such that on filling said bag, said bag unfolds under said sleeve evenly by opening folds at said plurality of folding locations.
Dependencies are inferred from the claim text.