Patent ID: 9248948
Filing Date: 2016-02-02
CPC Classification: B65D,G01F

Claim Text:
1. A dispensing device comprising a cylinder, a piston disposed in said cylinder and moveable therein to perform a priming stroke to draw a fluid into said cylinder and a dispensing stroke to pump said fluid from said cylinder, a first spring device biasing said piston to perform said priming stroke at a predetermined rate, and an operating plunger mounted for movement on said dispensing device along a path and operatively connectable to said piston to drive said piston to perform said dispensing stroke, in which said operating plunger comprises an engagement surface and is moveable between an engaged position in which said engagement surface is operatively connected to said piston and movement of said operating plunger on said dispensing device along said path is transmitted to said piston, and a disengaged position in which said engagement surface is operatively disconnected from said piston and movement of said operating plunger on said dispensing device along said path is independent of said piston, and in which said engagement surface is positioned such that movement of said operating plunger on said dispensing device between said engaged and disengaged positions is in a different direction to movement along said path.