SPRING-POWERED DISPENSING DEVICE

摘要

A device is described for dispensing a material or article, comprising a dispensing member which moves under the force of a spring providing an energy store. A damping arrangement employing a viscous damping medium such as grease is used to damp recoil during dispensing. In particular, such a damping arrangement is shown applied to a needleless injector operating by impact on dispensing piston.