CARTRIDGE DISPENSER FOR LIQUID OR SEMI-LIQUID MATERIALS

摘要

A dispenser for a fluid material includes a handle portion and a cartridge having the material to be dispensed. The cartridge is easily mounted to the handle portion or removed, whereby the handle portion may be used with a variety of cartridges, each of which may contain a selected material. The handle portion includes a plunger that is moved linearly by actuation of a trigger mechanism, which is engaged by a user's finger. The trigger mechanism is configured to release pressure applied to the plunger quickly upon release of pressure on the trigger and to allow the plunger to move away from the cartridge to ensure release of pressure in the material to be dispensed to prevent dripping.

主权项

1. A dispenser for fluid materials comprising:
a handle portion for removably receiving a cartridge containing said fluid materials, said handle comprising a mount configured to receive one end of said cartridge and support said cartridge in an orientation extending forwardly of said handle portion such that said cartridge can be rotated about a longitudinal axis of said cartridge, a plunger mounted for linear motion along said longitudinal axis of said cartridge, and a trigger mechanism for advancing said plunger into said cartridge to expel said fluid materials, said trigger mechanism comprising a trigger positioned to be engaged and actuated by a user's finger and a gripper mechanism connected to said trigger to engage said plunger in response to application of force to said trigger by said user, wherein said gripper mechanism engages said plunger upon application of pressure to said trigger and disengages completely from said plunger to allow said plunger to move away from said cartridge upon release of pressure from said trigger.