Patent ID: 6244523
Filing Date: 2001-06-12
Classification: B05B,B05C,E04F,E04G

Abstract:
pressurized injector comprising:a barrel provided at one end with an opening and an outer threaded portion, and at other end with a guide tube and a pressure chamber whereby said pressure chamber contains a powdered propellant;a cap provided at one end with an outer threaded portion, and at other end with an inner threaded portion, said cap being engaged with said barrel such that said inner threaded portion of said cap is engaged with said outer threaded portion of said barrel;an injecting end provided in one end with an inclined plane, and in other end with an inner threaded portion, said injecting end being fastened with said cap such that said inner threaded portion of said injecting end is engaged with said outer threaded portion of said cap; anda piston provided with a pull rod and disposed in said barrel such that a free end of said pull rod is jutted out of said guide tube of said barrel, and that said pull rod is provided at the free end with a pull rod cover fastened therewith whereby said piston contains a liquid propellant, which is mixed with the powdered propellant contained in said pressure chamber of said barrel at the time when said pull rod is pulled in the direction away from said guide tube of said barrel, thereby resulting in the production of gas which forces said piston to move in the direction toward said injecting end of said barrel so as to eject a filling material contained in said barrel via said injecting end.