Patent ID: 7507086

Claim:
A gas weed killing burner device, comprising: a main body ( 100 ) having an upper end ( 110 ) fitted with a gas inlet coupling ( 111 ) and a lower end ( 120 ) which opens out to allow an inflamed gas and air mix to escape to create a flame; a movable diffusion cone ( 200 ) located at the lower end ( 120 ), the diffusion cone ( 200 ) having a tip ( 210 ) located at least upstream from a flame creation zone to ensure the bursting of the air and gas mix; a fixed nozzle ( 121 ) located at the lower end ( 120 ) of the burner (B); a bell cover ( 400 ) coaxial to an axis of diffusion of the flame, the bell cover ( 400 ) being rotatably mounted to the fixed nozzle ( 121 ) such that the bell cover ( 400 ) is rotatable around a vertical axis of the burner (B); and wherein actuating a control rod ( 300 ) deploys or retracts the movable diffusion cone ( 200 ) so that the diameter of the base of the movable diffusion cone ( 200 ) changes during the operating of the burner (B) according to the usage of the burner (B) so that the flame takes on the deployed or retracted shape of the movable diffusion cone ( 200 ) whilst in operation.