US 11,913,760 B2
Portable flamethrower
Lewis Clanton, Fort Pierce, FL (US); Donald Patnaude, North Palm Beach, FL (US); and Chris Byars, Apache Junction, AZ (US)
Assigned to DP & LC HOLDINGS, LLC, North Palm Beach, FL (US)
Filed by DP & LC Holdings, LLC, North Palm Beach, FL (US)
Filed on Jul. 6, 2023, as Appl. No. 18/348,241.
Application 18/348,241 is a continuation of application No. 17/188,368, filed on Mar. 1, 2021.
Claims priority of provisional application 63/014,411, filed on Apr. 23, 2020.
Prior Publication US 2023/0349673 A1, Nov. 2, 2023
Int. Cl. F41H 9/02 (2006.01)
CPC F41H 9/02 (2013.01) 17 Claims
OG exemplary drawing
 
1. A portable flamethrower for use and transport by an individual, the flamethrower including:
a chassis;
an electrical power source;
a tank, the tank being adapted to hold a quantity of liquid fuel, said tank having a fuel inlet and a fuel outlet;
a nozzle mounted to the chassis and in flow communication with the tank;
a pump connected to the fuel outlet and the nozzle and operable to effect fuel flow from the tank to the nozzle, said pump being connected to the power source for receiving energy therefrom to effect operation of the pump;
at least one activation switch electrically connected between the power source and the pump and operable to selectively effect operation of the pump, said activation switch having a switch operator positioned for access by a user of the flamethrower;
a first shield mounted to the chassis adjacent the nozzle;
a high voltage source mounted to the chassis and electrically connected to at least one activation switch and being operable to selectively connect the high voltage source to the power source; and
spark igniter electrodes mounted to the chassis adjacent the nozzle and positioned in spaced apart relationship, providing an arc path therebetween, said electrodes being connected to the high voltage source to selectively effect an electrical arc between the electrodes, said electrodes being positioned such that fuel vapor from a stream of fuel from the nozzle will pass through an arc between the electrodes, said electrodes being electrically insulated from the chassis;
wherein the electrical power source includes a voltage sensor operably associated with the electrical power source and being operable to open a circuit between the electrical power source and the pump if a preset minimum voltage from the power source is not available for operation of the high voltage source, preventing the pump from being energized.