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US 9,933,158 B2Granted
Underwater torch
AssigneeBroco, Inc.
InventorsDavid Dean McComb, George Ray Hirvela
Life of this patent
Estimating the term…
Abstract
A underwater cutting torch having a control valve assembly, a check valve assembly and a torch head all positioned within a housing. The control valve assembly and check valve assembly include a passageway for gasses to flow that includes a coupler formed of PTFE material to inhibit combustion within the handle of the underwater cutting torch.
Claims36
An underwater torch comprising:
- a housing that has a handle and a nozzle, wherein the interior of the housing defines a passageway for gasses to flow;
- a valve lever attached to the housing having a first position and a second position;
- a control valve coupled to the valve lever wherein the control valve is opened when the valve lever is in the first position allowing gasses to flow through a passageway in the housing and wherein gasses are inhibited from flowing when the lever is in a second position;
- a non-return valve coupled to the housing having an open position wherein gas flows through the non-return valve and closed position so as to inhibit flow of hot gasses from passing through the nozzle end into the torch in the event of a flash back and
- a non-conductive coupler, separate from the housing and positioned within the housing interposed between the control valve and the non-return valve, wherein the coupler is formed of a substantially non-combustible material and forms a passageway whereby gas is provided to the torch head via the control valve and the check valve wherein the non-conductive coupler electrically isolates the control valve and the valve lever from the torch head that receives electrical current from a wire.
2 more elements
An underwater torch comprising:
- a housing that has a handle and a nozzle wherein the interior of the housing defines a passageway for gasses to flow and an electrical passageway through the handle;
- a wire positioned within the electrical passageway;
- a torch head positioned within the housing that receives the wire and the gasses delivered via the gas flow and electrical passageway and produces an arc that, in the presence of gas, ignites a fuel rod;
- a check valve assembly positioned within the housing having an open position wherein gas flows through the check valve and closed position that inhibits the flow of gas or combustions back into the handle portion of the housing from the torch head;
- a control valve assembly having a lever wherein the control valve assembly allows gas to flow to the torch head in a first position and inhibits gas from flowing in a second position;
- and
- a non-conductive coupler, separate from the housing and positioned within the housing interposed between the control valve assembly and the check valve assembly, wherein the coupler is formed of a substantially non-combustible material and forms a passageway whereby gas is provided to the torch head via the control valve assembly and the check valve assembly wherein the non-conductive coupler electrically isolates the control valve assembly and the lever from the torch head that receives electrical current from a wire.
4 more elements
Dependencies are inferred from the claim text.