Igniter for thermal lance
AssigneeNorabel AB
InventorRoland Brandin
Life of this patent
Estimating the term…
Abstract
An igniter is provided for slip-on attachment to the free end of a thermal lance. The igniter includes a slip-on cartridge having a frictional support cap. A priming composition (12) and a primer (13) located within the cartridge. The primer (13) is designed as a friction primer and includes a spiral wire friction element within the primer and connected to the cap. Under the pressure of oxygen introduced into the lance, the cap is forced outwardly with the wire friction element activating the primer to create ignition of the priming composition (12), and the operation of the thermal lance.
Claims12
An igniter for a coupling to the free end of a thermal lance having a passageway receiving pressurized oxygen, comprising a priming composition (12), a primer adjacent said priming composition a frictional element coupled to said primer, a mounting unit coupling said primer and said priming composition to the free end of said lance, said mounting unit having a closure element (15) coupled to said oxygen passageway and actuated by the pressure of the oxygen introduced by said lance to activate said frictional element to ignite said primer for ignition of said priming composition.
Dependencies are inferred from the claim text.