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US 7,551,420 B2Granted
Retractable igniter
AssigneePetroleo Brasileiro S.A. - Petrobras
InventorsEmanoel De Oliveira Cerqueira, Edson Lino Dos Santos
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Abstract
A retractable igniter having a safety mechanism to retract the source of ignition during an inactive period, avoiding unnecessary contact with said source of ignition is described, such igniter comprises: an ignition chamber, an electrode, an electrical high voltage assembly, an external pipe, an internal pipe and an activation lever.
Claims6
A retractable igniter for igniting a combustible source, comprising:
- a) an ignition chamber, retractable, upper ending an internal pipe with an aperture sized to be exposed to a combustible environment at a time of igniting the combustible source;
- b) an electrode, surrounded by an insulating empty space, wrapped in an electrical insulating block, with a bottom insulating terminal, and ended in an electric terminal;
- c) an electrical high voltage assembly, inside an insulating box and connected to the electric terminal via an electric cable;
- d) an internal pipe, encasing the electrode for displacement at the time of igniting said combustible source;
- e) an external pipe, encasing the internal pipe for protecting the internal pipe;
- and
- f) an activation lever, limiting the displacement of the internal pipe, for exposing the electrode within the ignition chamber at the time of igniting said combustible source.
4 more elements
Dependencies are inferred from the claim text.