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US 5,071,105 AGranted
Gas torch with visual observation device
AssigneeSollac
InventorsMichel Donze, Bertrand Donze
Life of this patent
Estimating the term…
Abstract
The torch fitted with a nozzle (6) comprises a visual observation optical device having one end part coaxially inside the central gas feed pipe (7) and the other end extending outside the body (1) at the opposite end to the nozzle; the optical device being situated a specific distance from the main orifice (17) of the nozzle so that the bounds of its angle of view pass through the edges of said main orifice.
Claims7
A combustible gas torch comprising:
- (1) an elongated body having at least one gas feed pipe disposed therein with a first portion thereof extending to at least near a first end of the body and a second portion thereof extending to a combustible gas nozzle having a combustible gas outlet orifice which is coaxial with the second portion of the feed pipe;
- (2) a visually-observable optical device having:
- (a) a lens disposed in said second portion of said gas feed pipe, wherein said lens is coaxial with said orifice and is disposed from said orifice a distance sufficient that the angle of view of the lens substantially matches the area of the orifice;
- and
- (b) an optical fiber associates with said lens and extending out of said body in a gas-tight manner to a device for interpretation of light information;
- and
- (3) space between said lens and said second portion of said gas feed pipe such that the flow of the gas through the space and around the lens during operation of the torch is sufficient that contaminations produced at the nozzle during operation of the torch are prevented from travelling through said nozzle and to said lens.
4 more elements
Dependencies are inferred from the claim text.