Support structure for plasma arc cutting torch shield
AssigneeDeere & Company
InventorRichard W. Hirst
Life of this patent
Estimating the term…
Abstract
A shield for a plasma arc torch is carried by a support mounted so as to be easily disassembled, to permit inspection and/or servicing of components surrounded by the shield by merely lifting up on the support to disengage a pair of projections at the opposite ends thereof from a pair of receptacles fixed to the frame of the machine which supports the torch.
Claims10
In a machine including a frame supporting a plasma arc cutting torch having a downwardly projecting nozzle and a shielding structure including a shield supported in surrounding relationship to the nozzle, an improved shield support structure, comprising:
- a pair of upwardly opening receptacles mounted on the frame in spaced relationship to each other at respective locations elevated above and equidistant from the torch nozzle;
- an elongate shield holder having downwardly extending projections at its opposite ends;
- said projections being respectively releasably received in the pair of upwardly opening receptacles;
- said shield holder being located approximately at the level of the receptacles and having an arcuate portion extending at least 180.degree. about the torch nozzle;
- and a plasma arc shield secured to the shield holder in depending relationship thereto and having a lower edge located no higher than the bottom of the nozzle.
In a machine having a frame supporting a plasma arc torch having a downwardly projecting nozzle and supporting a shielding structure including a plasma arc shield surrounding the nozzle, an improved shield support structure, comprising:
- a horizontally disposed elongate shield holder having opposite end portions respectively extending tangent to an imaginary vertical cylinder surrounding the nozzle and being joined together by an arcuate intermediate portion located on said cylinder;
- telescopic joint means respectively interconnecting the opposite ends of the shield holder to the frame for permitting the holder to be disconnected from the frame by lifting up on the holder;
- and a plasma arc shield suspended from the holder and having a lower horizontal edge located no higher than the bottom of the nozzle.
Dependencies are inferred from the claim text.