Patent ID: 8529249

Claim:
A flame holder system, comprising: A plurality of different-length catch pins adapted to be coupled to an outboard end of a torch body transporting combustible gases to the outboard end during a torch operation, each of said catch pins extending radially outward from the torch body; a flame holder having an interior cavity extending therethrough from a first end to a second end thereof to define an inner wall with said first end adapted to fit over the outboard end of the torch body, said flame holder having a plurality of different-depth grooves formed in said inner wall, each of said grooves corresponding in depth and position to one of said catch pins, each of said grooves-starting at said first end and shaped to define at least two turns, wherein each said at least two turns is 90° such that each said groove is substantially U-shaped with a first segment having an open end and a final segment extending shorter than the first segment, and the first and final segments of each said groove being substantially parallel to a center line of said flame holder, each of said grooves sized to receive only a particular one of said catch pins therein when said flame holder is fitted over the outboard end of the torch body; and a spring-loaded stop including a spring disposed between said spring-loaded stop and said catch pins and adapted to be coupled to the torch body for engaging said first end of said flame holder fitted over the outboard end of the torch body, and wherein the final segment of each of said grooves of said flame holder engages only a particular one of said catch pins when said spring applies a force axially to said flame holder to thereby retain said flame holder on the torch body.