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Class Information
Number: 266/70
Name: Metallurgical apparatus > Means for cutting solid metal with heat, e.g., blowpipes > Circle cutter
Description: Device provided with means constraining the cutting means to follow an accurate path.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7611662 |
Swivel tip attachment for cutting torch |
Nov. 3, 2009 |
| 7049541 |
Cutting guide for plasma torch |
May. 23, 2006 |
| 6391248 |
Circle cutting attachment for torch |
May. 21, 2002 |
| 6113845 |
Versatile cutting torch system |
Sep. 5, 2000 |
| 6103184 |
Hand-held torch circle cutter |
Aug. 15, 2000 |
| 6073324 |
Apparatus for cutting sheet metal disc from and welding sheet metal disc to sheet metal |
Jun. 13, 2000 |
| 6022506 |
Device for cutting circular openings in pipe, vessels, and flat material |
Feb. 8, 2000 |
| 5804133 |
Motorized cutting torch attachment |
Sep. 8, 1998 |
| 5575971 |
Circle circumscriber and cutter of steel plates |
Nov. 19, 1996 |
| 5511765 |
Cutting torch attachment for facilitating cutting circular holes |
Apr. 30, 1996 |
| 5360201 |
Hole and circle torch cutting attachment |
Nov. 1, 1994 |
| 5040299 |
Base for cutting a circular plate with a gas burner |
Aug. 20, 1991 |
| 5006687 |
Method for cutting steel pipe piles |
Apr. 9, 1991 |
| 4778155 |
Plasma arc hole cutter |
Oct. 18, 1988 |
| 4695041 |
Cutting torch holder |
Sep. 22, 1987 |
| 4621792 |
Cutting tool attachment |
Nov. 11, 1986 |
| 4606528 |
Motorized hand torch with improved brake mechanism |
Aug. 19, 1986 |
| 4593888 |
Adjustable pattern |
Jun. 10, 1986 |
| 4540320 |
Self generating profile generator |
Sep. 10, 1985 |
| 4469311 |
Motorized hand torch |
Sep. 4, 1984 |
| 4456228 |
Radius attachment for automated welding and cutting torch carriages |
Jun. 26, 1984 |
| 4455015 |
Steering apparatus for an autogenous cutting torch |
Jun. 19, 1984 |
| 4448340 |
Apparatus for replacing bolster rings |
May. 15, 1984 |
| 4434015 |
Device and method for cutting circular piece parts |
Feb. 28, 1984 |
| 4411410 |
Apparatus for cutting openings in pipes |
Oct. 25, 1983 |
| 4411411 |
Cutting torch guide attachment |
Oct. 25, 1983 |
| 4372538 |
Metal cutting machine with cut piece pickup and transport magnets |
Feb. 8, 1983 |
| 4330076 |
Method for replacing bolster rings |
May. 18, 1982 |
| 4330110 |
Apparatus and method for cutting holes in steel plates |
May. 18, 1982 |
| 4319933 |
Bridge and die attachment for cutting torches |
Mar. 16, 1982 |
| 4283043 |
Cutting torch attachment |
Aug. 11, 1981 |
| 4283043 |
Cutting torch attachment |
Aug. 11, 1981 |
| 4264058 |
Truck bolster ring renewal system |
Apr. 28, 1981 |
| 4256288 |
Hole cutting apparatus |
Mar. 17, 1981 |
| 4157814 |
Cutting attachment for welding torches |
Jun. 12, 1979 |
| 4081179 |
Circle cutter |
Mar. 28, 1978 |
| 4053145 |
Cutting torch guide |
Oct. 11, 1977 |
| 4021025 |
Circle cutter |
May. 3, 1977 |
| 3944194 |
Metal cutting tool guide |
Mar. 16, 1976 |
| 3941358 |
Cutting torch guide |
Mar. 2, 1976 |
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