Plasma torch head, plasma torch shaft and plasma torch
First Claim
Patent Images
1. A plasma torch head comprising:
- at least one fluid passage, an electrode, a nozzle, a current conductor and a bearing surface on a bearing side, said torch head having on said bearing side a first cylinder wall with an outer surface and an annular surface, said first cylinder wall having an external diameter of D21a, said outer surface having nVer similar radial indentations and nVor similar radial projections provided peripherally thereon where nVer, nVor are ≧
0 and nVer+nVor=n≧
5, a quantity n combined radial indentations and radial projections, and at least five angles at the center α
, β
, γ
, δ
, and ε
;
where n=5, the sum of two adjacent angles at the center among α and
β
,β and
γ
, γ and
δ
, δ and
ε
, and ε and
α
, by which at least one of said projection and indentations are offset from any other projection or indentation, is not ≧
180°
, and said angles at the center α
, β
, γ
, δ
, and ε
are different in size;
where n>
5;
where the n>
5 angles at the center α
, β
, γ
, δ
, and ε
are different in size, the sum of two adjacent angles at the center among α and
β
, β and
γ
, γ and
δ
, δ and
ε
, and ε and
α
, by which at least one of said projection and indentations is offset from any other projection or indentation is >
0° and
<
180°
; and
where at least two of the n>
5 angles at the center among α
, β
, γ
, δ
, and ε
are equal in size, the sum of the respective angles at the center among α
, β
, γ
, δ and
ε
occurring twice and the adjacent angles at the center on either side thereof among α and
γ
, β and
δ
, γ and
ε
, ε and
α
, and ε and
β
is >
0° and
<
180°
; and
when said plasma torch head is attached to a plasma cutting torch shaft, said plasma cutting torch shaft having a second cylinder wall having an internal diameter of D31a, the play S between said external diameter D21a of said first cylinder wall and said internal diameter D31a D31a>
D21a of said second cylinder wall is defined as;
S=(D31a−
−
D21a)/2
1 Assignment
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Accused Products
Abstract
A plasma torch head, a plasma torch shaft and a plasma torch for providing a quick and simple possibility of changing the plasma torch head are described.
17 Citations
35 Claims
-
1. A plasma torch head comprising:
-
at least one fluid passage, an electrode, a nozzle, a current conductor and a bearing surface on a bearing side, said torch head having on said bearing side a first cylinder wall with an outer surface and an annular surface, said first cylinder wall having an external diameter of D21a, said outer surface having nVer similar radial indentations and nVor similar radial projections provided peripherally thereon where nVer, nVor are ≧
0 and nVer+nVor=n≧
5, a quantity n combined radial indentations and radial projections, and at least five angles at the center α
, β
, γ
, δ
, and ε
;where n=5, the sum of two adjacent angles at the center among α and
β
,β and
γ
, γ and
δ
, δ and
ε
, and ε and
α
, by which at least one of said projection and indentations are offset from any other projection or indentation, is not ≧
180°
, and said angles at the center α
, β
, γ
, δ
, and ε
are different in size;where n>
5;where the n>
5 angles at the center α
, β
, γ
, δ
, and ε
are different in size, the sum of two adjacent angles at the center among α and
β
, β and
γ
, γ and
δ
, δ and
ε
, and ε and
α
, by which at least one of said projection and indentations is offset from any other projection or indentation is >
0° and
<
180°
; andwhere at least two of the n>
5 angles at the center among α
, β
, γ
, δ
, and ε
are equal in size, the sum of the respective angles at the center among α
, β
, γ
, δ and
ε
occurring twice and the adjacent angles at the center on either side thereof among α and
γ
, β and
δ
, γ and
ε
, ε and
α
, and ε and
β
is >
0° and
<
180°
; andwhen said plasma torch head is attached to a plasma cutting torch shaft, said plasma cutting torch shaft having a second cylinder wall having an internal diameter of D31a, the play S between said external diameter D21a of said first cylinder wall and said internal diameter D31a D31a>
D21a of said second cylinder wall is defined as;
S=(D31a−
−
D21a)/2 - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A plasma torch shaft, comprising:
-
at least one feed line for a gas, a current supply line, at least one fluid passage, a current conductor and a bearing surface on a bearing side, said torch having on its bearing side a second cylinder wall with an inner surface and an internal diameter D31a, where nVor similar radial projections and nVer similar radial indentations are provided peripherally on said inner surface, where nVor, nVer are ≧
0 and nVor+nVer=n≧
5, a quantity n combined radial indentations and radial projections, and at least five angles at the center α
, β
, γ
, δ
, and ε
;where n=5, the sum of two adjacent angles at the center among α and
β
, β and
γ
, γ and
δ
, δ and
ε
, and ε and
α
by which at least one of said projection and indentations are offset from any other projection or indentation, is not ≧
180°
, and said five angles at the center α
, β
, γ
, δ
, and ε
are different in size;where n>
5;where the n>
5 angles at the center α
, β
, γ
, δ
, and ε
are different in size, the sum of two adjacent angles at the center among α and
β
, β and
γ
, γ and
δ
, δ and
ε
, and ε and
α
, by which at least one of said projection and indentations is offset from any other projection or indentation is >
0° and
<
180°
; andwhere at least two of the n>
5 angles at the center among α
, β
, γ
, δ
, and ε
are equal in size, the sum of the respective angles at the center among α
, β
, γ
, δ and
ε
occurring twice and the adjacent angles at the center on either side thereof among α and
γ
, β and
δ
, γ and
ε
, δ and
α
, and ε and
β
is >
0° and
<
180°
; andwhen said plasma torch shaft is attached to a plasma torch head, said plasma torch head having a first cylinder wall having an external diameter of D21a, the play S between said external diameter D21a of said first cylinder wall and said internal diameter D31a D31a>
D21a of said second cylinder wall is defined as;
S=(D31a−
D21a)/2 - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A plasma torch comprising:
-
at least one feed line for a gas, an electrode, a nozzle and a current supply line, said plasma torch including a plasma torch shaft having at least one first fluid passage, a first current conductor and a first bearing surface on a bearing side, a plasma torch head including at least one second fluid passage, a second current conductor and a second bearing surface on a bearing side, said first and second bearing surfaces resting axially relative to one another, and said at least one first fluid passage being in fluid connection with said at least one second fluid passage, and said first current conductor being in electric connection with said second current conductor; one of said plasma torch shaft and said plasma torch head having, on its bearing side, a first cylinder wall with an outer surface and an annular surface and an external diameter D21a, and said other of the plasma torch shaft and said plasma torch head having on its bearing side, a second cylinder wall with an inner surface and an internal diameter D31a, where D31a is >
D21a, and nVor similar radial projections and nVer similar radial indentations being provided peripherally on said inner surface, a quantity n combined radial indentations and radial projections, where nVor, nVer is ≧
0 and nVor+nVer=n≧
5, and nVer corresponding indentations and nVer corresponding projections in engagement being provided on said outer surface;
said projections and indentations being further arranged such that when said plasma torch shaft is connected to said plasma torch head, said projections and indentations must be first brought into engagement before said first bearing surface and said second bearing surface come to abut each other;where n=5, the sum of two adjacent angles at the center among α and
β
, β and
γ
, γ and
δ
, δ and
ε
, and ε and
α
, by which at least one of said projection and indentations is offset from any other projection or indentation, is >
0° and
<
180°
, and said five angles at the center α
, β
, γ
, δ
, and ε
are different in size;where n>
5;where the n>
5 angles at the center α
, β
, γ
, δ
, and ε
are different in size, the sum of two adjacent angles at the center among α and
β
, β and
γ
, γ and
δ
, δ and
ε
, and ε and
α
, by which at least one of said projection and indentations is offset from any other projection or indentation is >
0° and
<
180°
; andwhere at least two of the n>
5 angles at the center among α
, β
, γ
, δ
, and ε
are equal in size, the sum of the respective angles at the center α
, β
, γ
, δ and
ε
occurring twice and the adjacent angles at the center on either side thereof among α and
γ
, β and
δ
, γ and
ε
, δ and
α
, and ε and
β
is >
0° and
<
180°
; andwhen said plasma torch shaft is attached to said plasma torch head, the play S between said external diameter D21a and said internal diameter D31a D31a>
D21a is defined as;
S=(D31a−
D21a)/2 - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
Specification