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EP0056331A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process and apparatus for treating electrically conductive matrices and products produced by the process

Assignee: Metafuse Ltd
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Filing: 1982-01-12
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Granted: —
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Expires: 2002-01-12
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Abstract

Abstract A process for the fusion of a second conductive element into the matrix of a first conductive element is provided in which the second element either as a solid or as a dissociable solution is placed in contact with the first conductive element and subjected to an interrupted electrical signal of a predetermined frequency.

Inventors

  • 👤 Joseph Ady

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-28 05:51
CPC Classifications
C; C23; C23C; C23C20/00; C25; C25D; C25D5/00; C25D5/18; C25D17/00; C25D17/10; C25D17/14; C25D5/60; C25D5/605; C25D5/623; C25D5/627

Claims Analysis

Total Claims: 31
Claim 1
Independent Claim 73 words
A process for the fusion, at an ambient temperature, of at least one second conductive chemical element into a matrix of a first conductive chemical element which comprises: placing said second conductive element in contact with an adjacent surface of said first conductive chemical element; applying an interrupted electrical signal of a predetermined frequency to said first and second chemical elements, whereby said second chemical element is fused with said first chemical element.
Claim 2
Dependent Claim 73 words
A process for the fusion, at an ambient temperature, of at least one second conductive chemical element into a matrix of a first conductive chemical element which comprises: placing said second conductive element in contact with an adjacent surface of said first conductive chemical element; applying an interrupted electrical signal of a predetermined frequency to said first and second chemical elements, whereby said second chemical element is fused with said first chemical element.
Claim 3
Dependent Claim 40 words
A process as claimed in claim 1 wherein the signal is a pulsing signal in the range of 2.5 microseconds to 28.6 nanoseconds with an amplitude in the range of 3 amps per 0.3 square mm. for a predetermined period.
Claim 4
Dependent Claim 40 words
A process as claimed in claim 1 wherein said second conductive element is moved over said matrix at a rate sufficient to cause a substantially continuous area of fusion of said second conductive chemical element with said first chemical element.
Claim 5
Dependent Claim 28 words
A process as claimed in claim 3 wherein rate of movement of said second conductive chemical element is substantially proportional to half the frequency of said electrical signal.
Claim 6
Dependent Claim 20 words
A process as claimed in claim 2 wherein said frequency is in the range of 400 Hz to 35 MHz.
Claim 7
Dependent Claim 27 words
A process as claimed in claim 1 wherein said first conductive chemical element is chosen from the group comprising ferrous or non-ferrous metals or an alloy thereof.
Claim 8
Dependent Claim 27 words
A process as claimed in claim 1 wherein said second conductive chemical element is chosen from the group comprising ferrous or non-ferrous metals or an alloy thereof.
Claim 9
Dependent Claim 42 words
A process as claimed in claim 1 wherein said first conductive chemical element is chosen from the group comprising ferrous metals or an alloy thereof and said second conductive element is chosen from the group comprising non-ferrous metals or an alloy thereof.
Claim 10
Dependent Claim 41 words
A process as claimed in claim 1 wherein said first conductive element is chosen from the group comprising non-ferrous metals or an alloy thereof and said second conductive element is chosen from the group comprising ferrous metals or an alloy thereof.
Claim 11
Dependent Claim 25 words
A process as claimed in claim 1 wherein said second conductive element is in the form of a solid electrode including said second conductive element.
Claim 12
Dependent Claim 85 words
Apparatus for the fusion of a first conductive chemical element to a second conductive chemical element which comprises, an oscillating circuit for generating an interrupted halfwave signal within a predetermined frequency range, said oscillating circuit having an output and means for applying said oscillating circuit output to a matrix of a first conductive chemical element to which a second conductive chemical element is to be fused and said second chemical element whereby said second conductive chemical element is fused with said first conductive chemical element.
Claim 13
Dependent Claim 85 words
Apparatus for the fusion of a first conductive chemical element to a second conductive chemical element which comprises, an oscillating circuit for generating an interrupted halfwave signal within a predetermined frequency range, said oscillating circuit having an output and means for applying said oscillating circuit output to a matrix of a first conductive chemical element to which a second conductive chemical element is to be fused and said second chemical element whereby said second conductive chemical element is fused with said first conductive chemical element.
Claim 14
Dependent Claim 12 words
Apparatus as claimed in claim 11 wherein said predetermined frequency is fixed.
Claim 15
Dependent Claim 21 words
Apparatus as claimed in claim 11 wherein said predetermined frequency is variable and said apparatus includes means for varying said signal.
Claim 16
Dependent Claim 37 words
An article comprising a matrix of a first conductive chemical element with an outer surface having a second - conductive chemical element fused therewith at least adjacent said outer surface obtained by the process of claim 1.
Claim 17
Dependent Claim 54 words
An article as claimed in claim 14 wherein said first conductive chemical element is chosen from the group comprising ferrous or non-ferrous metals or an alloy thereof and said second conductive chemical element is chosen from the group comprising ferrous or non-ferrous metals or an alloy thereof different from said first conductive chemical element.
Claim 18
Dependent Claim 19 words
An article as claimed in claim 15 wherein said first conductive chemical element is ferrous or a ferrous alloy.
Claim 19
Dependent Claim 19 words
An article as claimed in claim 15 wherein said first conductive chemical element is non-ferrous or a non-ferrous alloy.
Claim 20
Dependent Claim 18 words
An article as claimed in claim 16 wherein said second conductive element is non-ferrous or a non-ferrous alloy.
Claim 21
Dependent Claim 18 words
An article as claimed in claim 16 wherein said second conductive element is ferrous or a ferrous alloy.
Claim 22
Dependent Claim 33 words
An article as claimed in claim 16 wherein said first conductive chemical element is steel and second conductive chemical element is chosen from the elements of Groups 4B, 6B of the Periodic Table.
Claim 23
Dependent Claim 156 words
21, Apparatus for fusing one electrically conductive component to another electrically conductive component, said apparatus comprising electrical power supply means, said power supply means having an oscillating circuit and an output to provide a half-wave electrical signal across said output, said output having a pair of terminals, first connector means having one end connected to one output terminal and an opposite end connectable to said other component at one position, and second connector means having one end connected to the other output terminal and an opposite end connectable to said other component at another position, said first connector means comprising said one component at the opposite end of said first connector means to place said one component in contact with said other component when said first connector means is connected thereto and said electrical power supply means is operating and pass an intermittent current through said components to fuse said one component to said other component.
Claim 24
Dependent Claim 156 words
21, Apparatus for fusing one electrically conductive component to another electrically conductive component, said apparatus comprising electrical power supply means, said power supply means having an oscillating circuit and an output to provide a half-wave electrical signal across said output, said output having a pair of terminals, first connector means having one end connected to one output terminal and an opposite end connectable to said other component at one position, and second connector means having one end connected to the other output terminal and an opposite end connectable to said other component at another position, said first connector means comprising said one component at the opposite end of said first connector means to place said one component in contact with said other component when said first connector means is connected thereto and said electrical power supply means is operating and pass an intermittent current through said components to fuse said one component to said other component.
Claim 25
Dependent Claim 24 words
Apparatus according to claim 21 wherein said half-wave signal has a frequency in the range of from about 400 Hz to about 35 MHz.
Claim 26
Dependent Claim 37 words
Apparatus according to claim 21 wherein said intermittent current has a maximum value of about 3 amps, and said first connector means places said one component in contact with about 0.3 sq. mm. of said other component.
Claim 27
Dependent Claim 15 words
Apparatus according to claim 21 wherein said other electrically conductive component is in solid form.
Claim 28
Dependent Claim 24 words
Apparatus according to claim 22 wherein said first connector means comprises means for rotating said first component while in contact with said other component.
Claim 29
Dependent Claim 29 words
Apparatus according to claim 25 wherein said rotating means is operable to rotate the first component at a speed in the range from about 5,000 to about 10,000 rpm.
Claim 30
Dependent Claim 15 words
Apparatus according to claim 21 wherein said other electrically conductive component is in liquid form.
Claim 31
Dependent Claim 34 words
Apparatus according to claim 26 wherein said first connector means includes a reservoir for said liquid other component and means to regulate the flow of said liquid component into contact with said other component.

References Cited (Backward Citations)

FR774077A Cited
US3743590A Cited
US4206028A Cited
DE3020824A1 Cited

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