Axial magnetic field coil for vacuum interrupter
AssigneeThomas & Betts International, Inc.
InventorBryce Franklin Sollazzi
Life of this patent
Estimating the term…
Abstract
A contact assembly for use in a vacuum interrupter includes a contact disc of a first electrically conductive material, a coil, and a contact support. The coil is made from a second electrically conductive material and includes multiple helical sections that are oriented axially with respect to a common central axis. Each of the helical sections includes a proximal end and a distal end such that each of the helical sections is connected at the proximal end to a base made from the second electrically conductive material and is connected at the distal end to the contact disc. The contact support is centered axially within the coil and extends from the base to the contact disc.
Claims20
A contact assembly for use in a vacuum interrupter, the contact assembly comprising:
- a contact disc of a first electrically conductive material;
- a coil, of a second electrically conductive material, including multiple helical sections that are oriented axially with respect to a common central axis,
- wherein each of the helical sections includes a proximal end and a distal end,
- wherein each of the helical sections is connected at the proximal end to a base made from the second electrically conductive material, and
- wherein each of the helical sections is connected at the distal end to the contact disc;
- and
- a contact support centered axially within the coil and extending from the base to the contact disc.
A vacuum interrupter, comprising:
- a vacuum chamber;
- a first contact assembly within the vacuum chamber, wherein the first contact assembly is affixed to a stationary conductive shaft;
- and
- a second contact assembly within the vacuum chamber, wherein the second contact assembly is affixed to a moveable conductive shaft,
- wherein the first contact assembly and the second contact assembly each include:
- a contact disc of a first electrically conductive material,
- a coil, of a second electrically conductive material, including multiple helical sections that are oriented axially with respect to a common central axis, wherein each of the helical sections includes a proximal end and a distal end, wherein each of the helical sections is connected at the proximal end to a base made from the second electrically conductive material, and wherein each of the helical sections is connected at the distal end to the contact disc, and
- a contact support centered axially within the coil and extending from the base to the contact disc.
A contact assembly for use in a vacuum interrupter, the contact assembly comprising:
- a contact disc of a first electrically conductive material;
- a coil, of a second electrically conductive material, the coil including three helical sections that share a common central axis, wherein an end of each of the three helical sections is brazed, along a contact area, to the contact disc;
- and
- a contact support centered axially within the coil and contacting the contact disc, wherein the contact support prevents compression of the coil.
Dependencies are inferred from the claim text.