What is claimed is:
1. A terminal assembly for connecting a core member of a remote control cable assembly to a control member comprising, in combination:
a housing;
an isolator secured to the housing and having a deflectable wall at least partially forming a passage for receiving the control member; and
an adjuster movable between an installed position wherein the adjuster prevents outward deflection of the wall away from the passage and an uninstalled position wherein the wall is free to outwardly deflect away from the passage.
2. The terminal assembly according to claim 1, wherein the isolator is secured to the housing with a snap-fit connection.
3. The terminal assembly according to claim 1, wherein the adjuster is secured to the isolator with a snap-fit connection in the installed position.
4. The terminal assembly according to claim 1, wherein the adjuster blocks outward deflection of the wall when the adjuster is in the installed position.
5. The terminal assembly according to claim 1, wherein the isolator includes a flange within the passage and adapted to cooperate with the control member to secure the control member to the isolator when the adjuster is in the installed position.
6. The terminal assembly according to claim 5, wherein the flange has an arcuate surface adapted to engage the control member.
7. The terminal assembly according to claim 1, wherein the isolator has an annularly-shaped recess adapted to receive at least a portion of the adjuster therein when the adjuster is in the installed position.
8. The terminal assembly according to claim 7, wherein the adjuster blocks outward deflection of the wall when the adjuster is located in the recess.
9. The terminal assembly according to claim 7, wherein the isolator and the adjuster are provided with a cooperating rib and recess to secure the isolator within the recess with a snap-fit connection when the adjuster is in the installed position.
10. The terminal assembly according to claim 7, wherein the adjuster is generally tubularly-shaped such that the adjuster is at least partially received in the recess when the adjuster is in the installed position.
11. The terminal assembly according to claim 10, wherein the adjuster has a wedge-shaped inner surface adapted to deflect the wall toward the passage when the adjuster is in the installed position.
12. The terminal assembly according to claim 11, wherein the isolator has a rib at the wall and adapted to engage the wedge shaped surface when the adjuster is in the installed position.
13. The terminal assembly according to claim 1, wherein the adjuster has a wedge-shaped surface adapted to deflect the wall toward the passage when the adjuster is in the installed position.
14. The terminal assembly according to claim 1, wherein the isolator has a rib at the wall and adapted to engage the adjuster when the adjuster is in the installed position.
15. A connection between a terminal assembly of a remote control cable assembly and a control member comprising, in combination:
a control member;
a housing;
an isolator secured to the housing and having a deflectable wall at least partially forming a passage receiving the control member and adapted to cooperate with the control member to selectively secure the control member to the isolator; and
an adjuster movable between an installed position wherein the adjuster engages the wall and deflects the wall into engagement with the control member to secure the control member to the isolator and an uninstalled position wherein the wall is deflectable away from the passage so that the control member can be selectively inserted into the passage and removed from the passage.
16. The terminal assembly according to claim 15, wherein the isolator includes a flange within the passage and adapted to cooperate with the control member to secure the control member to the isolator when the adjuster is in the installed position.
17. The terminal assembly according to claim 15, wherein the isolator has an annularly-shaped recess adapted to receive at least a portion of the adjuster therein when the adjuster is in the installed position.
18. The terminal assembly according to claim 17, wherein the adjuster blocks outward deflection of the wall when the adjuster is located in the recess.
19. The terminal assembly according to claim 17, wherein the adjuster is generally tubularly-shaped such that the adjuster is at least partially received in the recess when the adjuster is in the installed position.
20. A terminal assembly for connecting a core member of a remote control cable assembly to a control member comprising, in combination:
a housing;
an isolator secured to the housing with a snap-fit connection and having a deflectable wall at least partially forming a passage for receiving the control member;
an adjuster movable between an installed position wherein the adjuster prevents outward deflection of the wall away from the passage and an uninstalled position wherein the wall is free to outwardly deflect away from the passage;
wherein the adjuster is secured to the isolator with a snap-fit connection in the installed position;
wherein the isolator includes a flange within the passage and adapted to cooperate with the control member to secure the control member to the isolator when the adjuster is in the installed position;
wherein the isolator has an annularly-shaped recess adapted to receive at least a portion of the adjuster therein when the adjuster is in the installed position such that the adjuster blocks outward deflection of the wall when the adjuster is in the installed position; and
wherein the adjuster is generally tubularly-shaped such that the adjuster is at least partially received in the recess when the adjuster is in the installed position and has a wedge-shaped inner surface adapted to deflect the wall toward the passage when the adjuster is in the installed position.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A transformer comprising:
a two-part core composed of a magnetic material, including a toroidal piece having an inner wall, and an outer wall, and a shell piece having an inner wall and an outer wall, the toroidal piece being concentrically disposed within the shell piece; and
at least two windings disposed in a space formed between the outer wall of the toroidal piece, and the inner wall of the shell piece.
2. The transformer as claimed in claim 1 wherein the inner wall of the toroidal piece defines an inner cooling duct.
3. The transformer as claimed in claim 2 further comprising two yokes coupling the toroidal piece with the shell piece at respective axial ends of the transformer.
4. The transformer as claimed in claim 3 wherein the yokes are toroidal pieces of magnetic material having an axial passage that is aligned with the cooling duct, the yokes and the two-part core serving to provide a closed magnetic flux path for the transformer.
5. The transformer as claimed in claim 4 wherein the yokes are made of strip magnetic steel arranged to reduce eddy currents.
6. The transformer as claimed in claim 4 wherein the yokes are formed by securing the magnetic steel strips at first ends to form a ring with second ends extending radially outwards, and applying azimuthal force to the second ends of the strips to compress the strips until a solid torpid is formed.
7. The transformer as claimed in claim 4 further comprising certified sealing materials for providing a fluid seal between the yokes and the two-part cores.
8. The transformer as claimed in claim 1 wherein the two-part core has a surface area sufficient to dissipate heat in a medium of air, and the transformer is a dry-type transformer.
9. The transformer as claimed in claim 1 wherein the two-piece core is composed of powdered steel.
10. The transformer as claimed in claim 1 wherein the two-piece core is composed of laminar of strip magnetic steel.
11. The transformer as claimed in claim 10 wherein a sector of the shell piece and toroidal piece are removed to break the electrical steel winding into unconnected single turns to inhibit short circuit currents within the two-piece core.
12. The transformer as claimed in claim 11 wherein a connection for one of the at least two windings passes through one of the sector removed from the shell piece and the sector removed from the toroidal piece.
13. The transformer as claimed in claim 6 further comprising a connector box that covers a sector removed from the shell piece, the connector box being sealingly attached to the shell piece and covering the sector to seal the transformer to an external environment.
14. The transformer as claimed in claim 13 further comprising a certified sealing compound sealing a gap formed by the sector removed from the toroidal piece where the sector intersects the inner cooling duct.
15. The transformer as claimed in claim 1 further comprising a plurality of the two-part cores positioned in axial alignment to provide a multi-phase transformer.
16. The transformer as claimed in claim 15 further comprising two yokes coupling toroidal pieces with shell pieces of the two-part cores at opposite ends of the transformer, and a yoke between each of the. two-part cores.
17. The transformer as claimed in claim 1 further comprising at least one cooling fin in thermal contact with the shell core, the cooling fin effectively increasing a heat dissipating surface area of the shell core.
18. The transformer as claimed in claim 1 wherein the at least two windings comprise a primary and a secondary winding.
19. The transformer as claimed in claim 1 wherein the at least two windings comprise a first and a second winding, and the transformer operates at least one power frequency between 30 Hz and 400 Hz.
20. A two-part core for a transformer, the two part core comprising:
a toroidal piece composed of a magnetic material having an inner wall and an outer wall;
a shell piece of magnetic material having an inner wall an outer wall; and
an annular space defined between the toroidal piece concentrically disposed within the shell piece for housing windings, the inner wall of the toroidal piece and the outer wall of the shell piece providing radial dissipation of heat produced in the two-part core by electrical current applied to the windings.
21. A method of manufacturing of toroidal transformer, comprising:
winding a strip of magnetic material around a spindle to form a toroidal piece having an inner wall and an outer wall;
heat annealing the toroidal piece and removing a sector therefrom;
applying a layer of insulation to the outer wall of the toroidal piece;
winding a first winding over the insulation on the toroidal piece;
applying a layer of insulation over the first winding;
winding a second winding over the insulation applied to the primary winding;
applying a layer of insulation of the second winding;
winding a strip of magnetic material over the insulation applied to the second winding to form a shell piece having an inner wall contacting the insulation applied to the secondary winding and an outer wall; and
heat annealing the shell piece and removing a sector therefrom.
22. The method as claimed in claim 21 further comprising forming yokes for the transformer by:
assembling a plurality of magnetic metal strips in a jig that supports the strips in a spiral orientation around a central aperture having a diameter equal to a diameter of an aperture formed by the inner wall of the toroidal piece;
applying an azimuthal force to compress the strips into a solid toroidal piece having an outer diameter equal to a diameter of the outer wall of the shell piece; and
heat annealing the yoke.