Removable contactless transmission clamp assembly system

• US 4,386,280 A
• Filed: 05/01/1980
• Issued: 05/31/1983
• Est. Priority Date: 05/07/1979
• Status: Expired due to Term

• Current Assignee: Commissariat a L'Energie Atomique (French Alternative Energies and Atomic Energy Commission)
• Original Assignee: Commissariat a L'Energie Atomique (French Alternative Energies and Atomic Energy Commission)
• Inventors: Sajot, Pierre, Ricaud, Jean-Louis, Briez, Pierre R.
• Primary Examiner(s): Rubinson, G. Z.
• Assistant Examiner(s): Dwyer, James L.
• Application Number:
  US06/145,753
• Time in Patent Office: 1,125 Days
• Field of Search: 307/145, 307/149, 307/151, 336/173, 336/174, 336/176, 336/182, 336/183
• US Class Current: 307/145
• CPC Class Codes: G01R 15/185 with compensation or feedback windings or interacting coils, e.g. 0-flux sensors using galvano-magnetic field sensors G01R15/20; conversion of DC into AC using transductors G01R19/20
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02G 3/22 Installations of cables or lines through walls, floors or ceilings, e.g. into buildings

Abstract

A method and apparatus for electrical transmission, wherein an electric current is applied to the primary winding of a mains transformer the secondary winding of which consists of at least one spiral, and a corresponding electric current is collected at the secondary winding of at least one distribution transformer, the primary winding of which consists of said spiral, while the secondary winding of the distribution transformer is mounted in a removable member.

Claims

1. Apparatus for electrical transmission, comprising a mains transformer and at least one distribution transformer, these transformers having a common winding consisting of at least one spiral which defines the secondary winding of the mains transformer and the primary winding of the distribution transformer, the secondary winding of the distribution transformer being mounted in a clamping means which comprises roller bearings capable of rolling on cam surfaces suitable for controlling the opening and closing of the clamp when the latter moves in a specified direction.

2. An apparatus according to claim 1, wherein the removable member is a clamp comprising a handle capable of being gripped by an apparatus for remote-controlled manipulation.

3. An apparatus according to claim 1, wherein the roller bearings are mounted at the ends of the jaws of the removable clamp, whilst the cam surfaces are formed by the outer surfaces of the spiral or of a sheath surrounding the spiral.

4. An apparatus according to claim 1, wherein the roller bearings are mounted on travelling blocks integral with the jaws of the removable clamp, the cam surfaces being formed on a detachable member.

5. An apparatus according to claim 1, wherein the removable member is associated with a member movable in translation in a direction parallel to the axis of the spiral and/or movable in rotation about this axis.

6. An apparatus for transmitting three-phase electric currents according to claim 3, comprising three clamps for transmitting the three phases of the electric currents.

7. An apparatus for electrical transmission through a wall according to claim 1, wherein the mains transformer is located on a first side of the wall, the distribution transformer is located on the other side of the wall and the spiral common to these transformers passes through the wall.

8. An apparatus according to claim 7, wherein the spiral is fixed to the wall in leaktight manner at the points where it passes through.

9. An apparatus according to claim 7, wherein the part of the spiral located on the other side of the wall is accommodated in a sheath fixed to the wall in leaktight manner.

10. An apparatus for electrical transmission through a wall according to claim 1, wherein the mains transformer is located on a first side of the wall and the distribution transformer is located on the other side of the wall and a tubular excrescence of said wall connected to the latter at both ends so that the inside of said excrescence communicates with the first side of the wall, whilst the spiral common to the transformers is located on the first side of the wall and inside the tubular excrescence of the wall.