Abstract: A support portion of an elastic contactor is located in a fixed region surrounded by a plurality of openings on a contact sheet. The support portion extends over the substantially entire fixed region and along the outer rims of the surrounding openings.

Abstract: A support portion of an elastic contactor is located in a fixed region surrounded by a plurality of openings on a contact sheet. The support portion extends over the substantially entire fixed region and along the outer rims of the surrounding openings.

Abstract: A connecting unit for establishing a connection with external connecting portions of an electronic device includes a base and a plurality of spiral contactors having a conductive layer and an auxiliary resilient layer. The top face, the bottom face, and both side faces of the conductive layer are completely surrounded by the auxiliary resilient layer. The conductive layer is composed of a material having a specific resistance lower than the specific resistance of the auxiliary resilient layer. The auxiliary resilient layer is composed of a material having a yield point and an elastic modulus higher than the yield point and the elastic modulus of the conductive layer.

Abstract: Object A connection board is provided in which multiple external contacts of an electronic component and multiple spiral contacts on a board are arranged to highly accurately face each other, and the external contacts are actively guided to the spiral contacts, so as to reliably provide individual connections therebetween. Solving Means A connection board CB includes a relay board 20 having a plurality of spiral contacts 24A, 24B provided on both surfaces of the relay board 20, and a guide member 30 having a plurality of small holes 31 into which the spiral contacts 24A and a plurality of external contacts 2a provided on an electronic component 1 are respectively inserted in both directions. The relay board 20 and the guide member 30 are arranged to face each other. Small holes 31A provided in at least two or more corner portions from among the plurality of small holes 31 have a diameter smaller than a diameter of the residual plurality of small holes 31.

Abstract: A connecting unit for establishing a connection with external connecting portions of an electronic device includes a base and a plurality of spiral contactors having a conductive layer and an auxiliary resilient layer. The top face, the bottom face, and both side faces of the conductive layer are completely surrounded by the auxiliary resilient layer. The conductive layer is composed of a material having a specific resistance lower than the specific resistance of the auxiliary resilient layer. The auxiliary resilient layer is composed of a material having a yield point and an elastic modulus higher than the yield point and the elastic modulus of the conductive layer.

Abstract: A connecting unit for establishing a connection with external connecting portions of an electronic device includes a base and a plurality of spiral contactors having a conductive layer and an auxiliary resilient layer. The top face, the bottom face, and both side faces of the conductive layer are completely surrounded by the auxiliary resilient layer. The conductive layer is composed of a material having a specific resistance lower than the specific resistance of the auxiliary resilient layer. The auxiliary resilient layer is composed of a material having a yield point and an elastic modulus higher than the yield point and the elastic modulus of the conductive layer.

Abstract: The present invention provides an eddy-current brake comprising a rotator made of a ferromagnetic material and electromagnets arranged so that the rotator will intercept the magnetic flux, wherein a braking force is produced by the eddy current generated in the rotator. An Ni-Cu-Ni three-layer thin metallic cladding 30 is provided on the inner surface of the cylindrical peripheral wall portion 11 of the rotator 10, and the coils 45 of the electromanets 40 are enclosed by a magnetic pole case 46 made of a ferromagnetic material, thereby to enable development of a large braking torque. This device is suited for use as an auxiliary brake for vehicles.

Abstract: An eddy-current brake comprising a rotor or rotors made of a ferromagnetic material and electromagnets, in which the rotor is so disposed that it crosses the magnetic flux and a braking force is produced by the eddy current generated in the rotor. The rotor is provided with a metallic layer formed from a non-magnetic material having a greater electroconductivity than the rotor, and the coil of each electromagnet is enclosed by a magnetic pole case made of a ferromagnetic material, so that the device is capable of developing a large braking torque and suited for use as an auxiliary brake for vehicles.