A magnetic bearing in which a magnetic body is suspended in the air gap between the rotor and the stator for movement perpendicular to the flux path across the gap. Friction restrains such movement of the magnetic body relative to the stator. The bearing is advantageous for use in an ultracentrifuge.

A magnetic pole comprising a strip of magnetic material which is corrugated and compressed to define a stack with adjacent convolutions thereof in facial contact. The convolutions at one end of the stack are longer than the remaining convolutions of the stack so that the longer convolutions define a pole shoe at one end of the pole while the remaining convolutions define a pole body.

1. In an absorber for minimizing reflections of electromagnetic radiation of preselected radar wave lengths in the approximate corresponding preselected frequency range of 10 megacycles to 15,000 megacycles wherein a layer of absorber material has a highly conductive planar backing with the absorber material and the backing arranged and disposed so as to establish a standing wave with a maximum magnetic field positioned within said layer in response to radiation incident upon said layer, that im...

Apparatus in which a beam of charged particles is brought to a focus by means of a magnetic lens situated behind the target position, leaving the area in front of the target clear, the magnetic lens comprising an electrically conducting coil arranged around the axis of the beam and a magnetic polepiece which extends along the axis of the beam at least within the space surrounded by the coil. Preferably the polepiece protrudes and at least partly tapers towards the target position.

A magnetic suspension bearing includes a pair of cylindrical magnets. Each magnet is magnetized to have one pole on an end surface thereof and another pole on the peripheral surface thereof. Like poles on the end surfaces of the two magnets face one another. The lines of flux extend out beyond the outer periphery of the two magnets to obtain optimum repulsive force while minimizing radial forces resulting from radial misalignment between the longitudinal axes of the two cylindrical magnets.

Two movable members, one containing a permanent magnet and the other containing a non-magnetized but magnetically susceptable element are positioned such that there exists a magnetic force of attraction between the two members, thus closing a switch or valve. A control magnet having a greater strength than the first permanent magnet opens the switch or valve by attracting the susceptable element and repelling the permanent magnet.

In a magnetic transmission device a torque magnetic ring having an even number of axially aligned bars of highly magnetic material is rotatable mounted relative to at least one of two magnetic pole rings for transmitting torque between the pole rings.

A magnetic system is mounted for rotation in a housing along the inner surface thereof. The housing is stationarily supported in a jacket having an inlet and outlet and defining with the outer surface of the housing a passage for a material containing magnetically attractable particles between the inlet and the outlet. As the material passes through the passage, the magnetically attractable particles are attracted to the outer surface of the housing and dragged along the same to a predetermined ...

The magnetic fastener comprises a male fastening member having a convexly curved contacted side, and a female fastening member having a concavely curved contact portion. A magnetic fastener may be provided with elongated bars, or with strips substantially co-extensive in length with the flap of a garment. A still further embodiment of this invention may include an armature to increase magnetic force resultant from the magnets.

The device comprises a magnetic circuit having an air gap into which a mixture of magnetically attractable and magnetically non-attractable materials can be passed. The magnetic circuit includes a rotatably mounted separator roller comprised of magnetizable material, with the periphery of the roller being located adjacent to the air gap. The magnetic circuit further includes a permanent magnet arrangement located exteriorly of the separator roller and operative for establishing a flow of flux th...