A magnetically controlled toy including a toy vehicle with magnetic means located therein and means to manipulate and guide the vehicle including a control member or wand which includes magnetic means that cooperate with the magnet means in the vehicle to produce magnetic coupling force therebetween.

A magnetic keyboard assembly including a key stem magnetically held in an unactuated position by the attraction of a magnet to a metallic mounting board and adapted to be reciprocated between an unactuated position and an actuated position where an electrically conductive rubber grommet engages a contact pad having spaced-apart contacts which become electrically connected upon engagement of the electrically conductive grommet. The grommet is characterized by a resilient outer ring spaced from a ...

A magnetic glass prepared from calcination of an alkali metal alumino silicate and iron sulfide.

In a magnetic lock of the type having at least one tumbler pin pivotally supported on a mounting plate and a locking plate having an opening arranged to receive one end of the tumbler pin when an opposite end of such pin is attracted by a permanent magnet device carried by a key, the improvement wherein the opposite end of the tumbler pin is formed with a transversely enlarged head portion and the mounting plate is formed with abutment devices arranged to engage with the head portion to insure t...

A magnetic head fabricated through the thin film technique and used with a magnetic drum or disk of an electronic computer. The magnetic head comprises a first magnetic material forming a part of a magnetic flux path; a second magnetic material forming another part of the magnetic flux path; at least two conductors superposed between the first and second magnetic materials, with insulating films inserted between the magnetic materials and the conductors and between the conductors; two lead condu...

A magnetic separator is disclosed having particular utility in separating ferromagnetic materials with sizes on the order of microns from viscous fluids having viscosities measured in poises. The separator utilizes a ferromagnetic filter preferably in the form of a bed of ferromagnetic particles through which the fluid is passed and a magnetic field established in the bed transversely to the direction of fluid flow.

A magnetic clutch has a tooth structure particularly adapted for quick movement into driving and meshing engagement at high rotary speeds and to permit quick disengagement between clutch faces of facing first and second clutch members each operatively connected to respective coaxially aligned members, such as a driving member and a driven member respectively in response to selective energizing and deactivation of an electro-magnetic component associated with the first and second clutch members w...

A magnetic flowmeter wherein liquid to be metered is conducted through a flow tube to intersect a transverse magnetic field produced by an electromagnet, the voltage induced in the fluid being transferred to a pair of electrodes mounted at diametrically opposed positions on the tube. The electromagnet is excited by DC power which is applied thereto periodically, this being effected by means of a switch interposed between the electromagnet and the DC power source. When DC excitation is cut off by...

A magnetic separator, for separating magnetizable particles from a fluid, consists of a separating chamber filled with a paramagnetic packing material, and a magnet for establishing a magnetic field within the packing material. The packing material is pervious to the fluid. A process for separating magnetizable particles from a fluid consists in applying a magnetic field to the packing material while passing the fluid therethrough, so as to attract the magnetizable particles in the fluid to coll...

A static compass capable to supply a digital indication of the magnetic h angle, comprising circuits for supplying two signals corresponding to two orthogonal components of the horizontal component of the earth magnetic field, said signals consisting of a carrier frequency, amplitude modulated according to the value of said orthogonal components, a circuit for introducing a phase shift through 90.degree. electric on one of said modulated frequencies, a circuit effecting the sum and the differenc...