Abstract: An improved electromagnetic tactile stimulator is disclosed for preferable use in a matrix array. A plurality of such stimulators are confronted to impart vibratory impulses of varying intensity to the skin of a subject to augment typically lost sensual modality such as sight or sound. Each electromagnetic tactile stimulator is in the form of a solenoid having a magnetically polarized plunger.

Abstract: A system for controlling the closing of a camera shutter includes photosensitive means for detecting the available light level in the field of view of the camera to provide an output control signal a predetermined time after initiation of shutter closure dependent on the detected available light level. The power supply for the system includes a bidirectional linear magnetic generator which includes a spring drive which is mechanically loaded and unloaded by the film advance mechanism of the camera to power the exposure control circuitry. A solenoid, such as a rotary solenoid or linear solenoid magnetically latches the shutter in the open position during exposure until the solenoid coil is energized at the completion of the required exposure time to neutralize the magnetic flux in the magnetic stator of the solenoid, overcoming the magnetic latch and, due to a spring, thereafter biasing the armature to a second position which, through the mechanical linkage of the camera, closes the shutter.

Abstract: Integrated circuit mask patterns are laser machined by mounting substrates on a support that is periodically stepped in a y direction after each scan by a laser writing beam in an x direction. X-direction scanning is accomplished by mounting a mirror on a carriage that reciprocates by rebounding between two displaced coil springs. A coding laser beam is reflected from the carriage through a stationary code plate, comprising alternate transparent and opaque stripes, to monitor the position of the carriage and to control the modulation of the writing beam.

Abstract: An electrically operated stapling device is disclosed. Staples are driven into the article to be stapled by a simple driver blade which is powered by a current actuated solenoid. In the preferred embodiment, the solenoid is provided with a plurality of pulses which are derived from alternate half-cycles of an AC power source which powers the stapling device. The circuit produces two pulses by defining a window in each of the successive output cycles of the power source. The current then initiates the generation of an enabling signal which lasts for a predetermined period of time which begins during the window. During this period of time, alternate half-cycles of the power source are coupled to the solenoid, thereby causing the driver blade to drive the staple into the article to be stapled.

Abstract: An axially movable magnetic member is disposed in coaxial relationship to pulse core windings. Responsive to alternating current or pulsed direct current applied to the pulse core windings to the movable permanent magnet is displaced axially to generate an electromagnetic force in a generating coil.

Abstract: A tubular soft iron member is slidably positioned within a magnet-coil assembly and adapted to respond to toggle action travel between two magnetically stable states by producing rapid changes in magnetic flux. Electrical pulses developed by the coil in response to the changes in magnetic flux are useful for control and alarm purposes.

Abstract: In a deceleration detecting device, magnetic induction electromotive force is utilized as a signal for expanding an air bag, and magnitude of this magnetic induction electromotive force is proportional to a speed variation ratio of a movable magnetic substance transferred by deceleration exceeding a predetermined value of a vehicle in order to decrease a detecting time.

Abstract: An electrical pulse generator comprising a closed magnetic circuit made up of permeable iron and permanent magnet material having a cup-shaped portion, a central rod shaped portion extending upwardly from the inside bottom of the cup portion and a generally flat disc-shaped removable keeper making contact with the cup-shaped portion and the upper end of the rod-shaped portion, an electric coil wound on a portion of said magnetic circuit such that on movement of the keeper away from the rest of the structure an electrical voltage pulse is generated in the coil, mechanical means such that on activation by a predetermined level of shock severity it forces the keeper away from the rest of the structure.

Abstract: The switch includes an annular permanent magnet, a plate of soft magnetic material at one side of the magnet, a stationary electric coil at the opposite side of the magnet, and an unrestrained free-flying member of soft magnetic material coaxial with magnet and coil and movable axially in them toward and away from the plate. It normally is held by keeper means in a rest position away from the plate, but means are provided movable relative to it for first engaging and then pushing it toward the plate until the magnetic attraction between the magnet and the free-flying member causes that member to fly from the pushing means to the plate at high velocity. This creates a rapid change in flux in the free-flying member and produces a voltage pulse in the coil.

Abstract: A linearly reciprocating fan for cooling a linear motor which drives the fan is disclosed as including a fan blade attached to the linear motor and means for guiding the air flow caused by the reciprocating blade across the linear motor to cool the motor.

Abstract: The present invention relates to a miniaturized nuclear battery, consisting of several in series connected cells, wherein each cell contains a support which acts as positive pole and which supports on one side a .beta.-emitter, above said emitter is a radiation resisting insulation layer which is covered by an absorption layer, above which is a collector layer, and wherein the in series connected cells are disposed in an airtight case.

Abstract: A reciprocating motor compressor assembly includes a pair of opposed pistons or diaphragms actuated by a reciprocating armature. The armature is fabricated from laminations of ferromagnetic material and includes a pair of electrically conductive induction rings disposed about the ends of the laminations in coaxial relationship with a longitudinal axis of the armature. A two coil stator is disposed in coaxial relationship with the armature and the coils are alternately energized by a multivibrator or a pair of oppositely poled half wave rectifiers connected to a source of alternating current voltage. In order to increase the duty cycle of the energizing current, each stator coil is provided with two coaxially wound parallel connected windings and a phase shifting capacitor connected in series with one of the windings.