A head drum assembly is provided with a pair of oilless bearings installed within a bore of a stationary drum. Each of the oilless bearings is of a general donut-shaped configuration. A cross section thereof is provided with an external circular shape portion, an upper and a lower bearing surfaces. The upper and the lower bearing surfaces define an inner bore of the oilless bearing into which a rotating shaft are received, and slantly extend from the pair of planar portions, respectively, meetin...

Disclosed is a head drum assembly of the video cassette recorder providing a lower drum, a motor which is mounted at the lower drum, ant upper drum rotating by the motor, a rotary transformer which is installed between the lower drum and the upper drum, and a plurality of head bases having one or more heads for reproducing the video signals from a magnetic tap and being integrally formed with the rotary transformer. The head bases and the rotary transformer are formed as one body by an insert mo...

A video cassette recorder provided with a head drum assembly whose structure is modified to ensure an easy and simple placement of each head base having a through hole and a video head is disclosed. The structure is provided with a rotational drum having through holes, an integral base locating member for locating the head bases beneath the rotational drum, a rotor transformer, and connecting pins for connecting each of the head bases to the rotor transformer. The upper ends and the lower ends o...

A head drum assembly comprises a plurality of vent holes formed through an upper drum to allow an air under the upper drum to communicate with an air above the upper drum, a flange member for making an air flow within a space between the upper drum and a lower drum, in response to a rotational movement of the upper drum, in such a manner that air is introduced through the vent holes and is radially outwardly flown away from the space, and a plurality of outlet ports for guiding the flown air to ...

A rotary head assembly is disclosed including a transducer for recording information on and reproducing information from a record medium. The transducer is resiliently supported by a resilient support member which, in turn, is secured to a transducer receiving structure, the latter being coupled to a rotary drive device for rotating the transducer about an axis of rotation to thereby permit information to be recorded on and reproduced from the record medium which is contacted by the transducer. ...

Apparatus in an automatic telephone answering device utilizing a single motor for scanning a tone arm across a grooveless recording disc to selectively play back a message magnetically recorded thereon in a spiral path as well as for rotating the turntable. The apparatus includes an electromagnetic clutch powered by a positive belt drive coupled to the motor for driving a spirally contoured cam to transport the tone arm across the disc. A control circuit including an optoelectronic switch positi...

For use in a helical scan magnetic tape record/reproduce apparatus, disclosed is a rotary head scanner including a reflective tachometer/headwheel assembly. The rotary head scanner includes a plurality of magnetic record/reproduce heads mounted on a headwheel which has a reflective tachometer disposed on one side of the headwheel. A radiation source and radiation sensor are located adjacent to the reflective tachometer. The radiation sensor senses radiation reflected from the tachometer and prod...

In an apparatus for recording binary information on a flexible magnetic disk, a plate, is provided connected to an electric motor, for rotating the disk, and a spiral guide is formed on a first surface of the plate for moving a recording head radially with respect to the disk, in synchronism with the rotation of the plate and the disk. The improvement comprises an electronic circuit, which controls the angular speed of the motor, and quickly accelerates the motor, when the last binary informatio...

Extended arcuate travel of the flexure in a disk drive suspension head gimbal assembly is provided by reducing the load beam body thickness in the areas where the load beam body normally interferes with full arc traverse, by etching some or all of the load beam material away in the interference areas.

Disclosed in an arrangement to achieve satisfactory head contact by increasing contact face pressure at a head gap and to reduce the change in time of head contact performance in a double azimuth head. Heads in a portion in which a tape is slid are respectively constructed with each head having two different arcs with a radius of curvature R1 in a first area which includes a gap, and with a radius of curvature R2 in a second area which is adjacent to the first area. A transition portion P for tr...