摘要:
An ultrasonic motor capable of being accurately step-driven comprises a vibrating member piezoelectrically vibrated for driving and halting a movable member. A driving wave is generated for vibrating the vibrating member to drive the movable member, and a halting wave is generated for vibrating the vibrating member to halt the movable member. The driving wave can be either a travelling wave or a standing wave, and the halting wave is a standing wave. The movable member is divided into a plurality of portions, and when the vibrating member is driven by the halting wave, the portions of the movable member become centered at respective nodal portions of the standing halting wave, causing the movable member to stop rotating so that the ultrasonic motor can be accurately step-driven.
摘要:
A recording and playback device utilizing magnetic tape, such as a tape cassette, as a recording medium includes a magnetic head arranged to contact one side of the magnetic tape and a stabilizer arranged positioned directly opposed the magnetic head corresponding to the opposite side of the magnetic tape such that the magnetic tape move along a path interposed between the stabilizer and the magnetic head. The stabilizer includes a tape slider surface in contact with the side of the tape opposite the magnetic head contacting side. Further, the tape slider surface of the stabilizer may be formed with a recessed portion and tape surface scraper portions. According to this structure vibration of the magnetic tape in the vicinity of the magnetic head is greatly reduced such that a head servo for control of the magnetic head may accurately position the magnetic head even in devices utilizing a very small track pitch. Also read/write error, tape dropout, and the like, due to foreign matter entering the tape path, is reliably prevented. Further, space between the magnetic tape and the head is reduced and contact pressure between the head and the tape is maintained to optimize recording and or playback operations between the head and the magnetic tape.
摘要:
In a vacuum type switch gear device an L shaped stationary and movable conductors arrangement, a transitive portion from one spiral arc groove to a neighboring another spiral arc groove on the surface of a movable electrode defined by the terminating end portion of the one spiral groove, the starting end of the adjacent neighboring other spiral groove and the outer circumferential edge portion of the movable electrode is arranged in a substantially overlapping relationship in a vertical direction with the movable conductor. Thus an adverse effect of a current loop flowing through the movable conductor against an arc generated between movable and stationary electrodes is limited to thereby improve the circuit breaking performance.
摘要:
This invention relates to a gas generator for a seat belt retracting power generating device to supply power to an emergency retracting device of a seat belt retractor, and aims to reliably ignite an ignition agent and a driving agent by concentrating flames into a small-diameter passage when a primer is ignited, quickly supplying heat to a gas generating agent chamber, and preventing the ignition agent and driving agent within the gas generating agent chamber from being damped. This invention comprises a cylindrical casing with its one end open, a cylindrical holder chamber disposed at one end of the casing, a gas generating agent chamber which is communicated with the holder chamber via a shoulder formed on the inner wall of the casing and has a diameter smaller than the inner wall of the holder chamber, an ignition agent and a driving agent housed in the gas generating agent chamber, a primer holder which is housed in the holder chamber and has a primer chamber open toward one end of the casing, a caulking part which is formed at one end of the casing to hold the primer holder, a primer held within the primer chamber, and a small-diameter passage which is formed in the primer holder, communicates the gas generating agent chamber and the primer chamber, and has an inverted conical-shaped part having a tapered angle of 60 to 120 degrees formed at its end on the primer chamber side.
摘要:
A magnetic compensating circuit includes a magnetic sensor (1), a control circuit (2) for generating a signal for magnetic compensation, and coils (3) for magnetic compensation. The magnetic sensor has a pair of amorphous magnetic substance wires (101) arranged in parallel, coils (102) for providing the pair of amorphous magnetic substance wires with bias magnetic fields in directions opposite to each other, a high-frequency power source (105) for supplying the pair of amorphous magnetic substance wires with high-frequency currents, and circuits (106, 107, 108, 109) for outputting a potential difference derived from the output of the pair of amorphous magnetic substance wires. Thus, this magnetic compensating circuit is capable of detecting a minute external magnetic field with high accuracy.
摘要:
New types of apertures to vary the size and shape of the aperture area without the need to change the whole aperture plate in off axis lithography. The off axis illumination apertures allow the size and shape of apertures to be changed without having to change the aperture plates for each step in the lithographic process. The aperture plate is fitted with simple shutter mechanisms that allow the ready adjustment of the aperture openings.
摘要:
A method and apparatus proecsses a dot image formed of a plurality dots, each dot having a density level. In the method and appratus, a dot pattern is extracted from the dot image, which dot pattern being formed of an observation dot and dots surrounding the observation dot, it is tdetermining, based on comparison between the extracted dot pattern and predetermined reference patterns, whether or not the observation dot in the dot pattern is either a dropout dot or a projection dot, a density level of the observation dot is changed to a first density level corresponding to the dropout dot when it is determined that the observation dot is the dropout dot, and a density level of the observation dot is changed to a second density level corresponding to the projection dot when it is determined that the observation dot is the projection dot.
摘要:
Disclosed is a multi-layer type light emitting device including: at least two light emitting sources disposed to be multi-layered; and an optical surface disposed so as to correspond to each of the light emitting sources excluding one positioned at the rearmost stage for forwardly reflecting rays of light emitted by the light emitting source and transmitting rays of light emitted by the light emitting source disposed at the rear stage. With this device, rays of light emitted by each of the light emitting sources excluding one positioned at the rearmost stage are reflected from the corresponding optical surface and radiated forwardly. In this case, when a different optical surface is disposed on the front stage, the rays of light transmit the optical surface and are radiated to the exterior. In the case where rays of light emitted by the light emitting source positioned on the rearmost stage are radiated forwardly, they transmit the optical surface positioned at the front stage and are radiated to the exterior. Accordingly, rays of light emitted by the multi-layered light emitting sources are radiated from the same plane to the exterior.