Shinichiro Ito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: The present invention provides a coil device including magnetic cores having gap regions and a coil wound to contain the gap regions. The present invention provides an improvement in which a shape of at least one of the opposing magnetic cores forming the gap regions is formed into a curve of logarithmic function from its base end to its extreme end, its most extreme end is provided with a gap adjusting flat surface and then a plurality of gaps are formed in the gap regions.With such an arrangement as above, the present invention provides the coil device capable of reducing a leakage magnetic flux produced around the gaps, preventing an abnormal generation of heat of the coils and further preventing a bad influence of noise against a peripheral apparatus.
Abstract: A coil device includes two magnetic cores each having a U-shape in section forming a closed magnetic path therein with their legs being opposed to each other and having a gap in such path, and a coil wound so as to cover the gap. In this structure, the mutually opposed portions of the magnetic cores in the region to form the gap are so shaped that the cross-sectional area of the fore end becomes smaller than that of the base end, thereby preventing concentration of any leakage magnetic flux on the gap portions while averting abnormal generation of heat in the coil to consequently eliminate harmful influence of noise on peripheral apparatus or components.
Abstract: A coaxial dielectric resonator for use at high frequency. The outer or inner peripheral surface of a tubular dielectric member is stepped so as to provide a greater suppression of spurious resonance. The dielectric member has a prism-shaped outer configuration so as to provide a high Q value, as well as improved space factor.
July 5, 1989
Date of Patent:
January 15, 1991
Matsushita Electric Industrial Co., Ltd.
Abstract: A control switch for a motor driven remote control mirror device in a vehicle has a switching control circuit for connecting motors for driving a mirror to be tilted to a DC power source. The control circuit has first and second stationary contact to be connected with one terminals of the motors for tilting the mirror around horizontal and vertical axes, and a third stationary contact to be commonly connected to the other terminals of the motors, the contacts are selectively connected with the negative and positive polarities of a power source by bridge members disposed corresponding to the contacts. The bridge members ordinarily connect the contacts to the negative polarity of the power source, and connect, when elastically deformed, to the positive polarity. A push plate is elastically supported by the bridge members, has a leg for operating the bridge members on the back surface, and the relative bridge member is operated by pressing the direction indication unit of the push plate.