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Patent Searching and Data


Matches 751 - 800 out of 1,389

Document Document Title
JPS57126125A  
JPS57125100U  
JPS5734960B2  
JPS57119599A
PURPOSE: To flatten frequency characteristics by inducing a voltage across an air-core coil directly by the variation of magnetic flux of an armature, thus eliminating harmful magnetic strain, and realizing flat transmission characterist...  
JPS57119996U  
JPS57109499A
PURPOSE: To output not only a monotonic sound of constant by frequency being present at 2∼5kHz but also a voice, etc. by high acoustic pressure, by use of a small-sized electromagnetic loudspeaker incorporated in an electronic timepiec...  
JPS5731840B2  
JPS5729438Y2  
JPS57101499A  
JPS5728477Y2  
JPS5728240B2  
JPS5723994Y2  
JPS5723992Y2  
JPS5723995Y2  
JPS5721918B2  
JPS5769998A
PURPOSE: To achieve a pickup cartridge with good signal separation wihtout cross talk, by oscillating a pair of independent armatures corresponding to each speed amplitude of two modulation walls of a record disc in independent magnetic ...  
JPS5754500A
PURPOSE: To form a small sized speaker operated in few mW, by improving the acoustic effect of a small sized vibration diaphragm, through the introduction of butterfly oscillation in place of piston oscillation. CONSTITUTION: A permanent...  
JPS5712359B2  
JPS5738100A
PURPOSE: Tp improve the performance of assembly and to reduce the production of mechanical strain, by using a laminated yoke which is formed by folding and piling continuous plate members formed with one thin plate member. CONSTITUTION: ...  
JPS5710159Y2  
JPS5733899A  
JPS5733900A
PURPOSE: To obtain a pickup cartridge having high efficiency, by mechanizing all the processes as a plane operation by a continuous assembling work, supplying the respective parts uniformly, and reducing the variations of its performance...  
JPS579560B2  
JPS5726987A
PURPOSE: To make stable the coupling state between an ear plug and an ear shell, by extending the ear plug to a direction with a slope to the oscillating direction of a diaphragm plate. CONSTITUTION: A diaphragm plate 1 is oscillated bas...  
JPS576880B2  
JPS5722796U  
JPS57500223A  
JPS5720408A
PURPOSE: To obtain a magnetic circuit which has small size, light weight, excellent frequency characteristic and high output voltage by melting Fe-Co-Si alloy containing Fe as main ingredient when forming a yoke forming the magnetic circ...  
JPS5714276A
PURPOSE: To allow the detection of oscillation through the output of an oscillation circuit changed with the oscillation of an oscillation plate, by locating a coil forming a resonance circuit in the oscillation circuit to an oscillation...  
JPS5714598U  
JPS56166697A
PURPOSE: To flatten sound pressure characteristics through reducing attenuation in a high frequency range and to decrease directivity, by coupling with a horn driver part a horn whose internal sectional area varies according to a specifi...  
JPS5654714Y2  
JPS56167699U  
JPS5651559B2  
JPS56153900A
PURPOSE: To reduce the magnetic loss very much, by winding the coil around the pole piece consisting of the round bar material directly to reduce the magnetic impedance between the pole piece and the coil. CONSTITUTION: The magnetic circ...  
JPS56160096U  
JPS5650553Y2  
JPS5647759B2  
JPS5647760B2  
JPS56143799A
PURPOSE: To detect a less distortion signal while widening the range by miniaturizing a vibration system by interposing signal detection coils at an interval between magnetic pole pieces projecting from both magnetic poles of a moving ma...  
JPS56141698A
PURPOSE: To sufficiently take a clearance between the surface of a record and the cartridge, and secure a vertical tracking angle, by providing no magnet nor coil on the surface of a record. CONSTITUTION: A moving magnet 14 which has bee...  
JPS56128797U  
JPS5638879Y2  
JPS56111598U  
JPS5696599A  
JPS5695190U  
JPS5690099U  
JPS5690098U  
JPS5630778B2  
JPS5687799U  

Matches 751 - 800 out of 1,389