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Patent Searching and Data


Matches 701 - 750 out of 1,365

Document Document Title
JPS5854199U  
JPS5860900A  
JPS5859699A
PURPOSE: To realize a low resonance frequency and a high efficiency, by reducing the diameter without damaging the elasticity of the diaphragm and holding the magnetic coupling strong. CONSTITUTION: An electromagnetic electroacoustic tra...  
JPS5816399B2  
JPS5811158B2  
JPS5829299A
PURPOSE: To elevate power generation efficiency, to suppress deterioration of a characteristic due to a variation of stylus pressure, and also to make a magnet and a vibration system light in weight, by placing a pair of magnets, and yok...  
JPS5829298A
PURPOSE: To make a magnet and a vibration system light in weight, by placing yokes so as to place a plate-like armature of a cantilever rear end part between them and placing an inverted U-type magnet so as to step over the cantilever, b...  
JPS585276Y2  
JPS584319Y2  
JPS582518B2  
JPS586700A
PURPOSE: To reduce unevenness of sound pressure aproximately at a resonance point and to decrease a distortion factor, by using a printed substrate as the 1st diaphragm, sticking the circumference to a resonator by ultrasonic-wave weldin...  
JPS581021Y2  
JPS57202297U  
JPS57202298U  
JPS5754392Y2  
JPS57180299A  
JPS5750400B2  
JPS5748159Y2  
JPS57153400U  
JPS57152973U  
JPS57151099U  
JPS57146499U  
JPS57143796U  
JPS57143999A  
JPS57129600A
PURPOSE: To reduce the effective mass and to realize a flat and wide range of the frequency characteristics, by constituting an armature with an amorphous metal. CONSTITUTION: The yokes 12 and 13 are attached across a magnet 11. A cantil...  
JPS5737159B2  
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...  

Matches 701 - 750 out of 1,365