A tape recorder has the capability of recording a predetermined band width of signals which is not as wide as a TV band width. To record a TV band, the signals are divided into high and low component band. The high frequency band component is recorded directly on the recording medium, and the low frequency band component is frequency modulated on a carrier wave with an index of modulation which is over unity. The lower frequency limit of the deviated carrier wave is substantially equal to or hig...

In a spark plug, a metal shell has first and second open ends. A ground electrode is formed in integral with the metal shell, provided on the first open end of the metal shell. An insulator has an axial bore, held in the metal shell. A center electrode in the bore of the insulator has a front end extending beyond the insulator. At least one row of intermediary electrode strips is arranged intermittently in a circumferential direction around an end portion of the insulator so as to form a series ...

A magnetic disk drive has a top spacer made of ceramic having a high Young's modulus, and a cylindrical clamp ring having a substantial thickness. The top spacer presses a stack of magnetic disks and spacers, which alternate with each other, over the same pressing diameter as a spindle motor. When the top spacer and clamp ring are fastened to the spindle motor by screws, they reduce the deformation of the disks.

In a first embodiment a spark plug satisfying the relations: t.gtoreq.0.3 mm and St/Sw.ltoreq.7 in which t is the axial-direction shortest distance between a leading end surface 41a of a precious metal tip 41 and a joint portion 43, St is the surface area of the precious metal tip 41 and a joint portion 43 between the precious metal tip 41 and the ground electrode body 4a, and Sw is the area of the joint portion 43 between the ground electrode body 4a and the precious metal tip 41. In a second e...

In a first embodiment a spark plug satisfying the relations: t.gtoreq.0.3 mm and St/Sw.ltoreq.7 in which t is the axial-direction shortest distance between a leading end surface (41a) of a precious metal tip (41) and a joint portion, St is the surface area of the precious metal tip (41) and a joint portion (43) between the precious metal tip (41) and the ground electrode body (4a), and Sw is the area of the joint portion (43) between the ground electrode body (4a) and the precious metal tip (41)...

An electronic device has an operating panel. A through-hole penetrating the operating panel is provided at a part of the operating panel. A partition board includes a board part and a partition part, and a step is provided between the board part and the partition part. In an area where the through-hole and the board part of the partition board are to be formed, a metal mold can be thickened. In an area where a narrow gap on a surface side of the operating panel is to be formed, the length of the...

A gaming apparatus which is equipped with a basic game and bonus games and is improved in entertainment value by adopting a new type of game development. The gaming apparatus has a display having a plurality of display areas, on which areas symbols are to be displayed, and a controller. Under specific requirements irrelevant to a result of another bonus game, there is performed a corresponding bonus game matching the requirements. Further, at least one of a plurality of bonus games (i.e., a seco...

A slot machine 10 comprises a display 20 having 3 rows by X columns (X being an integer of 5 or greater) of display regions, and a controller 50. Controller 50, in the event that bonus symbols 70, 71, and 72 are displayed in the (X-2) display regions in the center row of the 3 rows, excepting both side columns, starts a bonus game on the display. In the bonus game, the controller causes a prescribed character 66 to move on the display regions surrounding the (X-2) bonus symbols, and thereafter, ...

The spark plug has a top end portion of a main metal shell that is almost cylindrical on an outer circumferential face without having a plug attaching external thread screwed into the cylinder head. Further, the plug hole formed in the cylinder head has a top end counterpart corresponding to the top end portion of the main metal shell. And in the mounting structure of the spark plug into the cylinder head (plug hole), the clearance amount (.phi.D-.phi.d) satisfies a relation where the outer diam...

The mobile communication terminal uses a battery as a power source. The mobile communication terminal includes a detector 103, a decision section 105, a transmission-reserved controller 105, 107, and a reserved data transmission controller 105, 107. The detector 103 detects the voltage of the battery acting as a power source. The decision section 105 decides a difference relationship between a voltage level detected by the detector and a prescribed value. The transmission-reserved mail controlle...