Abstract: The high-frequency substrate is constructed of a base member and a conductor adhered to the base member, and the base member is composed of a polymer which is a fluoropolymer having a conductor-affinitive monomer graftpolymerized at a grafting percentage of 1% or less by weight. After reactive sites necessary for graftpolymerization are formed on a film of a fluoropolymer under an oxygen-free atmosphere by irradiating the film with an electron beam or the like, the fluoropolymer film is introduced into a solution of a conductor-affinitive monomer so as to cause graftpolymerization, and a conductor is adhered thereto to thereby produce a substrate, with a grafting percentage of the monomer to the fluoropolymer being 1% or less by weight in the graftpolymerization. The technique leads to the production of a high-frequency substrate having superior adhesion force with respect to the conductor.

Abstract: A solder ball attracting mask which is mounted on a suction apparatus for sucking a plurality of solder balls under vacuum so as to place the solder balls on electrodes of an electronic component and formed with a plurality of through-holes for attracting the solder balls thereto, with the solder ball attracting mask having a principal face engageable with the solder balls and a rear face engageable with the suction apparatus such that the through-holes extend through the solder ball attracting mask from the principal face to the rear face, the through-holes each including a funnellike attraction area for attracting the solder ball thereto, which reduces its diameter gradually from the principal face towards the rear face up to a suction port and a suction hole which has a diameter larger than that of the suction port and extends from the suction port to the rear face to define a suction space.

Abstract: A squeegee (K1-K3) for screen printing, comprising: a squeegee body (1) which is formed by a metal sheet and has a squeegeeing face (1a) and a convexly curved pressing edge (3) on the squeegeeing face (1a); wherein when the squeegee (K1-K3) is set for squeegeeing such that the squeegeeing face (1a) is oriented in a travelling direction (X) of the squeegee (K1-K3), a center (O) of curvature of the convexly curved pressing edge (3) extends substantially horizontally.

Abstract: A squeegee (K1-K3) for screen printing, comprising: a squeegee body (1) which is formed by a metal sheet and has a squeegeeing face (1a) and a convexly curved pressing edge (3) on the squeegeeing face (1a); wherein when the squeegee (K1-K3) is set for squeegeeing such that the squeegeeing face (1a) is oriented in a travelling direction (X) of the squeegee (K1-K3), a center (O) of curvature of the convexly curved pressing edge (3) extends substantially horizontally.

Abstract: An electric shaver is of a type including at least one spirally-bladed cylindrical rotary cutter cooperable with a finely perforated stationary blade foil. The shaver includes a motor casing including a drive motor accommodated therein and having first and second upright walls spaced a distance from each other and accommodated in a shaver casing with the first and second upright walls protruding upwardly outwardly from the top end of the shaver casing; and a cutter assembly including a generally U-shaped support structure having first and second arms spaced a distance from each other.

Abstract: The induction charging apparatus has a power source unit and a device unit which can be detachably coupled to the power source unit. The power source unit has a first casing having one end opened, a primary coil provided in the first casing, an oscillator for supplying an alternating current to the primary coil to generate magnetic fluxes, and a depressible member movably provided and closing the open end of the first casing. The depressible member is movable between a lift position at which the magnetic fluxes are substantially located under the depressible member, and a depressed position at which portions of the magnetic fluxes are substantially located over the depressible member. The device unit has a second casing having one end detachable to the open end of the first casing, a secondary coil provided in the second casing and adjacent to the one end, and rechargeable battery provided in said second casing for receiving power from the secondary coil.

Abstract: A spiral cutter for use in an electric razor in which the lower end of a band-shaped blade made of elastic material is embedded in the peripheral surface of a body with the band-shaped blade torsionally deformed. The spiral cutter is manufactured by the steps of: mounting a band-shaped blade made of an elastic material in a body molding die with the band-shaped blade torsionally deformed; molding a base; and removing a molded product from the body molding die after the body is molded.

Abstract: The present invention is directed to a rotary type electric razor which includes an arch-shaped external cutting edge detachably mounted on an upper side of a main body case, an internal cutting edge driving unit supported for free vertical movement with respect to the main body case, and a motor speed detecting means provided within the main body case. The internal cutting edge driving unit comprises a rotary internal cutting edge which rotates in sliding contact with respect to the internal face of the external cutting edge, an internal cutting edge driving chassis for rotatably supporting the rotary internal cutting edge, a motor mounted on the internal cutting edge driving chassis, and a drive transmitting means for transmitting the output of the motor to the rotary internal cutting edge. The motor speed detecting means comprises a rotary member mounted to the output shaft of the motor, and a photosensor opposite the rotary member.

Abstract: A rechargeable type small electric appliance including a rechargeable battery having negative and positive terminals, the negative and positive terminals being, respectively, connected to a wiring board by a pair of lead members, in which at least one of the lead members is bent in an inverse U-shape so as to have first and second pieces and a bent portion connecting the first and second pieces, the first piece being secured to the wiring board, while the second piece is clamped, at a clamp portion thereof, to a corresponding one of the negative and positive terminals, the bent portion projecting outwardly beyond the clamp portion of the second piece in a radial direction of the rechargeable battery.