Abstract: A method of producing a wood type golf club head which comprises molding and curing integrally an outer shell portion of a head main body having a hollow portion thereinside and equipped with a recess on at least one of the toe, back and heel sides thereof facing the hollow portion, from a synthetic resin as a main material, fixing a weight member having an adjustable weight into the or each recess, packing a core member into the hollow portion, and fitting a sole plate to a sole portion, and such a wood type golf club produced.

Abstract: A wood type golf club head having a crown portion in an upper part of a club head body, a sole in a lower part thereof, a face in a front side thereof, a side portion between the crown portion and sole, and a continuous ridgeline X extending from a toe side to a heel side along a boundary between the crown portion and side portion, characterized in that a height of a portion Xa of the ridgeline X on the rear side is set less than 1/4 of that H of the club head, a height of a portion Xb of the ridgeline X on the heel side being set more than 1/2 of that H of the club head, a height of remaining portions Xc, Xd of the ridgeline X being set 1/4-1/2 of that H of the club head with a total length of the last-mentioned portions Xc, Xd of the ridgeline X accounting for 60-90% of a total length of a whole ridgeline X.

Abstract: A golf club set consisting of a plurality of golf clubs having a series of continuous club numbers, characterized in that an angle of centroid defined as an angle described between an extension line of a face of a club head and a perpendicular passing through a center axis of a club shaft when the club shaft of each of the golf clubs is placed on a horizontal table with the club head thereof being suspended freely, is smaller for the golf clubs having higher club numbers and progressively larger in the order of decreasing club numbers among a plurality of the golf clubs.

Abstract: A method of producing a wood type golf club head which comprises molding and curing integrally an outer shell portion of a head main body having a hollow portion thereinside and equipped with a recess on at least one of the toe, back and heel sides thereof facing the hollow portion, from a synthetic resin as a main material, fixing a weight member having an adjustable weight into the at least one recess, packing a core member into the hollow portion, and fitting a sole plate to a sole portion of the club head.

Abstract: An iron golf club head having a sole and a hosel molded integrally as a frame from a metallic material, a core portion disposed in an upper part above the sole and the outer periphery of the core portion and the outer periphery of the frame except for the sole are covered with a fiber-reinforced resin and a weight having a greater specific gravity than the metallic material of the frame disposed between the sole and the core portion. The weight consists of a mass of 92 to 98 wt. % of powdery tungsten mixed in a polyamide resin.

Abstract: An assembly in which a touching needle and a connecting portion are arranged coaxially on a frame spaced from each other, each lead of an electric parts unit is connected to the touching needle or the connecting portion. The assembly is inserted into a probe in form of a cylinder through and end thereof, and the touching needle comes out through the other end thereof, when the assembly is fixed in the cylinder.

Abstract: This invention relates to a wood golf club and its production method, wherein an outer peripheral surface recessed from an outer surface of a club head main body through a step is formed on a neck portion of a club head made of a fiber-reinforced resin, a long-fiber-reinforced resin layer formed by winding resin-impregnated long fibers in such a manner as to cross the axial direction of the neck portion is fitted over the outer peripheral surface, and the outer surface of the long-fiber-reinforced resin layer and the outer surface of the club head main body are at substantially the same level.

Abstract: According to this invention a central conductor of a probe is connected to that of a coaxial cable by joining a shell and cylindrical metal fitting. An end of an inner insulator of the coaxial cable enters a larger diameter portion of an elastic cylinder which fits in a fixed position of the cylindrical metal fitting, a central conductor of the coaxial cable stretching further to penetrate a narrower diameter portion adjacent to the larger diameter portion. A pin is pressed into the narrower diameter portion from the other side of the larger diameter portion side. By this operation the central conductor is held tightly between the surfaces of the narrower diameter portion and the pin. When the connection of the probe and cylindrical metal fitting is completed, the pin deforms the elastic cylinder so that the central conductor of the probe contacts tightly with the pin, which enables complete conductivity between the central condutors.

Abstract: An electric parts unit is located between a pair of holders formed inside surface of a jointing portion of a frame of an assembly. When the assembly is inserted into a cylinder, a projection(s), which is on an outer surface of the jointing portion and has relation to the positions of the holders, is (are) pressed by an inner surface of the cylinder so that the jointing portion bends inward and the holders hold the electric parts unit. Therefore, even if the probe is used under a quaking condition, the electric parts unit will not be quaked so that any noise will not be produced.

Abstract: A plate to support an earth terminal of a trimmer condenser constitutes a characteristic feature of a supporting device. One side of a plate is fixed by a screw on a fixing portion higher than the floor of a chamber for an electric parts unit of a frame. On the other side of the plate is formed a leg, the lower end of which is on the floor when the plate is fixed by a screw on the fixing portion. Consequently the plate is supported by the fixing portion and the floor which enables to resist the pressure on the trimmer condenser.