Abstract: A golf club head is formed from a front-face body made of a metal material, an FRP body, a metal sole plate, and a weight member. The front-face body is formed from a front-face body main body made of a crystalline metal, and a face plate which is fitted in an opening of the front-face body main body and fixedly attached thereto by means of caulking and which is made of an amorphous metal. The front-face body main body includes a face, a metal sole, a metal side portion (toe), a metal crown portion, a metal side portion (heel), and a hosel. A front edge of the sole plate and the metal sole are separated with a gap of about 4 to 12 mm therebetween, which forms the FRP body.

Abstract: A hollow golf club head having a face portion, a sole portion, a side portion, a crown portion, and a hosel portion is configured such that a principal portion of the crown portion is made of a fiber-reinforced plastic (FRP body), and the remaining portions are made of a metal (metal body). An opening is disposed in the face portion, and a face plate made of an amorphous metal is fitted therein, and fixedly attached thereto by means of caulking. The remaining portions of the metal body are made of a crystalline metal.

Abstract: A golf club head is formed from a front-face body made of a metal material, an FRP body, a metal sole plate, and a weight member. The front-face body is formed from a front-face body main body made of a crystalline metal, and a face plate which is fitted in an opening of the front-face body main body and fixedly attached thereto by means of caulking and which is made of an amorphous metal. The front-face body main body includes a face, a metal sole, a metal side portion (toe), a metal crown portion, a metal side portion (heel), and a hosel. A front edge of the sole plate and the metal sole are separated with a gap of about 4 to 12 mm therebetween, which forms the FRP body.

Abstract: An automotive air-conditioning system according to an aspect of the present invention includes a bypass passage through which cool air flows, bypassing a heating heat exchanger; a hot air passage through which hot air passing through the heating heat exchanger flows, the hot air passage has a downstream portion curved toward the bypass passage; an air mixing chamber located at a confluence of the bypass passage and the hot air passage, for mixing hot air and cool air; at least one front outlet passage diverging from the air mixing chamber toward the front side of a passenger compartment; at least one rear outlet passage diverging from the air mixing chamber toward the rear side of the passenger compartment, the at least one rear outlet passage has an upstream portion arranged along the hot air passage; a communication path configured to connect the hot air passage to a middle portion of the at least one rear outlet passage; and a door configured to open and close the communication path.

Abstract: A golf club head includes a front body formed of a metal material, an FRP body, a metallic sole plate, and a weight member. The front body has a face portion, a metal sole portion, a metal side portion (toe), a metal crown portion, a metal side portion (heel), and a hosel portion. A slight gap in a range of 4 mm to 12 mm is formed between a front side of the sole plate and the metal sole portion. This part is formed of the FRP body. Preferably, the weight of the front body is in a range of 20% to 70% of the weight of the golf club head.

Abstract: The present invention provides a golf clubhead having a head body comprising a face member fitted and secured over an aperture formed in the central area of the head body through the same, and a cavity surrounded by a sole, a toe, a heel and a top blade on a backface of the face member. Wherein the head body comprises a vertical rib extending from the top blade to the sole so as to divide said cavity into a plurality of sections and support the face member and the vertical rib has at the center thereof a means for fastening the face member, and the face member is fastened by the means to the vertical rib.

Abstract: A set of iron golf clubs permitting to hit a ball correctly with a positive ball catching and less pulling even when used by any average golfer, in which as the club number ascends, the center distance L between the axis 20 of club shaft and the center C of club head impact face 2 is gradually longer and the weight distributed on the heel 4 is gradually smaller while the weight distributed on the toe 3 is gradually larger.

Abstract: An enlarged golf club head has a front wall decreased in thickness, which is sufficient strength, easy to menufacture, and has no increase in total weight. It is a wood or iron golf club head with a plate wall made of a metal, a front side of which provides a front wall having a ball striking front face and a back face at the opposite side thereof, the back face having a plurality of ridges projecting rearwardly of the back face. The ridges extend vertically, horizontally or in both directions of the club head and are disposed at a back of at least a sweet spot of the front face.

Abstract: A golf club head has a gravity depth of 27 mm or greater and a convexed face with bulge and roll radii each equal to 9 inches or less. In an embodiment, a club head has a gravity depth of 27 mm, a bulge radius in the range of 6 to 8 inches and a roll radius of 7 to 9 inches. In another embodiment, a club head has a gravity depth of 30 to 35 mm, a bulge radius in the range of 6 to 8 inches and a roll radius of 7 to 9 inches.

Abstract: A golf club head of which the face height is larger than the sole width, a so-called "iron" club, having at least the striking face made of a copper or copper alloy or plated with a copper.

Abstract: The present invention provides a golf club head made of at least a first and second head components formed integrally with each other. A metallic material of the first head component is different in kind from that of the second head component. At an anti-disjoining device such as a projection, concavity or the like is formed, as a part of the head, on all or a part of an end face of the first head component, which is to join the second head component. Further a metallic material having a melting point 200.degree. C. or more below that of the metallic material of the first head component is cast to the first head component to integrally join the end faces of the first and second head components, thereby forming the second head component.

Abstract: The golf club set according to the present invention consists of plural golf clubs of which the lofts are increased iron a predetermined order, preferably with increments of 3.degree. to 4.degree.. The heads of golf clubs with lofts ranging from 9.degree. to 25.degree. in the set being constructed with a sole plate attached to a shell of a synthetic resin and integrally formed with a core, the heads of golf clubs with lofts ranging from 22.degree. to 31.degree. being constructed with a shell of a synthetic resin, core and sole plate formed integrally with one another, and the heads of golf clubs with lofts ranging from 28.degree. to 50.degree. being constructed with a mass of a high specific gravity synthetic resin and a sole plate molded integrally with each other.