Bridgestone Sports Co., Ltd.

Honda Motor Co., Ltd.

Texas Instruments Corporation

Hiroshi Takahashi

Hideo Matsunaga

Fumiaki Sato

Wataru Ban

Kozue Wada

Masayuki Hattori

Kenichi Shuto

Koji Kasai

Toshihiro Takahashi

Tetsu Wada

Shinichi Ide

Tetsuro Ikeno

Shoji Hasei

Makoto Kubota

Hiroshi Mizuguchi

Kenichi Tashiro

Takashi Idegomori

Shinsuke Fujiyama

Wataru Shimazaki

Tsuginori Usami

Keisuke Kagami

Hiromi Ura

Kayoko Ozawa

Nobutaka Tsutsumi

Tatsuya Miyazawa

Tomonoric Ikuma

Kouji Kasai

A casting device capable of manufacturing products in a short cycle time; and a casting method using this casting device. The casting device includes: a pressurized furnace; a mold having a cavity formed therein; a stalk; at least a first hot water tap in a cylindrical shape connecting the cavity and an end of the stalk on the downstream side in the molten metal filling direction and guiding the molten metal supplied to the stalk to inside the cavity; and a filter member provided in the first hot water tap. The filter member includes a flange extending along the extension direction of the first hot water tap and abutting an inner wall surface of the first hot water tap. A coolant passage having coolant flowing therethrough is provided in the vicinity of the inner wall surface.

Casting device and casting method

A casting device is provided with: a pair of cylinders; a core pin holding member to which core pins are attached; and a pair of bent members. The cylinder is disposed in parallel with a second limb of the bent member, and a rod is coupled to a surface on the inner side of a first limb of the bent member. The second limb is coupled to the core pin holding member via a coupling mechanism so as to be freely attachable to/detachable from the core pin holding member.

Casting device

A casting device is provided with: a positioning member that is provided to a base and comes into contact with an upper mold and a slide member to define the positions of the upper mold and the slide member at the time of mold clamping; and a restraining force-applying mechanism for applying a restraining force to the slide member in a direction opposite a pressing force acting on the positioning member from the slide member at the time of mold clamping of the slide member.

Provided is a casting dieincluding a base, a lower mold, a horizontal sliding mold, and an upper mold. The lower moldis configured by a lower mold bodyand a lower mold stage. A guide memberis mounted on the lower mold stageso as to freely move in the up and down direction with respect to the lower mold stage. The horizontal sliding moldis configured to slide on the guide memberand the lower mold body. The guide memberis provided with a locking partwhich locks with a lateral edge part of the lower mold bodywhen the lower mold bodyis separated upward from the lower mold stage, so that the lower mold bodyand the guide memberseparate upward together.

Casting die

Provided is a casting mold including a lower moldfixed on a base, a plurality of horizontal sliding moldstowhich slide freely on the basebetween a mold-opening position and a mold-closing position, an upper mold, and sliding mechanismswhich slide the horizontal sliding moldstoin the sliding directions. When sliding the horizontal sliding molds from the mold-opening position to the mold-closing position, the sliding mechanismscause force to act on a lower section of the horizontal sliding moldstoand prevent force from acting on an upper section of the horizontal sliding moldsto

Casting mold

Provided is a low-pressure casting apparatus for stable casting without using feedback control even if a furnace body has a crack, and a low-pressure casting method using the same. A low-pressure casting apparatus fills a cavity with molten metal M through a guiding unit by introducing gas into a holding furnace for heating the molten metal M to apply pressure to a surface of the molten metal M. The holding furnace includes a casing, a furnace body accommodated in the casing, and a refractory layer disposed between the casing and the furnace body, the refractory layer having a pore structure. The low-pressure casting apparatus further includes a first gas supply unit for supplying to the furnace body the gas to apply pressure to the molten metal M and a second gas supply unit for supplying gas to the refractory layer.

Low-pressure casting apparatus and low-pressure casting method using the same

An oil storing device includes a body portion. The body portion is formed at its one end with an engaging portion having an oil supply port for supplying engine oil and an oil return port for introducing the engine oil. The engaging portion is detachably connected to a connecting portion of a crankcase. Oil storing chambers for storing the engine oil are formed in the body portion so as to be connected to the oil supply port and the oil return port. When the engaging portion is engaged with the connecting portion of the crankcase, the oil supply port is connected to an inlet port leading to an oil pump, and the oil return port is connected to an outlet port to the crankcase.

Oil storing device and engine having the same

A golf club head with a leading end of a shaft mountable thereon, the golf club head includes: a head main body, formed with a hosel insertion hole; a hosel, formed with a shaft case insertion hole and removably mounted in the hosel insertion hole; and a shaft case, formed with a shaft insertion hole and removably mounted in the shaft case insertion hole.

Golf club, head of golf club and method for adjusting properties of golf club

A golf club head includes: a head main body having a shaft holder inserting hole; a shaft holder which has a shaft inserting hole and is attachably and detachably installed in the shaft holder inserting hole; a bolt inserting hole which penetrates from a sole side of the head main body to the shaft holder inserting hole; and a bolt which is inserted into the bolt inserting hole, screwed into the shaft holder, and fixes the shaft holder to the head main body, an axis center of the shaft inserting hole and an axis center of the shaft holder inserting hole being non-coaxial shapes, wherein a lower end side of the shaft holder and an inner portion of the shaft holder inserting hole are polygonal sectional shape portions and are engaged with each other.

Golf club head and golf club

A golf head club has a high moment of inertia and thus produces a pleasing hitting sound. A metallic golf club headhaving a hollow space therein includes a face memberprovided with a face part, and a body memberprovided with a sole part, a crown part, a side part, and ribs. The hollow space is defined by the inner surfaces of the face part, the sole part, the crown part, and the side part, and the wall surfaces of the ribs. The ribsextend from the inner surface of the sole partto the inner surface of the crown part, and the body memberis molded integrally by casting.

Golf club head

A golf club, includes: a head; a shaft; a shaft case, having a cylindrical shape and fixed to a leading end of the shaft, a hosel, mounted on the head, wherein: the shaft case is inserted into the hosel from an upper end of the hosel; and the shaft case is fixed to the hosel so that an insertion depth of the shaft into the hosel is changed.

Golf club, method for changing shaft insertion depth of golf club, and method for replacing shaft of golf club

According to one aspect of the invention, a golf club includes: a head having a hosel having a hosel hole; a shaft; a shaft case having a shaft insertion hole to which one end of the shaft is inserted and configured to be inserted to the hosel hole; and a ring-shaped screw member configured to be screwed into one end of the hosel to fix the shaft case in the hosel hole, and to be fitted with an outer face of an one end of the shaft case so as not to contact with the shaft directly, wherein an axis of the shaft insertion hole is nonparallel to an axis of the hosel hole, and an inner face of the hosel hole and an outer face of the shaft case includes a triangular or more polygonal cross-sectional face that is perpendicular to the axis of the hosel hole.

Golf club and method for adjusting properties thereof

A golf club head having a hollow construction produces a characteristic low ball hitting sound to accommodate the diversity of golfers' preferences for ball hitting sounds even if the volume of the golf club head is increased to 430 to 500 cc and the weight thereof is decreased to 160 to 220 g. In a golf club head having a hollow construction and including a face part, a sole part, a crown part, and a side part, in which the head volume is 430 to 500 cc, and the head weight is 160 to 220 g, the area of the sole part is increased so that the primary natural frequency of the sole part is 2400 Hz or less, and a weight is formed at a position of the center of vibration in the sole part on the inner surface on the hollow construction side of the sole part.

A golf club head includes a face member having a ball-striking face and an oval thick portion positioned in a central portion of the ball-striking face. The oval thick portion has an oval shape having recesses formed by recessing both sides in a major axis direction in an arc-shaped fashion. The recesses are directed to a toe-side upper portion and a heel-side lower portion. The thickness of the thick portion becomes thickest at a central portion and is gradually reduced from the central portion towards the periphery. The face member is formed such that a portion outside the thick portion is thinner than the thick portion. An occupancy rate of the oval thick portion in the ball-striking face is in a range of 25 to 45%.

Growing community of inventors

Chichibu, Japan

Hiroshi Takahashi