摘要:
The present invention provides a golf club head capable of increasing carry on average even if being used by an amateur golfer who is prone to hit a ball by varied hit points of clubface. A golf club head 1 has a face part 2, a crown part 3, a sole part 4, a side part 5, and a hosel part 6, which are formed of titanium or a titanium alloy. A thick part 10 is provided near the central portion in the toe-heel direction of the rear portion of the crown part 3. The distance a between a foremost portion 10f the thick part 10 and the foremost portion of the crown part 3 is 20 to 80% of the total length L of the crown part 3.
摘要:
Provided are a bismuth-based piezoelectric material whose insulation property is improved while its performance as a piezoelectric body is not impaired and a piezoelectric device using the piezoelectric material. The piezoelectric material includes a perovskite-type metal oxide represented by the following general formula (1): Bix(Fe1-yCoy)O3 (1) where 0.95≦x≦1.25 and 0≦y≦0.30, and a root mean square roughness Rq (nm) of a surface of the piezoelectric material satisfies a relationship of 0
摘要:
The present invention can provide a polymer electrolyte membrane having power generation characteristics with a high output and long life and a polymer electrolyte fuel cell using the same. The present invention provides a polymer electrolyte membrane having a porous polymer film and a proton conducting component present in a hole of the porous polymer film, characterized in that the proton conducting component has a compound having a proton conducting group and a bicyclo ring structure.
摘要:
Provided is a piezoelectric material excellent in piezoelectricity. The piezoelectric material includes a perovskite-type complex oxide represented by the following General Formula (1). A (ZnxTi1-x))yM(1-y)O3 (1) wherein A represents at least one kind of element containing at least a Bi element and selected from a trivalent metal element; M represents at least one kind of element of Fe, Al, Sc, Mn, Y, Ga, and Yb; x represents a numerical value satisfying 0.4≦x≦0.6; and y represents a numerical value satisfying 0.1≦y≦0.9.
摘要翻译:提供压电性优异的压电材料。 压电材料包括由以下通式(1)表示的钙钛矿型复合氧化物。 A(Zn x Ti 1-x))yM(1-y)O 3(1)其中A表示至少一种至少含有Bi元素并选自三价金属元素的元素; M表示Fe,Al,Sc,Mn,Y,Ga和Yb中的至少一种元素; x表示满足0.4 <= x <= 0.6的数值; y表示满足0.1 <= y <0.9的数值。
摘要:
A nozzle structure is mounted in a compression molding machine that compresses using a punch a powder material filled in a die to manufacture a compressively molded product, and sprays a lubricant at least toward a tip of the punch prior to filling the powder material and includes a guide path that guides the lubricant, and a spraying portion that is provided at an end of the guide path so as to communicate therewith and that sprays the lubricant guided along the guide path so as to be substantially aligned with a predetermined straight line intersecting at least in a direction of relative displacement of the punch.
摘要:
An electrolyte membrane with high durability is provided. The electrolyte membrane includes a porous film containing a nitrogen-containing heterocyclic ring or a cyano group, and a proton conductive component existing in pores of the porous film, wherein the proton conductive component includes a polymer compound containing at least a nitrogen-containing heterocyclic ring, a cyano group, and an acidic group in one molecule.
摘要:
This invention provides a golf club head including a face member. The face member includes a face portion forming a face, and a crown extending portion extending backward from the upper edge of the face portion. The width of the crown extending portion in a face to back direction at the toe side is larger than that in the face to back direction at the heel side.
摘要:
The present invention provides a golf club head capable of lessening the decrease in carry even for an off-center hit. In a golf club head in which a face part 2 of a metallic head body 1 having a hollow part therein is formed with an opening 8 communicating with the hollow part, and a metallic face plate 9 is welded to the opening 8, notch parts 8A and 8B connecting with the opening 8 are formed in a part on the toe 6 side of a crown part 3 and a part on the heel 7 side of a sole part 4, respectively; and the upper end portion of the face plate 9 is extended so as to compensate the notch part 8A in the crown part 3 and welded to the notch part 8A, and the lower end portion thereof is extended so as to compensate the notch part 8B in the sole part 4 and welded to the notch part 8B.
摘要:
This invention provides a golf club head including a head main body, a face plate and a hollow portion. The head main body includes an opening in a face portion, and the opening is provided with a plurality of pawls to receive the face plate which is to fit in the opening. The pawls include a large pawl and a small pawl. The large pawl is arranged in each of a heel-side upper portion and a toe-side lower portion and the small pawl is arranged in at least either one of a heel-side lower portion and a toe-side upper portion when the opening is divided into four vertically and horizontally about a face center as the center. The face plate is fitted in the opening and fixed by welding.
摘要:
A piezoelectric element including a vibrating plate, a lower electrode, a piezoelectric film and an upper electrode laminated in this order, wherein the lower electrode, the upper electrode and the piezoelectric film are formed by a perovskite type oxide while the vibrating plate is formed by a metal oxide, and a junction interface is substantially absent between the vibrating plate and the lower electrode, between the lower electrode and the piezoelectric film and between the piezoelectric film and the upper electrode.