Abstract: The invention offers a superconducting coil, which is an oxide superconducting coil 10 that has the shape of a saddle formed by winding an oxide superconducting wire 11 in the shape of a racetrack and that has a curved portion 10b and a linear portion 10a connected to the curved portion 10b. At least in the central portion of the linear portion 10a, an upper end 10d is positioned at the inner-circumference side in comparison with a lower end 10e. Having the foregoing configuration, the superconducting coil formed of an oxide super-conducting wire can suppress the reduction in its electrical property caused by the lines of magnetic flux when used in a rotating machine such as a motor. The invention also offers a superconducting-coil assembly formed by using the foregoing superconducting coils and a rotating machine incorporating the foregoing superconducting coil (superconducting-coil assembly).

Abstract: The invention offers a container for a superconducting apparatus and a superconducting apparatus. The container mounts in it a superconducting coil as a member including a superconductor. The container is provided with a vacuum insulated container 20 as a housing case made of resin and provided with an opening, a lead electrode 50 as a metal member positioned such that it passes through the opening, and a combination of connecting members 63 and 65 that covers the opening, that connects the lead electrode 50 to the vacuum insulated container 20, and that is provided with a curved portion as a thermal-stress-alleviating portion. Having the foregoing structure, the container can suppress the development of separation and cracks at the portion where the metal member passes though and is fixed to the wall of the container that mounts in it a superconductor such as a superconducting coil.

Abstract: A golf club 2 is provided with a head 4 having a hosel hole 18 and a shaft 6. The golf club 2 has a mounting/detaching mechanism detachably mounting the head 4 and the shaft 6 to each other. The mounting/detaching mechanism can fix the shaft 6 to the hosel hole 18 of the head 4 at a plurality of circumferential mounting positions. The shaft 6 has anisotropy producing coupled deformations of bending and torsion. Preferably, an angle ?1 between an axis line of the shaft 6 and an axis line of the hosel hole 18 is 0 degree. Preferably, a bending torsional amount of the shaft 6 is equal to or greater than 0.5 degree.

Abstract: In a golf club head, a horizontal direction oriented from the toe side toward the heel side is defined as an X direction, while a vertical upward direction is defined as a Y direction; and the coordinate of the center of the hit face is defined as (0, 0); the coordinate of the sweet spot is defined as (x1, y1); and the coordinate of the maximum resilience point on the hit face is defined as (x2, y2). In this golf club head, x1 is +3 mm or greater and +8 mm or less, and x2 is ?5 mm or greater and +2 mm or less. Preferably, the shortest distance D1 between the axis line of the shaft hole and the center of gravity G of the head is 33 mm or greater and 44 mm or less. Preferably, when the face member is divided into a toe portion and a heel portion by a plane that passes the center of the hit face along the Y direction, the area mean thickness Tt of the toe portion is smaller than the area mean thickness Th of the heel portion.

Abstract: A wood-type golf club head has a volume V (cc) of not less than 350 cc and a club face area S (sq.cm) of not less than 30 sq.cm but not more than V×0.08+5. Preferably, the weight of the face portion is in a range of from 20 to 40% of the overall weight of the club head, and the overall weight is in a range of from 150 to 210 grams.

Abstract: A golf club head has a hollow shell structure comprising: a main frame provided with three independent openings which are a front opening, a top opening and a bottom opening; a face plate covering the front opening; a crown plate covering the top opening; and a sole plate covering the bottom opening. The specific gravity Gc of the crown plate, the specific gravity Gf of the face plate and the specific gravity Gs of the sole plate are each smaller than the specific gravity Gm of the main frame. Preferably, the specific gravity Gc is smaller than the specific gravity Gf and smaller than the specific gravity Gs, and the main frame is made of a metal material. Therefore, the freedom of designing the center of gravity the club head can be increased.

Abstract: A hollow wood-type golf club head with stable flight direction and flight distance performances, the club head having a moment of inertia Ix 4,000 to 5,900 g·cm2 about a vertical axis passing through the club head's center of gravity, and comprising a face with face bulge and face roll such that the radius of curvature Rx of the face bulge is from to 25 inches, and the Ry/Rx ratio of the radius of curvature Ry of the face roll to the radius of curvature Rx of the face bulge is 0.50 to 0.90.

Abstract: A power magnetic core has a start section and a termination section. In the powder magnetic core, lines of magnetic force are formed from the start section to the termination section. The powder magnetic core comprises a first portion disposed on the shortest magnetic path of the lines of magnetic force that connects the start section and the termination section and having a permeability ?a and a second portion disposed apart from the shortest magnetic path of the lines of magnetic force and having a permeability ?b greater than ?a. With this constitution, a desired magnetic characteristic is achieved, and the iron loss is sufficiently reduced.

Abstract: A wood-type hollow golf club head comprises a face having a specific thickness distribution, wherein average thicknesses tUTP, tUCP, tUHP, tMTP, tMCP, tMHP, tLTP, tLCP and tLHP of an upper toe portion UTP, upper central portion UCP, upper heel portion UHP, middle toe portion MTP, middle central portion MCP, middle heel portion MHP, lower toe portion LTP, lower central portion LCP, and lower heel portion LHP, respectively, of the face satisfy the following conditions: (a) tUTP<tUCP>tUHP; (b) tMTP<tMCP>tMHP; (c) tLTP<tLCP>tLHP; (d) tUTP>tMTP<tLTP; and (e) tUHP>tMHP<tLHP, and further, in the above nine average thicknesses, (f) the largest average thickness is 2.8 to 3.5 mm; and (g) the smallest average thickness is 1.6 to 2.3 mm.

Abstract: To provide a core component for making it possible to enhance the space factor of a conductor wire in a storage section, a motor component including the core component, and a forming method of the motor component, the motor component includes a core component 10 shaped like a letter T in transverse cross section and a coil made of a conductor wire 200 wound on a tooth 11 of the core component 10. The core component 10 includes the tooth 11, an outer peripheral piece 12 placed on one end side of the tooth 11, and an inner peripheral piece 13 placed on an opposite end side of the tooth, and a space surrounded by the outer peripheral surface of the tooth 11, an opposed face 12a of the outer peripheral piece 12 to the inner peripheral piece, and an opposed face 13a of the inner peripheral piece 13 to the outer peripheral piece is a coil storage section 14.

Abstract: In a golf club head, a horizontal direction oriented from the toe side toward the heel side is defined as an X direction, while a vertical upward direction is defined as a Y direction; and the coordinate of the center of the hit face is defined as (0, 0); the coordinate of the sweet spot is defied as (x1, y1); and the coordinate of the maximum resilience point on the hit face is defined as (x2, y2). In this golf club head, x1 is +3 mm or greater and +8 mm or less, and x2 is ?5 mm or greater and +2 mm or less. Preferably, the shortest distance D1 between the axis line of the shaft hole and the center of gravity G of the head is 33 mm or greater and 44 mm or less. Preferably, when the face member is divided into a toe portion and a heel portion by a plane that passes the center of the hit face along the Y direction, the area mean thickness Tt of the toe portion is smaller than the area mean thickness Th of the heel portion.

Abstract: A wood-type golf club head comprises a hollow structure having a geometrical arrangement for improving the directionality and carry distance of the struck ball, wherein the ratio (W/L) of a size (W) of the head in the back-and-forth direction to a size (L) of the head in the toe-heel direction is 0.85 to 1.0; and the ratio (FP/GL) of a face progression (FP) of the head to a depth (GL) of the center of gravity of the head is 0.50 to 0.75.

Abstract: An electric rotating machine includes a case, a stator, a rotor and an oil. The stator is comprised of a stator core and a coil. The oil has a volume resistivity ranging from 102 to 109 ?cm and is reserved in a bottom part of the case. The coil is partially immersed in the oil.

Abstract: A wood-type hollow golf club head comprises a face having a specific thickness distribution, wherein average thicknesses tUTP, tUCP, tUHP, tMTP, tMCP, tMHP, tLTP, tLCP and tLHP of an upper toe portion UTP, upper central portion UCP, upper heel portion UHP, middle toe portion MTP, middle central portion MCP, middle heel portion MHP, lower toe portion LTP, lower central portion LCP, and lower heel portion LHP, respectively, of the face satisfy the following conditions: (a) tUTP<tUCP>tUHP; (b) tMTP<tMCP>tMHP; (c) tLTP<tLCP>tLHP; (d) tUTP>tMTP<tLTP; and (e) tUHP>tMHP<tLHP, and further, in the above nine average thicknesses, (f) the largest average thickness is 2.8 to 3.5 mm; and (g) the smallest average thickness is 1.6 to 2.3 mm.

Abstract: A wood golf club (10) which is not less than 44 inches in a length thereof and whose head (14) is not less than 190 g in a weight thereof. The value of a ratio of a rigidity value EIt at a position spaced at an interval of 130 mm from a head-side front end of a shaft (11) of the golf club (10) to a rigidity value EIb at a position spaced at an interval of 250 mm from a grip-side rear end of the shaft (11) is set to not less than 0.50.

Abstract: A golf club comprises a club shaft having a tip end and a butt end, a club head being attached to the tip end of the club shaft, and a golf grip being attached to a region of the club shaft extending from the butt end toward the tip end of the club shaft, the grip having an end by the side of the butt end of the club shaft, wherein the club head has an moment (M) of inertia around a center line of the club shaft of not less than 6500 g·cm2, and the club shaft has a bending stiffness (E) of not less than 5.0×106 kgf·mm2 at the position which separates 200 mm from the end of the grip toward the club head.

Abstract: A wood-type golf club head has a hollow shell structure having a head length L (mm), a head-depth W (mm) and a sweet spot height H (mm) which satisfy: 0.80?W/L?1.0 and H?76×(W/L)?31. The head length L is the distance between the clubshaft axis CL and a point T farthest from the clubshaft axis CL. The head depth W is the distance between a plane FP tangent to the sweet spot SS and a point B farthest from the plane FP.

Abstract: A reference state is envisioned in which a golf club is placed on a horizontal plane P with a predetermined lie angle and face angle, and the shaft axis line thereof is disposed within a reference plane that is perpendicular to the horizontal plane P. A center of gravity of the head G is positioned on the back side of the head from the reference plane, and a depth of the center of gravity D that is a distance between the reference plane and the center of gravity of the head G is 20 mm or greater and 30 mm or less. The golf club has a flexural rigidity value EIt (kgf·mm2) of the shaft at a position T3 140 mm away from the tip on the head side being 0.5×106 or greater and 1.75×106 or less. More preferably, a value of a ratio (GIt/EIt) of the flexural rigidity value EIt to a torsional rigidity value GIt of the shaft at a position 140 mm away from the tip on the head side is specified to be 0.8×10?2 or greater and 1.2×10?2 or less.

Abstract: A power magnetic core has a start section and a termination section. In the powder magnetic core, lines of magnetic force are formed from the start section to the termination section. The powder magnetic core comprises a first portion disposed on the shortest magnetic path of the lines of magnetic force that connects the start section and the termination section and having a permeability ?a and a second portion disposed apart from the shortest magnetic path of the lines of magnetic force and having a permeability ?b greater than ?a. With this constitution, a desired magnetic characteristic is achieved, and the iron loss is sufficiently reduced.

Abstract: The invention prevents a crimple from being generated in a resin member. The invention provides a golf club head (1) including a head shell portion (M) made of a metal material and having an opening portion (O1), and a resin member (FR) made of a fiber reinforced resin arranged in the opening portion (O1), and provided with a hollow portion in an inner portion. The resin member (FR) is constituted by a molded body formed by integrally molding a laminated body of plural layers of prepregs having a magnitude covering the opening portion (O1) and having different resin percentage contents in the head shell portion in accordance with an internal pressure molding method. Further, the prepreg having the largest resin percentage content is used in an innermost layer of the laminated body closest to the hollow portion.