摘要:
A golf club shaft and a golf club using such a golf club shaft are achieved in which the isotropy of the prepregs configuring a torsion rigidity holding layer is high and in which sufficient torsional rigidity can be secured with a lesser number of plies of prepregs.The golf club shaft is characterized by a torsional rigidity holding layer made of a thermosetting resin which contains reinforced fibers extending obliquely to a longitudinal direction of the shaft. The torsional rigidity holding layer includes a multilayer set prepreg, in which at least two layers of prepregs made of reinforced fibers are impregnated with a thermosetting resin. A plurality of prepregs in the multilayer set prepreg include reinforced fibers extending in mutually different directions; and the multilayer set prepreg is continuously wound by at least two turns with the plurality of prepregs layered on each other.
摘要:
An apparatus for forming a hollow FRP article by internal pressure molding includes a vacuum chamber, a forming die positioned in the vacuum chamber, a vacuum-chamber opening/closing mechanism, a composite-body support device for supporting a composite body without making the composite body come into contact with the forming die in a state where the forming die is opened by the vacuum-chamber opening/closing mechanism, the composite body including an airtight internal-pressure holding tube and a prepreg fitted on said airtight internal-pressure holding tube, an evacuation system for evacuating the vacuum chamber, an internal-pressure supplying device for applying pressure to an inside of the internal-pressure holding tube, and a controller for actuating the vacuum-chamber opening/closing mechanism to clamp the forming die to thereby bring the forming die and the composite body into intimate contact with each other.
摘要:
A 1-chip microcomputer of the present invention has (a) a monitor flag for setting a flag indicating that a specified address space is accessed, (b) an access permission address range setting register, for setting an address range in which an access is permitted while the flag is set, (c) an access permission area detection circuit for judging whether the access is made within the address range thus set, (d) an access permission setting register, for setting whether or not an access with respect to an address other than the address range should be permitted, and (e) memory read-out control circuit and memory writing control circuit for controlling an access with respect to a nonvolatile memory based on a result thus judged and content set by the access permission setting register. With the arrangement, it is possible to provide a 1-chip microcomputer that maintains the security among application programs.
摘要:
With using a boarding planned station name 211 registered by a portable information terminal 2, an information processing apparatus 4 produces vacant seat forecast information 410, including an alighting planned station name therein. While displaying this vacant seat forecast information on a terminal display portion 22, a seat-setup vacant seat information display portion 33, or a vacant seat display portion 34, a user of public transportation facilities can foresee a vacant seat. Also, she/he can reserve the seat by transmitting a user ID 215 to the communicator portion 40. Further, by changing constituent elements of the vacant seat forecast information into, not the alighting planned station name, but an arrival estimation time 420 or an alighting order 421, it is possible to promote the goodwill of providing the information for forecasting the vacant seat. Also, by use of a device, which can easily change the contents of display, as the display portion, the system can be diverted into other route, easily.
摘要:
It is object of the present invention to provide a golf club shaft superior in accuracy, minimizing a displacement between thermosetting resin layers, capable of obtaining a feeling close to the feeling of a steel shaft, and superior in stability. To solve the above problems, a golf club shaft of the present invention uses a golf club shaft comprising a torsional rigidity holding layer made of thermosetting resin including reinforcing fibers diagonally crossed in the longitudinal direction of said shaft and a UD flexural rigidity holding layer made of thermosetting resin including reinforcing fibers aligned in parallel to the longitudinal direction of said shaft, characterized in that at least a part of said torsional rigidity holding layer includes a plain weave fabric layer obtained by winding and curing like a shaft-shape a plain weave prepreg which lets a plain weave fabric having mutually woven warps and wefts impregnate with thermosetting resin in such a way that said warps and wefts are diagonally crossed in the longitudinal direction of said shaft.
摘要:
A method is disclosed for producing a resin-composite profile. The method comprises providing an aluminum profile having a coating film that is capable of forming a functional group which reacts with isocyanate. A discharge treatment is performed on the film wherein the treated surface is capable of reacting with isocyanate. A urethane resin substantially formed of isocyanates and polyol is joined to the discharge treated surface.
摘要:
An object is to achieve a golf club shaft and a method of producing the same, wherein the weight balance in the shaft longitudinal direction can be reproducibly and easily set and wherein the golf club shaft is produced at a low cost and has high durability. The golf club shaft includes a hollow-cylindrical shaft body made of fiber-reinforced resin and a weight-adding cylinder installed in a cylindrical space of the shaft body. At least a part of an outer diameter side of the weight-adding cylinder is embedded in an cylindrical embedded recess that is formed in an inner wall of the shaft body, wherein a grip-side cylindrical end surface of the weight-adding cylinder and a grip-side cylindrical end surface of the cylindrical embedded recess are in contact with each other.
摘要:
A golf club shaft formed by winding prepregs made of uncured thermosetting resin into a tapered shape and curing the prepregs thermally, the prepregs include a first woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that are impregnated with uncured thermosetting resin, and a second woven fabric prepreg which is made of one of a triaxial woven fabric or a tetra-axial woven fabric that are impregnated with uncured thermosetting resin.
摘要:
A golf club shaft is provided in which the flexural rigidity of the distal end portion can be improved with no change in flexural rigidity on the proximal end while the dispersion in the values of the flexural rigidity in the circumferential direction can be reduced without the use of a distal-end reinforcing layer that causes discontinuous points in the lengthwise direction in flexural rigidity. A golf club shaft is provided which satisfies the following conditions: that the golf club shaft includes at least three rectangular carbon prepregs as full-length layers, that all the rectangular carbon prepregs are each composed of a 0-degree layer, the long fiber direction of which is coincident with the longitudinal direction of the golf club shaft, that all the rectangular carbon prepregs are configured such that the amount of overlapping of each rectangular carbon prepreg is zero on the large-diameter proximal end portion of the gold club shaft and increasingly overlaps at positions increasingly toward the distal end of the golf club shaft, and that wind start positions of the rectangular carbon prepregs are different from one another.
摘要:
A golf club shaft is provided in which the flexural rigidity of the distal end portion can be improved with no change in flexural rigidity on the proximal end while the dispersion in the values of the flexural rigidity in the circumferential direction can be reduced without the use of a distal-end reinforcing layer that causes discontinuous points in the lengthwise direction in flexural rigidity. A golf club shaft is provided which satisfies the following conditions: that the golf club shaft includes at least three rectangular carbon prepregs as full-length layers, that all the rectangular carbon prepregs are each composed of a 0-degree layer, the long fiber direction of which is coincident with the longitudinal direction of the golf club shaft, that all the rectangular carbon prepregs are configured such that the amount of overlapping of each rectangular carbon prepreg is zero on the large-diameter proximal end portion of the gold club shaft and increasingly overlaps at positions increasingly toward the distal end of the golf club shaft, and that wind start positions of the rectangular carbon prepregs are different from one another.