| Fujikura Rubber Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120091610 | DEVELOPING BLADE AND ITS MANUFACTURING METHOD - A method for manufacturing a developing blade including a blade member located along one side edge of a support member, comprising providing a top mold with a cavity, sandblasting the cavity with an abrasive in a range of #150 to #1000, clamping together the top mold and a bottom mold while the top mold is in alignment with the bottom mold while at least a part of the support member is positioned in the cavity, and pouring a molding material from a gate to fill the cavity. | 04-19-2012 |
| 20110281061 | METHOD FOR PRODUCING FRP CYLINDER AND FRP CYLINDER - A method is provided for producing a weight-reduced FRP cylinder which can attain high strength, and also such an FRP cylinder is provided. This FRP cylinder producing method, in which a plurality of prepregs formed by impregnating reinforced fibers with thermosetting resin sheets are wound into a cylinder and thermally cured to be formed as a plurality of FRP layers, includes a simultaneous multilayer winding process in which a torsional rigidity retaining prepreg and a buckling prevention prepreg are continuously wound a plurality of turns with being layered on each other when the plurality of prepregs are wound into a cylinder, wherein the torsional rigidity retaining prepreg includes a layer of fibers oblique to a cylindrical axis direction of the FRP cylinder, and wherein the buckling prevention prepreg includes a layer of fibers orthogonal to the cylindrical axis direction. | 11-17-2011 |
| 20110151991 | Golf Club Shaft - 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. | 06-23-2011 |
| 20110062365 | POWER-ASSISTED ON/OFF VALVE - A power-assisted mechanism having a simple structure which can perform a power-assisted operation can be achieved in a power-assisted on/off valve including a valve stem which opens and closes a flow passage, an operational member which is positioned on an axis of the valve stem and is relatively movable with respect to the valve stem, and a power-assisted mechanism which reduces the speed and power-assists the movement of the operational member, and transfers the movement of the operational member to the stern valve. | 03-17-2011 |
| 20100234124 | GOLF CLUB SHAFT AND GOLF CLUB - 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. | 09-16-2010 |
| 20100166467 | DEVELOPING BLADE AND ITS MANUFACTURING METHOD - A developing blade ( | 07-01-2010 |
| 20100116438 | METHOD AND APPARATUS FOR FORMING A HOLLOW FRP ARTICLE BY INTERNAL PRESSURE MOLDING - 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. | 05-13-2010 |
| 20100081516 | GOLF CLUB SHAFT AND GOLF CLUB USING THE SAME - 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. | 04-01-2010 |
| 20100031813 | RODLESS CYLINDER DEVICE - A rodless cylinder device includes a piston body integrated with the central top portion of a rolling diaphragm, a cylinder body which fixes the circumferential annular fixing portion of the rolling diaphragm and in which the piston body is fitted to be freely movable, a slit which is formed in the cylinder body to extend therethrough and elongated in an axial direction, an inner-to-outer connector fixed to the piston body and projecting outwardly through the slit, an external moving body positioned outside the cylinder body and fixed to the inner-to-outer connector, and a supply and exhaust mechanism, formed between the rolling diaphragm, the cylinder body and the piston body, the supply and exhaust mechanism supplying and exhausting a pressure fluid to and from a pressure chamber. | 02-11-2010 |
| 20100029811 | RUBBER COMPOSITION AND A SEALING MEMBER USING THEREOF - A rubber composition comprising a flexible rubber which includes a rubber component and softener, and at least two kinds of carbon blacks having different particle sizes from each other. And a sealing member including a rubber composition comprising a flexible rubber which includes a rubber component and a softener, and at least two kinds of carbon blacks having different particle sizes from each other. | 02-04-2010 |
| 20090302256 | PRESSURE REDUCING VALVE - A pressure reducing valve includes a opening/closing valve between primary and secondary pressure chambers, a diaphragm body, a valve hole through which the secondary pressure chamber is communicatively connected with the atmosphere, a relief valve which opens/closes the valve hole, and a linkage member which links the opening/closing valve with the relief valve so as to open/close in association with each other. The linkage member includes a valve guide having a valve passage through which the primary and secondary pressure chambers are communicatively connected, and a pintle inserted into a pintle hole and guided thereby. The opening/closing valve and the relief valve are provided on lower and upper ends of the pintle, respectively. The valve hole has a common axis with those of the valve passage and the pintle hole. One and the other of the valve guide and the pintle are made of resin and metal. | 12-10-2009 |
| 20090107564 | RELIEF VALVE - The objective of the invention is to achieve a general-purpose relief valve which can be used irrespective of the diameter or thread shape of an associated relief conduit and whose relief pressure can be easily adjusted. | 04-30-2009 |
| 20090050832 | NORMALLY-CLOSED VALVE HAVING A MICROFLOW RATE ADJUSTING DEVICE - A normally-closed valve having a microflow rate adjusting device includes a valve stem for opening and closing a fluid passage; a biasing device for biasing the valve stem in a direction to close the fluid passage; a piston body which is engaged in a cylinder in an air-tight manner to form a pressure chamber for moving the valve stem in a valve opening direction against the biasing device; and a stopper mechanism, provided on the cylinder, for controlling a limit of movement of the piston body in the valve opening direction. The stopper mechanism comprises a stroke adjustment member which is screw-engaged with the cylinder coaxially with the valve stem so that a position of the stroke adjustment member relative to the cylinder can be adjusted, and includes an annular tapered surface at an end of the stroke adjustment member which faces the piston body. A movable valve opening control surface provided on the piston body to be positioned radially outside of the annular tapered surface; a stationary valve opening control surface provided integrally with the cylinder to face the movable valve opening control surface, at least one of the movable valve opening control surface and the stationary valve opening control surface comprising a tapered surface which is tapered to reduce a distance between the movable valve opening control surface and the stationary valve opening control surface in a direction toward an outer edge of the tapered surface; and a plurality of balls capable of coming in simultaneous contact with each of the annular tapered surface, the movable valve opening control surface and the stationary valve opening control surface. | 02-26-2009 |
| 20090032751 | FLUID CONTROL VALVE - An object of the present invention is to obtain a quick-response fluid control valve. | 02-05-2009 |
| 20090016780 | DEVELOPING BLADE - The blade member of the invention is composed mainly of silicone rubber and contains as an additive component at least one selected from the group consisting of ultra-high molecular-weight-polyethylene, carbon nanotube, and fullerene. It is thus possible to decrease the coefficient of friction of silicone rubber in a practical range and without detrimental to its flexibility or other physical properties to let the developing blade slip off more, thereby diminishing the amount of abrasion of the rubber and improving on the robustness of the developing blade without detrimental to image quality. Decreasing the coefficient of friction to let the developing blade slip off more has additional advantages: a decrease in the force of contact of the developing blade with a developing roll, which contributes more to energy savings resulting from the size reductions of a driving motor, and making the developer equipment compact. | 01-15-2009 |
