Hitoshi Muramatsu
Hitoshi Muramatsu, Shizuoka JP
Patent application number | Description | Published |
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20090269995 | BOAT - A boat includes a connection structure that connects couplings via a transfer shaft on a rear end portion of a crankshaft extending rearward from an engine. The crankshaft and the transfer shaft are connected by screwing an external thread and a front internal thread, and the transfer shaft and the couplings are connected by screwing an external thread and an internal thread. There are provided an inner bolt that strengthens the connection between the external thread and the front internal thread, an end bolt that strengthens the connection between the transfer shaft and the couplings, and an outer nut that strengthens the connection between the crankshaft and the transfer shaft. The boat can prevent movement between the crankshaft and an intermediate member and between the intermediate member and a coupling both in a rotational direction and in an axial direction without causing an increase of processing time or processing cost. | 10-29-2009 |
20100151752 | WATER JET PROPULSION WATERCRAFT - A water jet propulsion watercraft includes a hull, an engine attached to the hull, a jet propulsion device arranged to be driven using an output of the engine and to jet water toward a rear of the hull from a jet port provided on an outer side of the hull, a bucket arranged to be disposed in a manner enabling movement between a forward drive position of not blocking the water jetted from the jet port of the jet propulsion device and a reverse drive position of blocking the water jetted from the jet port and, at the reverse drive position, to convert a jetting direction of the water jetted rearward from the jet port to a forward direction, a hydraulic cylinder arranged to be disposed in an interior of the hull and to move the bucket between the forward drive position and the reverse drive position, and an oil passage arranged to connect the engine and the hydraulic cylinder and to cause a lubricating oil inside of the engine to pass through as a hydraulic oil of the hydraulic cylinder. | 06-17-2010 |
Hitoshi Muramatsu, Hamamatsu-Shi JP
Patent application number | Description | Published |
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20090277786 | PLATING PROCESSING LINE - A plating processing line or system includes a plurality of surface processing apparatus including a surface processing apparatus for processing a surface of an object to be treated by introducing a treatment liquid to the surface, and a conveyer unit for conveying the object to be treated, which is disposed between the respective surface processing apparatus linearly or in a curved manner. Each of the surface processing apparatus includes a positioning unit for positioning the object to be treated, which has been conveyed by the conveyer unit to a predetermined position, at which the object is subjected to a pre-plating process or a plating process as a surface processing. | 11-12-2009 |
20090321253 | ELECTRODE MOUNTING STRUCTURE OF SURFACE TREATMENT APPARATUS - An electrode mounting structure of a surface treatment apparatus in which a metal electrode is disposed so as to oppose to an inner-peripheral surface of a cylinder, the electrode and the cylinder are energized in a state where treatment liquid is interposed between the electrode and the cylinder inner-peripheral surface so as to perform pre-plating or plating to the cylinder inner-peripheral surface, and the metal electrode is detachably attached to a metal electrode holder member. The structure includes a resin coupler having a threaded portion engaged with a threaded portion formed on the electrode holder member. | 12-31-2009 |
20100078326 | PLATING PRETREATMENT APPARATUS AND METHOD FOR CYLINDER BLOCK - The present invention provides an apparatus for plating pretreatment of a cylinder block that includes an electrode performing a plating pretreatment of the cylinder inner wall surface. A gap flow channel communicates with an in-electrode flow channel at a position closest to a seal jig, the gap flow channel being adapted to introduce a treatment liquid to the cylinder inner wall surface, the in-electrode flow channel being adapted to receive the treatment liquid having passed through a communicating hole. The present invention is provided a method for pretreating before plating a cylinder block including disposing an electrode to face the cylinder inner wall surface so as to form a gap flow channel, and introducing a treatment liquid to the gap flow channel thereby flowing through the treatment liquid toward a seal jig and then into an in-electrode flow channel through a communicating hole. | 04-01-2010 |
20100104738 | PLATING PRETREATMENT APPARATUS AND METHOD FOR MULTI-CYLINDER BLOCK - A plating pretreatment apparatus for a multi-cylinder block includes a plurality of cylinders that performs a plating pretreatment of a cylinder inner wall surface of each of the cylinders using an electrode disposed so as to oppose to the cylinder inner wall surface by sealing one end of the cylinder inner wall surface and introducing a treatment liquid to the cylinder inner wall surface. In such plating pretreatment apparatus, at least one of a power supply device that supplies electricity to the cylinder block and the electrode and a liquid feed pump that feeds the treatment liquid into a gap between the cylinder inner wall surface and the electrode is provided for each of the cylinders. | 04-29-2010 |
Hitoshi Muramatsu, Shizuoka-Ken JP
Patent application number | Description | Published |
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20110162961 | CYLINDER BLOCK PLATE PROCESSING APPARATUS AND SEALING MECHANISM OF THE SAME - A cylinder block plate processing apparatus in which one end side of an inner peripheral surface of a cylinder of a cylinder block is sealed to circulate a process liquid to perform pre-plating or plating processing of the cylinder inner peripheral surface. The apparatus includes: an apparatus body having a workpiece mount table on which the cylinder block is placed; a workpiece holding tool that is provided on the workpiece mount table so as to be vertically movable; an electrode support member including an electrode cylinder mounted to the apparatus body; a processing solution supply member that supplies a processing solution to the electrode support member; an electrode operated by the electrode cylinder; a sealing jig provided to one end of the electrode; a driving mechanism that drives the sealing jig; and a control circuit that controls operations of the processing solution supply member and the driving mechanism. The electrode and the sealing jig are inserted from the other end side of the cylinder inner peripheral surface into the cylinder, and the driving mechanism is inserted from an end side of the inner peripheral surface so as to be connectable to the sealing jig. | 07-07-2011 |
20120217167 | METHOD FOR PAINTING ARTICLE TO BE TREATED - An object of the present invention is to unify sealing treatment and degreasing treatment by treating an anodic oxide film of an article to be treated made from aluminum or an aluminum alloy with a strongly basic treatment liquid containing a lithium ion, and simplify a pretreatment step for painting. A method for painting the article to be treated, by forming the anodic oxide film on the article to be treated made from aluminum or the aluminum alloy, and painting the article to be treated by using the anodic oxide film as a substrate, includes a first step including anodic treatment S | 08-30-2012 |