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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Asada; Kikuo
Address:
Mishima, JP
No. of patents:
18
Patents:












Patent Number Title Of Patent Date Issued
8147623 Steel pipe as fuel injection pipe April 3, 2012
To provide a steel pipe as a fuel injection pipe with high material strength, high internal pressure limit free from fatigue failure, prolonged fatigue life, and high reliability. A steel pipe as a fuel injection pipe of 500 N/mm.sup.2 or higher tensile strength comprising, by mass,
7568736 Joint structure of branch connector for common rail August 4, 2009
A joint structure of a branch connector for a common rail capable of securing axial force applied to a seal surface and a branch connector and increasing bending fatigue strength of the branch connector is provided. In the joint structure of the branch connector for the common rail which
7431781 Method for forming a common-rail injection system for diesel engine October 7, 2008
A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and li
7125051 Common-rail injection system for diesel engine October 24, 2006
A common-rail injection system is provided for a diesel engine and has excellent internal pressure fatigue resisting characteristics, vibrational fatigue resisting characteristics and cavitation resisting property and sheet face flawing resisting property, and can be made thin and li
6918378 High-pressure fuel injection pipe July 19, 2005
In a high pressure fuel injection pipe, pipe extension and heat treatment are repeated by using a header manufactured by transformation induced plastic type strength steel. A process for depositing residual austenite is then performed, after which a final pipe extension process is pe
6805144 Protective cover for umbrellas and umbrella with the protective cover fixed thereto October 19, 2004
An expansible and retractable protective cover is provided for umbrellas. The cover is mountable to align with the shaft of the umbrella and can be expanded parallel to the shaft of the umbrella to cover the umbrella after the umbrella has been folded into a closed condition. Thus, the c
6562484 Steel material of high fatigue strength and a process for manufacturing the same May 13, 2003
A hot worked steel material, such as a bar, or tube, has a surface layer improving its fatigue strength despite the non-metallic inclusions which it may contain, or the cracks which it may have. The surface layer is formed by heating a nickel layer on the steel surface to cause the d
6494183 Common rail for diesel engine December 17, 2002
A common rail includes a main pipe rail having a circulating passage extending in its inside in the axial direction thereof, branch holes formed in an axial peripheral wall portion of the main pipe rail, and branch connectors connected to the respective branch holes integrally or via
6463909 Common rail October 15, 2002
A common rail has a main pipe rail with a peripheral wall. A boss is provided on the peripheral wall, and a branch hole extends through the boss and into the main pipe rail. The branch hole has a pressure receiving seat face. A branch pipe has a pressing seat face that is urged into the
6408826 Common rail and method of manufacturing the same June 25, 2002
There is provided a common rail which can effectively restrict a generation of a stress in a lower end inner peripheral edge portion of a branch hole and can improve an internal pressure fatigue strength in a branch pipe connecting portion, so that a secure and stable function can be obt
6397881 METHOD FOR IMPROVING FATIGUE STRENGTH DUE TO REPEATED PRESSURE AT BRANCH HOLE PART IN MEMBER FOR June 4, 2002
A member for a high pressure fluid or a member for a high pressure fluid with a built-in slider having higher quality which can be provided at a low price, and by which the generation of tensile stress in the lower end inner peripheral edge part of a branch hole can be canceled by compre
6317975 Method of manufacturing common rails November 20, 2001
A method is provided for manufacturing common rails, such as a high-pressure fluid manifold or a block rail that may be use in an accumulator fluid injection system. The method includes providing a main tubular rail with a flow passage extending in an axial direction. A bottomed lowe
6263862 Common rail and method of manufacturing the same July 24, 2001
There is provided a common rail which can effectively restrict a generation of a tensile stress in a lower end inner peripheral edge portion of a branch hole by canceling by means of a compression residual stress and can improve an internal pressure fatigue strength in a branch pipe conn
6213095 Common rail and method of manufacturing the same April 10, 2001
A common rail is provided for promoting inner pressure fatigue strength at location in proximity to a branch pipe. The common rail includes a main pipe rail with a main flow path. At least one boss in provided on the peripheral wall and includes a branch hole communicating the main flow
6126208 Common rail and method of manufacturing the same October 3, 2000
A common rail includes a generally cylindrical peripheral wall having a communication passage extending axially therethrough. At least one branch hole extends through the peripheral wall and is aligned perpendicular to the axis of the common rail. The intersection of the branch hole with
6050611 Common rail April 18, 2000
There is provided a common rail which can reduce a maximum stress value generated in an inner peripheral edge portion of a lower end of a branch hole and can further improve an internal pressure fatigue strength. In the common rail comprising at least one branch hole provided on a periph
5957507 Joint structure for branch connectors in common rails September 28, 1999
A joint structure for a branch connector in a common rail, comprising: a main pipe rail having a conduit therein on its axis and a plurality of through holes formed in its circumferential wall at an axial spacing, each of the through holes having a pressure receiving seat formed on the
4346739 Composite metal tubing August 31, 1982
A composite metal tubing is provided which includes an inner tubular member press fitted into the bore of an outer tubular member. The inner tubular member is made of a steel having a tensile strength of at least 48 kg/mm.sup.2. Additionally, the wall of the inner tubular member has a










 
 
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