[특허]Cross member for vehicle bumper bar and method for making same

[미국특허] Cross member for vehicle bumper bar and method for making same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60R-019/02
출원번호	US-0894826 (2004-07-20)
발명자 / 주소	Graber, Donald G.
출원인 / 주소	Trim Trends Co., LLC
대리인 / 주소	Dykema Gossett PLLC
인용정보	피인용 횟수 : 15 인용 특허 : 17

초록 ▼

A two step system or stage is provided to manufacturer a bumper of “B” shape cross section including a roll forming-welding stage where a straight cross member of a length to mount on the front or rear of various models of automobiles and the bending stage where any curvature or sweep is introduced into the cross member as required by the design of the automobile. The roll forming welding stage include the spot or tack welding of the front wall to the web followed immediately by welding together without any gaps therebetween the abutting longitudinal edges utilizing a high frequency welder. Thus, the “B” shaped cross section of the bumper may be used to make different bumpers of various lengths and curvatures.

대표청구항 ▼

1. An elongated bumper bar for a motor vehicle comprising:a single sheet of high tensile strength steel having a pair of longitudinal edges and roll-formed to cause the longitudinal edges to abut one another to provide an integral tubular structure of B-shaped cross section capable of absorbing energy during an impact with an object;said tubular structure having first and second, side-by-side, box-like tubular sections connected together by a web, with each tubular section having a front impact wall, an outer side wall, a rear wall and an inner side wall;each inner side wall being parallel to and spaced from the other inner side wall and integrally connected to said web;each inner side wall extending away from said web in the same direction;each of said rear walls being located in a plane parallel to said web being integrally connected to the inner side wall of its tubular section and adapted for connection to the motor vehicle;each of said rear walls being integrally connected to the outer side wall of its tubular section;the outer side wall of one of the tubular sections being parallel to and substantially wider than the outer side wall of the other tubular section of the bumper bar;the outer side wall of said other tubular section having the longitudinal edges of the sheet abutting each other and welded together by high frequency welding throughout their longitudinal extent without any gaps between said edges;the front impact wall of said one tubular section being integrally connected to the outer side wall and having a portion thereof overlying and abutting said web;the front impact wall of said other tubular section being integrally connected to the outer side wall and having a portion thereof overlying and abutting said web, with the remaining front wall portion inclined on an angle and extending towards and being connected to said outer side wall of said other tubular section; andsaid front wall portions of said tubular sections which overlie and abut said web being tack welded to said web at longitudinally spaced areas to prevent separation of said front impact walls from said web.2. The elongated bumper bar of claim 1, said one tubular section is the upper section of the bumper bar and said other tubular section is the lower section of the bumper bar, said lower section having its outer side wall with the welded abutting longitudinal edges facing downwardly and generally hidden from view when mounted on the motor vehicle.

이 특허에 인용된 특허 (17) 인용/피인용 타임라인 분석

Sturrus Peter, Apparatus for forming an end bumper for vehicles.
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Sturrus Peter (Grand Haven MI), Apparatus for forming an end bumper for vehicles.
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Sturrus Peter (Grand Haven MI) Heinz Richard (Grand Haven MI), Apparatus for roll-forming an automotive bumper.
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Sturrus Peter (Grand Haven MI), Apparatus for roll-forming end bumper for vehicles.
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Kazuo Mori JP; Tsuyoshi Kamiya JP; Shinichi Haneda JP; Terutsugu Gotanda JP; Kazunari Azuchi JP; Kiyoichi Kita JP; Kazunobu Nuno JP, Bumper apparatus for vehicle.
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Walter Himsl ; Jeffrey J. Mellis, Bumper beam assembly and method.
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Azuchi, Kazunari; Nuno, Kazunobu, Bumper reinforcement structure.
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Dhafer Mansoor ; Gregory Stanley Frederick ; Shui-Fang Chou ; Jeffrey A. Anderson, Bumper system for motor vehicles.
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Donald Paul Werner ; Gregory Stanley Frederick ; Jeffrey Leonard Bladow ; Shui-Fang (Ray) Chou, Bumper system for motor vehicles.
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Anderson, Jeffrey A.; LaPeer, Sherry; Pelto, Chris, Floating bumper beam system.
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Stewart Robert L. ; Gasko David J. ; Martin Paul A. ; Jalbert Dennis W., Force-absorbing vehicle bumper.
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Sturrus Peter (Grand Haven MI) Heinz Richard (Grand Haven MI), Method of roll-forming an automotive bumper.
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Sturrus Peter (Grand Haven MI), Method of roll-forming an end automotive bumper.
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Artner Bernd,DEX ; Krueger-Eppstein Albrecht,DEX, Structural member.
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Sturrus Peter (Grand Haven MI) Heinz Richard (Grand Haven MI), Tubular roll-formed automotive bumper.
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Reiffer Raymond C., Vehicle bumper including end section and method of manufacture.
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Stewart Robert L. (Rochester Hills MI) Osterman Alan J. (Bloomfield Hills MI) Jalbert Dennis W. (Mt. Clemens MI), Vehicle bumper structure.
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이 특허를 인용한 특허 (15) 인용/피인용 타임라인 분석

Agrahari,Shailesh K., B-shaped beam with radiused face but recessed center.
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Handing, Christian; Roll, Michael; Possberg, Stephan, Bumper crossbeam as component of a bumper of a motor vehicle.
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Braunbeck, Bardo; Hock, Theobald, Energy absorbing element and motor vehicle body using the same.
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Guiles,Melvin J., Low-profile high-strength vehicle door beam.
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Mellis, Jeffery Jay, Method for forming a bumper beam for a motor vehicle.
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Johnson, Thomas; Witte, Doug; Gatti, Daniel; Oxley, Brian; Malkowski, Brian, Method for forming tubular beam with center leg.
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Miller, Richard H.; Jones, Ronald E., Single item workflow manufacturing system and method.
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Yoshida, Michitaka; Kojima, Nobusato; Tomizawa, Atsushi; Shimada, Naoaki, Strength member for an automobile body, front side member, and side structure for an automobile body.
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Yoshida, Michitaka; Kojima, Nobusato; Tomizawa, Atsushi; Shimada, Naoaki, Strength member for an automobile body, front side member, and side structure for an automobile body.
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Yoshida, Michitaka; Kojima, Nobusato; Tomizawa, Atsushi; Shimada, Naoaki, Strength member for an automobile body, front side member, and side structure for an automobile body.
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Johnson, Thomas; Witte, Doug; Gatti, Daniel; Oxley, Brian; Malkowski, Brian; Ramamoorthy, Kannan; Pendergrass, Ed, Tubular beam with center leg and method for forming the same.
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Henseleit, Karl, Vehicle bumper and method of making same.
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Nagai, Shigeyuki; Koga, Shigekazu; Honda, Keiichi; Fukagawa, Kazuyuki; Nakazato, Daisaku; Sato, Sakae, Vehicle bumper structure.
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Gallagher, Jr., Hugh M.; Loosle, Joseph Bryan; Williams, Jack L.; Wood, William W.; Daniels, Brenda D.; Anthony, Cory J.; Smith, David R., Welded hot-rolled high-strength steel structural members and methods.
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Gallagher, Jr., Hugh M.; Loosle, Joseph Bryan; Williams, Jack L.; Wood, William W.; Daniels, Brenda D.; Anthony, Cory J.; Smith, David R., Welded hot-rolled high-strength steel structural members and methods.
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[미국특허] Cross member for vehicle bumper bar and method for making same 원문보기