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"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Method and apparatus for forming a can end having an improved anti-peaking bead

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B21D-051/44   
미국특허분류(USC) 723/794 ; 723/48
출원번호 US-0137436 (1998-08-20)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Woodcock Washburn Kurtz Mackiewicz & Norris LLP
인용정보 피인용 횟수 : 73  인용 특허 : 54
초록

An apparatus and method for forming a narrow, tightly radiused annular anti-peaking bead in a can end in a multi-station conversion press. In a first forming station, a metal blank is first drawn into a cup shaped blank having a side panel and then reformed by reversing the action of the drawing tooling so as to fold the side panel into an initial, relatively broad annular bead. The initially beaded can end is then transferred to a second forming station where its periphery is pre-curled and the annular bead is reworked so as to reduce its width and radi...

대표
청구항

[ What is claimed:] [1.] A method of forming a can end, comprising the steps of:a) forming a metal blank having a periphery and a center panel;b) forming an annular bead in said metal blank, said annular bead defined by radially displaced and circumferentially extending inner and outer walls joined by an arcuate section, said inner and outer walls defining a width of said bead therebetween, said annular bead having an exterior surface and an interior surface, said exterior and interior surfaces defining therebetween a thickness of said metal forming said...

이 특허에 인용된 특허 (54)

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이 특허를 인용한 특허 피인용횟수: 73

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  10. Turner,Timothy; Gopalaswamy,Rajesh; Forrest,Randall G.. Can end. USP2007027174762.
  11. Turner,Timothy; Gopalaswamy,Rajesh; Forrest,Randall G.. Can end. USP2008047350392.
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