公开(公告)号：US4122697A

公开(公告)日：1978-10-31

申请号：US709929

申请日：1976-07-29

Applicant: Susumu Hanyo ,  Jousuke Yamaguchi ,  Yoshiyuki Morishita ,  Itoshi Noguchi

Inventor： Susumu Hanyo ,  Jousuke Yamaguchi ,  Yoshiyuki Morishita ,  Itoshi Noguchi

IPC: B21D7/025 ,  B21D7/16 ,  B21D7/024

CPC classification number: B21D7/162 ,  B21D7/025 ,  Y10S72/702

Abstract: A means and method is provided for reducing radius expansion of bent, elongated materials due to "spring-back" occurring after the material is released from the bender clamps of a hot bending apparatus, wherein the longitudinal axis of the unbent portion of the material is displaced by a small angle from a perpendicular to a line running through the center of the bend and the bender heating means.

Abstract translation: 提供了一种方法和方法，用于减少在材料从热弯曲设备的弯曲夹具释放之后由于“弹回”而引起的弯曲细长材料的半径膨胀，其中材料的未弯曲部分的纵向轴线为 从垂直于弯曲中心的弯道和弯曲加热装置的一条垂直线偏移一小角度。

公开(公告)号：US4098106A

公开(公告)日：1978-07-04

申请号：US709950

申请日：1976-07-29

Applicant: Jousuke Yamaguchi

Inventor： Jousuke Yamaguchi

IPC: B21D7/025 ,  B21D7/03 ,  B21D7/16

CPC classification number: B21D7/025

Abstract: A pipe bending apparatus includes a pivotable bending arm carrying a means for engaging the pipe including an outer clamp attached to the arm and an inner clamp contacting the pipe and slidable within the outer clamp.

Abstract translation: 管道弯曲装置包括可枢转的弯曲臂，其承载用于接合管道的装置，该装置包括附接到臂的外部夹具和与管道接触并可在外部夹具内滑动的内部夹具。