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11. 再颁专利

USRE30940E Flaring tool 失效
公开(公告)号：USRE30940E
公开(公告)日：1982-05-25
申请号：US112523
申请日：1980-01-16
申请人： Leonard J. Kowal , Edward N. Garvey
发明人： Leonard J. Kowal , Edward N. Garvey
IPC分类号： B21D19/16 , B21D41/00
CPC分类号： B21D19/16 , B21D41/00
摘要： A manually operable tube flaring tool for providing a partial flare in the end of a deformable tube. The tool includes a flaring head defining an annular flaring surface and a cylindrical pilot portion projecting axially from the flaring surface to be received in the tube end for guiding the flaring surface axially against the distal end of the tube during the flaring operation. The tool further includes a support for fixedly positioning the tube end coaxially adjacent the flaring surface of the flaring head. The support defines an improved recess configuration providing a controlled buckling of the tube end by the forceful engagement therewith of the flaring surface wherein the buckled tube end defines preselected frustoconical inner and outer portions. The support may further define a conventional single flare recess opposite the partial flare recess whereby the tube may be used selectively to provide either of the partial or single flare flaring operations. The tube clamp may be defined by one leg of the U-shaped body and a cooperating clamp block movably carried by the body and adjustably positioned by a threaded member threaded through the other leg of the body.

12. 发明授权

US4403496A Tube bender construction 失效
标题翻译：弯管机施工
公开(公告)号：US4403496A
公开(公告)日：1983-09-13
申请号：US229861
申请日：1981-01-30
申请人： Leonard J. Kowal
发明人： Leonard J. Kowal
IPC分类号： B21D7/025 , B21D7/06 , B21D11/04
CPC分类号： B21D7/063
摘要： A tube bender construction for manual operation in bending a tube. The tube bender includes a mandrel defining a bending groove into which the tube is urged by a forming member mounted to the mandrel to swing about a bending axis of the bending groove. The tube to be bent is held against longitudinal movement during the bending operation by tube-holding structure arranged to clamp the tube against an extended groove portion of the mandrel. Movement of the forming member about the bending axis is effected by manipulation of a pair of handles which are arranged in offset manner to permit crossover of the handles and avoid interference between the user's hands thereon in the tube bending operation. The mandrel further defines an extension adapted for mounting thereof in a vise or the like. The handle connected to the mandrel is removably connected thereto as for removal when the mandrel is vise-mounted. The tube clamping structure includes a hook which is swingably mounted to the mandrel, and in the illustrated embodiment, is mounted between the mandrel and the mounting portion for mounting the mandrel handle and defining the vise-mounting structure.
摘要翻译：用于弯曲管的手动操作的弯管机结构。弯管机包括限定弯曲槽的心轴，通过安装到心轴上的成形构件将管推压到该心轴中以围绕弯曲槽的弯曲轴线摆动。待弯曲的管被弯曲操作期间通过管保持结构保持抵抗纵向运动，所述管保持结构被布置成将管夹紧在心轴的延伸槽部分上。成形构件围绕弯曲轴线的移动通过操作一对手柄来实现，所述手柄以偏移的方式布置以允许手柄的交叉，并且避免在管弯曲操作中用户的手之间的干涉。心轴还限定适于将其安装在台钳等中的延伸部。连接到心轴的手柄可拆卸地连接到其上，以便当心轴被安装时移除。管夹持结构包括可摆动地安装到心轴上的钩，并且在所示实施例中，安装在心轴和安装部分之间用于安装心轴手柄并限定虎钳安装结构。

13. 发明授权

US4379399A Tube bender construction 失效
标题翻译：弯管机施工
公开(公告)号：US4379399A
公开(公告)日：1983-04-12
申请号：US229863
申请日：1981-01-30
申请人： Leonard J. Kowal
发明人： Leonard J. Kowal
IPC分类号： B21D7/06 , B21D9/05
CPC分类号： B21D7/063
摘要： A tube bender construction for manual operation in bending a tube. The tube bender includes a mandrel defining a bending groove into which the tube is urged by a forming member mounted to the mandrel to swing about a bending axis of the bending groove. The tube to be bent is held against longitudinal and rotational movement during the bending operation by tube holding structure arranged to clamp the tube against an extended groove portion of the mandrel. Movement of the forming member about the bending axis is effected by manipulation of a pair of handles. The tube clamping structure includes a hook which is swingably mounted to the mandrel and adjusting structure is provided for adjusting the disposition of the swingable hook to provide a desired clamping force of the hook against the tube. The illustrated adjusting structure includes an eccentric pin and structure for locking the pin in adjusted positions.
摘要翻译：用于弯曲管的手动操作的弯管机结构。弯管机包括限定弯曲槽的心轴，通过安装到心轴上的成形构件将管推压到该心轴中以围绕弯曲槽的弯曲轴线摆动。待弯曲的管被弯曲操作期间的纵向和旋转运动通过管保持结构被设置成将管夹紧在心轴的延伸槽部分上。成形构件围绕弯曲轴的移动通过操纵一对把手来实现。管夹持结构包括可摆动地安装到心轴上的钩，并且提供调节结构用于调节摆动钩的布置以提供钩相对于管的期望的夹紧力。所示的调节结构包括用于将销锁定在调节位置的偏心销和结构。

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