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71. 发明授权

US3740993A Process for producing hollow forging with frusto conical exterior andinterior surfaces 失效
标题翻译：用FRUSTO CONICAL EXTERIOR安装表面生产中空锻造的工艺
公开(公告)号：US3740993A
公开(公告)日：1973-06-26
申请号：US3740993D
申请日：1971-11-12
申请人： MOORE C
发明人： MOORE C
IPC分类号： B21K21/10
CPC分类号： B21K21/10
摘要： A hollow open-ended frusto-conical forging having substantially uniform wall-thickness from end-to-end, for use as a reducer in pipe lines and the like, is made by first obtaining a hollow work-piece having a frusto-conical exterior surface and substantially cylindrical interior surface. This work-piece is heated to forging temperature and placed around a horizontally disposed cylindrical mandrel which is supported on the bed of a power press and the platen of the power press is pressed against the major portion of the work-piece which is internally supported by the mandrel to obtain a tapering reduction in the major portion of the work-piece thereat. The platen is then raised and the work-piece is partially rotated to position an immediately adjacent segment of the work-piece between the platen and mandrel. These steps are continued, with the intermediate raising of the platen and partial rotation of the work-piece until the inside and outside diameters of the work-piece are of acceptable dimensions throughout a 360* arc. The power press is then adjusted to increase the lowermost position of the platen with respect to the mandrel, and the steps described are repeated throughout a 360* arc as before. This is continued until the final hollow product with frusto-conical exterior and interior surfaces of the desired dimensions has been obtained.

72. 发明授权

US2039967A Method of manufacturing pipe caps 失效
标题翻译：制造管帽的方法
公开(公告)号：US2039967A
公开(公告)日：1936-05-05
申请号：US1324735
申请日：1935-03-27
申请人： LOWE THOMAS W
发明人： LOWE THOMAS W
IPC分类号： B21K21/10
CPC分类号： B21K21/10 , Y10T29/4944

73. 发明授权

US1898574A Method for forging insulator caps 失效
标题翻译：绝缘子盖锻造方法
公开(公告)号：US1898574A
公开(公告)日：1933-02-21
申请号：US45158130
申请日：1930-05-12
申请人： BREWER TITCHENER CORP
发明人： CARD CHARLES S
IPC分类号： B21K21/10
CPC分类号： B21K21/10 , Y10T29/49227

74. 发明授权

US1709328A Die for forging insulator caps 失效
标题翻译：用于锻造绝缘子盖
公开(公告)号：US1709328A
公开(公告)日：1929-04-16
申请号：US64944923
申请日：1923-07-05
申请人： STOVER CLINTON W
发明人： STOVER CLINTON W
IPC分类号： B21K21/10
CPC分类号： B21K21/10

75. 发明授权

US1491965A Method of forging insulator caps 失效
标题翻译：绝缘子盖锻造方法
公开(公告)号：US1491965A
公开(公告)日：1924-04-29
申请号：US63718723
申请日：1923-05-07
申请人： AMERICAN FORGE AND MACHINE COM
发明人： BARNEY NELSON
IPC分类号： B21K21/10
CPC分类号： B21K21/10 , Y10T29/49227 , Y10T403/32573

76. 发明授权

US4945749A Cold forming dies and cold forming process 失效
标题翻译：冷成型模具和冷成型工艺
公开(公告)号：US4945749A
公开(公告)日：1990-08-07
申请号：US429929
申请日：1989-10-30
申请人： Billy R. Walker , George B. Emmons , Robert E. Dean
发明人： Billy R. Walker , George B. Emmons , Robert E. Dean
IPC分类号： B21C23/03 , B21K21/10 , H01M2/30
CPC分类号： B21K21/10 , B21C23/03 , H01M2/307
摘要： Progressive step and compound dies are employed in a cold working process to form a metallic preform of selected mass into a precision-finished, pore-free, annular bushing with a mass substantially equal to that of the preform for use as a battery terminal which allows the fracture free spin over connection of the stem of the bushing to a battery cover and the close fit of the bushing on the battery post when the cover is fitted to the battery casing.

77. 发明授权

US4776197A Process and apparatus for producing an electrical battery pole or terminal 失效
标题翻译：用于生产电池电极杆或端子的工艺和设备
公开(公告)号：US4776197A
公开(公告)日：1988-10-11
申请号：US56383
申请日：1987-06-01
申请人： Giorgio Scott
发明人： Giorgio Scott
IPC分类号： B21K21/00 , B21K21/10 , H01M2/30 , H01M10/06 , B21D22/00
CPC分类号： H01M2/307 , B21J13/025 , B21K21/10
摘要： An electrical battery pole or terminal (50) is cold-produced by means of a process comprising axial compression at room temperature of an essentially cylindrical metal element (42) between a first and a second portion of die (1) and (2), travelling one opposite to the other, of which the first (1) forms that part which will be the protruding part (13) of the battery pole or terminal and the second (2) portion of die, by subjecting the lower part of the metal block to compression, forms the electrical battery pole's lower part, which is provided with shaped portions (35) forming a number of ribs.

78. 发明授权

US1712900A Method of making forged insulator caps 失效
标题翻译：锻造绝缘子盖的方法
公开(公告)号：US1712900A
公开(公告)日：1929-05-14
申请号：US3353825
申请日：1925-05-28
申请人： LOCKE INSULATOR CORP
发明人： OSBORNE DAVID H
IPC分类号： B21K21/10
CPC分类号： B21K21/10 , Y10T29/49227 , Y10T403/7015 , Y10T403/7037

79. 发明授权

US1707489A Insxtlatob cap 失效
公开(公告)号：US1707489A
公开(公告)日：1929-04-02
申请号：US1707489D
IPC分类号： B21K21/10
CPC分类号： B21K21/10 , Y10T29/49227

80. 发明授权

US1636586A Method of making insulator caps 失效
标题翻译：制造绝缘子帽的方法
公开(公告)号：US1636586A
公开(公告)日：1927-07-19
申请号：US15223226
申请日：1926-12-02
申请人： AMERICAN FORGE & MACHINE COMPA
发明人： BARNES HERMAN L
IPC分类号： B21K21/10
CPC分类号： B21K21/10 , Y10T29/49227

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