发明授权
- 专利标题： Method of forming cartridge chambers in firearm barrels
- 专利标题（中）： 在枪械弹药筒形成方法
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申请号： US112558申请日： 1980-01-16
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公开(公告)号： US4359810A公开(公告)日： 1982-11-23
- 发明人: William E. Osborne , Arthur H. Burns, Jr. , James M. O'Keefe
- 申请人： William E. Osborne , Arthur H. Burns, Jr. , James M. O'Keefe
- 申请人地址： CT North Haven
- 专利权人： The Marlin Firearms Company
- 当前专利权人： The Marlin Firearms Company
- 当前专利权人地址： CT North Haven
- 主分类号： B21J5/12
- IPC分类号： B21J5/12 ; B21J13/08
摘要：
Method of forming a cartridge chamber in the bore of a firearm barrel, which comprises driving into the bore of the barrel from the butt end thereof a mandrel of the surface configuration of the peripheral wall and mouth of the cartridge chamber, whereby the bore metal is squeezed into close form-fit with the mandrel, and then retracting the mandrel from the barrel bore.
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