Method of making a cartridge
Patent 4162645 Issued on July 31, 1979. Estimated Expiration Date: 
November 19, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 19, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 34615 2099252 2232634 3062144 3087428 3113483 3115835 3446146 3645207 InventorAssigneeApplicationNo. 05/743390 filed on 11/19/1976US Classes:86/23, AMMUNITION LOADING86/31, Filling86/39CrimpingExaminersPrimary: Tudor, Harold J.Attorney, Agent or FirmInternational ClassesF42B 7/12 (20060101)F42B 8/04 (20060101) F42B 7/00 (20060101) F42B 8/00 (20060101) AbstractA method of making a cartridge, in particular a blank or propellant gas cartridge which has a casing of generally tubular form with a telescopically reverse in-folded star-crimp-closed integral tubular end section, and within which is contained a blank propellant powder charge, with a readily rupturable wad of low heat conductivity initial restraining mass formed between the propellant powder charge and the in-folded telescoping star-crimp-closed end of the casing, in which method the cartridge is formed by front loading a propellant charge and the low-heat-conductivity wad, and then star-crimping and telescopically reverse in-rolling the cartridge casing, after which the recessed in-rolled star-crimped casing is heat sealed. | |
