Apparatus for forming seal liner in crown shell
Patent 4170445 Issued on October 9, 1979. Estimated Expiration Date: 
September 16, 1997. 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.
September 16, 1997. 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 1053898 2745135 2930081 2954585 3877497 Closure lining machine Patent #: 3963396 InventorAssigneeApplicationNo. 05/833766 filed on 09/16/1977US Classes:425/126.1, Means to convey preform to female mold425/127, Preform stock acting as reaction shaping surface cooperating with recessed fluent stock shaping means425/348R, Orbiting425/356, PLURAL SHAPING PLUNGERS OR ROLLS COACTING WITH A SINGLE FEMALE MOLD425/809SEAL (BOTTLE CAPS ONLY)ExaminersPrimary: Spicer, Robert L. Jr.Attorney, Agent or FirmInternational ClassesB21D 51/46 (20060101)B21D 51/38 (20060101) AbstractA machine for forming sealing liners of thermoplastic materials in crowns, which includes a crown carrier and a press drum. Crowns are disposed on the crown carrier and are directed to the press drum by a transfer plate that directs the crowns from the carrier to the drum. The molding of the plastic liner takes place only on the press drum.Field of SearchFemale mold or preform support vertically movablePreform stock acting as reaction shaping surface cooperating with recessed fluent stock shaping means Reciprocable mold, non-reciprocable plunger PLURAL SHAPING PLUNGERS OR ROLLS COACTING WITH A SINGLE FEMALE MOLD SEAL (BOTTLE CAPS ONLY) Orbiting | |
