Method and apparatus for closing a thin-walled container body
Patent 4362002 Issued on December 7, 1982. Estimated Expiration Date: 
July 1, 2000. 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.
July 1, 2000. 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 ReferencesInventorsAssigneeApplicationNo. 06/165141 filed on 07/01/1980US Classes:53/478, Separate closure53/297, Concentric with or at infeed of closure53/357, Resilient annulus53/373.9, Comprising means to force heated fluid to contact cover53/374.2, With nonplanar sealing surface53/487, With preliminary closure shaping53/488By conforming closure to containerExaminersPrimary: Culver, Horace M.Attorney, Agent or FirmInternational ClassB65B 7/16 (20060101)Foreign Application Priority Data1979-07-05 GBAbstractA thin-walled can body having a terminal curled rim at an open end thereof, has this open end closed and sealed by a diaphragm which is first formed into a dished shape by a forming tool which then cuts the dished diaphragm from a web and places it on the open end of the body. The upturned edge portion of the diaphragm is subsequently pressed into adhesion between a heat-sealable layer of the diaphragm and the curled rim, the latter being hot, by a presser tool comprising a mount carrying a spring-loaded pad. The pad is resiliently deformable and applies controlled pressure directly on the diaphragm, thus effecting complete conformity of the latter to any irregularities of the curled rim. | |
