Home canning closure system

Details Home canning closure system Home canning closure system

B - Operations, Transporting

65

D

206/35

B65D 41/08 (2006.01) B65D 51/14 (2006.01)

Patent

CA 1117477

ABSTRACT OF THE DISCLOSURE An improved home canning closure system is pro- vided for a home canning jar featuring a plastic ring and a metal lid combination which is adapted to allow excess pressure to escape while preventing the escape of the contents from the container. The plastic ring includes an annular top panel portion and a skirt portion depending downwardly from the outer periphery of the top panel portion. The skirt portion incorpor- ates buttress threads on its inner surface to engage threads on the external neck of the home canning jar. The plastic ring features an upwardly and outwardly inclined ramp portion on its lower surface and a thin section at the junction of the top panel and skirt portions which combine to form a spring member to maintain a constant force to bias the metal lid into sealing engagement with the upper rim on the home canning jar.

294900

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