Closure with compensating threads

Details Closure with compensating threads Closure with compensating threads

1979-02-02

1980-02-26

Hart, Ro E.

Bottles and jars

Closures

Cap type

220288, 215318, B65D 4104

Patent

active

041901711

ABSTRACT:
A container closure is provided with internal threads which compensate for variations in the external threads of a container neck onto which the container closure is to be threaded. The container closure threads extend inwardly toward the central axis of the closure and, in the illustrative embodiment, define an angle of 30 degrees with respect to the central axis. The closure thread tapers inwardly as it extends toward the central axis and is generally flexible but is sufficiently rigid to prevent the lower thread from contacting an immediately higher thread during flexing of the threads.

REFERENCES:
patent: 197466 (1877-11-01), Harvey
patent: 704482 (1902-07-01), Livingstone
patent: 2075411 (1937-03-01), Von Mertens
patent: 3189072 (1965-06-01), Starr
patent: 3263850 (1966-08-01), Scott
patent: 3487442 (1969-12-01), Rossmann
patent: 3589550 (1971-06-01), Rossmann
patent: 3640416 (1972-02-01), Temple
patent: 4014452 (1977-03-01), Galer

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