Title: Helical coil tube-form insert for flexible bags

Abstract: A helical coil winding inserted in a flexible bag, such as a plastic bag, and connected to or associated with the dispensing spout or neck opening thereof. The helical coil will extend into the bag and will provide a form, about which the flexible wall of the bag will collapse and form, to provide a dispensing tube or passageway leading to the bag spout, as the contents of the bag are removed as a result of a pumping action, suction action or other condition resulting in differential pressure causing collapse of the bag.

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Inventors: Bond, Curtis J. (Marion, OH, US)

Application Number: 828632
Filing Date: 1977-08-29
Publication_date: 1979-02-06
Assignee: Liqui-Box Corporation (Worthington, OH)
Primary Class(es): 222/105 222/464.3
Other Classes:
US Patent Ref:

1038181	Sep, 1912	Mossberg	222/211.
3043316	Jul, 1962	Bolser	222/564.
3090526	May, 1963	Hamilton et al.	220/441.
3138293	Jun, 1964	Roak et al.	222/105.
3549050	Dec, 1970	Bruce	222/464.
4062475	Dec, 1977	Harris et al.	222/95.

Other Refs:
Primary Examiner: Tollberg, Stanley H.
Assistant Examiner: Bartuska, Francis J.
Attorney: Miller; Wm. V.