Dispensing – Outlet element operated by pressure of contents – Spring form – resilient or compressible flow controller or...
Patent
1976-06-21
1978-01-24
Reeves, Robert B.
Dispensing
Outlet element operated by pressure of contents
Spring form, resilient or compressible flow controller or...
B65D 3540
Patent
active
040699510
ABSTRACT:
A closure assembly is provided which is mounted on the end of a collapsible tube or pouch dispenser through which liquid, or soft solid substances such as toothpaste, shaving cream, catsup, mustard, shampoo, glue or the like, may be dispensed. The closure assembly allows the particular substance to be dispensed only when the tube is squeezed, and it automatically closes to prevent further flow of the substance when the squeezing pressure is removed. The closure member includes a flexible sleeve which is closed at one end and which is inserted into the neck of the dispenser. The sleeve normally expands against the inner peripheral surface of the neck to close and seal the opening to the tube or pouch. However, when a squeezing pressure is applied to the collapsible tube or pouch, the substance in the tube or pouch is forced out through the space between the inner peripheral surface of the neck and the outer peripheral surface of the resilient sleeve, to be dispensed so long as squeezing pressure is applied. However, the moment the squeezing pressure is removed, the resilient sleeve expands outwardly to close and seal the space between its outer peripheral surface and the inner surface of the mouth to prevent further flow of the substance therethrough.
REFERENCES:
patent: 1922652 (1933-08-01), Andersen
patent: 2605026 (1952-07-01), Wagner
patent: 3831629 (1974-08-01), Mackal
patent: 3913809 (1975-10-01), Nilson
Beecher Keith D.
Reeves Robert B.
Stack, Jr. Norman L.
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