Dispensing closure seals

Dispensing – Movable material discharge guide – Closure type

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Details

222536, B67D 300, B67D 532

Patent

active

042829917

ABSTRACT:
Effective, easily manufactured seals for dispensing closures in which a spout is rotatably mounted on a cap can be created using an edge on an external surface of the cap to engage an end of the spout. This edge serves to create a seal. The end of the spout and the external surface adjacent to the edge have related cross-sectional configurations such that in all positions of the spout the end engages the edge in the same manner so as to form a seal.

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Schwarz et al., Pictorial Handbook of Technical Devices, 1971, pp. 374 & 375.
Palestrant, Practical Pictorial Guide to Mechanisms and Machines, 1956, pp. 60-65.

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