Vacuum bottle cap

Details Vacuum bottle cap Vacuum bottle cap

2005-12-13

2005-12-13

Maust, Timothy L. (Department: 3751)

Fluent material handling, with receiver or receiver coacting mea

Evacuation apparatus

C141S094000, C141S095000, C220S203060, C220S231000

Reexamination Certificate

active

06973945

ABSTRACT:
The present invention is a container lid assembly that includes an integral vacuum pump so as to create at least a partial vacuum within the container. There are several features of the present invention that can be used in synergy, but are of value when implemented separately. These features include a pump configuration that activates the reciprocating linear motion of the piston by the rotational movement of a pump actuating element; a contents-dispensing mechanism for removing contents from the container while maintaining the at least a partial vacuum within the container; a selectively activated lid-removal mechanism (child proof mechanism); a vacuum indicator; and a filter configured to filter the gases entering the pump from the interior of the container.

REFERENCES:
patent: 5944212 (1999-08-01), Chang
patent: 5961000 (1999-10-01), Sanfilippo et al.
patent: 6131753 (2000-10-01), Lynch

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