Receptacles – Compartmented container – Compartment partition is stiff and fixed in position
Reexamination Certificate
1999-09-07
2001-01-30
Pollard, Steven (Department: 3727)
Receptacles
Compartmented container
Compartment partition is stiff and fixed in position
C215S006000
Reexamination Certificate
active
06179153
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a two-chamber container, and more particular to a container having a main body to which differently designed upper covers with the same basic structure can be selectively closed depending on actual usage.
There are various kinds of differently designed containers available in the markets. Among these containers, there is one formed from multiple parts that are injection-molded from clear plastic material. These injection-molded parts are then connected to one another by ultrasonic welding. A part of the container so formed is used to contain creamy liquid that can be sucked for use through a suction head and an associated suction pipe, and another part of the container is used to contain a dual-liquid and floating ornaments to create additional decorative effect. A disadvantage of this multi-part container is it includes so many parts that it necessitates many molds for forming these parts and therefore higher manufacturing cost for the container. Another disadvantage of the container is it is uneasy to have controlled quality in respect of the ultrasonic welding of the complicate parts and therefore the high bad yield of the produced containers. The high manufacturing cost and the high bad yield all reduce the competitive ability of these multi-part containers in the markets. Moreover, such multi-part container has a main body that has been designed for use only to contain creamy liquid. That is, the container has only one single usage as a creamy liquid container without the possibility of serving as other similar series products, such as a toothbrush support, a mouth washing cup, etc. The container therefore can not be produced in a more effective manner to reduce the cost thereof.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a two-chamber container that includes an integrally injection-molded main body having an upward opened inner chamber and a downward opened outer chamber surrounding or below the inner chamber. The inner chamber has a first annular flange vertically upward extending along an outer periphery of its opening. The upward opening of the main body may be selectively closed with an upper cover. The upper cover may be differently designed for the container to provide different usage depending on actual need. But the upper cover always includes a second annular flange vertically downward extending along an inner periphery thereof, such that the second annular flange is tightly fitted in the first annular flange when the upper cover is closed into the upward opening of inner chamber of the main body. A bottom plate is plastically welded to the downward opening of the outer chamber, so that a dual-liquid and floating ornaments may be contained in the outer chamber for display and decoration purpose.
REFERENCES:
patent: 2711766 (1955-06-01), Archer, et al.
patent: 3469739 (1969-09-01), Phillips
patent: 3590989 (1971-07-01), Wittwer
patent: 5388729 (1995-02-01), Gerringer
patent: 5487486 (1996-01-01), Meneo
patent: 5769680 (1998-06-01), Hoffman
patent: 5996781 (1999-12-01), Glaser et al.
Dougherty & Troxell
Pollard Steven
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