Special receptacle or package – Tray type
Reexamination Certificate
2003-01-27
2004-11-09
Banks, Derris H. (Department: 3712)
Special receptacle or package
Tray type
C206S524300, C206S565000, C220S574000, C264S273000
Reexamination Certificate
active
06814235
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a serving tray, more particularly one, which has rubber sheets attached to an upper side thereof for preventing objects held on the upper side from slipping, and has rubber sheets attached to a bottom, and handles thereof for reducing slipperiness of the same respectively.
2. Brief Description of the Prior Art
Referring to
FIG. 9
, a conventional serving tray
4
has a sheet of rubber
42
attached to a holding portion
41
thereof by means of adhesive, which is cut into the shape of the holding portion
41
, after the tray
4
has been formed by means of injection molding. The main function of the rubber
42
is to prevent objects held on the holding portion
41
such as bottles, wine glasses, dishes etc from slipping when the serving tray
4
is being used.
However, such serving tray is found to have disadvantages as followings:
1. The adhesive is likely to lose the adhesion to both the rubber
4
and the holding portion
41
after the serving tray
4
has been used for a long period, and in turn, the rubber
42
will fall off or form undesirable raised portions to reduce stability of objects that are held on the tray
4
.
2. Material cost of the serving tray
4
is very high because rubber is relatively expensive as compared with plastic and because rubber attached to the tray
4
is relatively big, covering the whole holding portion
41
. Consequently, the serving tray
4
is not competitive.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a serving tray, which has slip-prevention rubber sheets attached to it in a relatively convenient and cost-saving way by means of an injection molding machine.
It is another object of the present invention to provide slip-prevention rubber sheets to a serving tray, which are so firmly attached to the serving tray as to not easily fall off.
The serving tray of the present invention has trenches and flow passages on upper and lower sides of a holding portion thereof, and recesses at handles thereof. After the handles and the holding portion are made with an injection machine and harden in the mold, slip-prevention rubber sheets are attached to the trenches and the recesses by means of injecting melted rubber into the mold via the through hole for the melted rubber to be applied over the trenches, and the recesses via the upper and the lower flow passages.
REFERENCES:
patent: 2777626 (1957-01-01), French
patent: 3637454 (1972-01-01), Pavernick
patent: 3937389 (1976-02-01), Wind
patent: 4183435 (1980-01-01), Thompson et al.
patent: 4737390 (1988-04-01), Fricano et al.
patent: 4744597 (1988-05-01), Bauman et al.
patent: D316210 (1991-04-01), Giugiaro
patent: 5137248 (1992-08-01), Sato et al.
patent: 5169023 (1992-12-01), Heiberg et al.
patent: 6330956 (2001-12-01), Willinger
patent: D472767 (2003-04-01), Gebhardt et al.
Banks Derris H.
Hwan Yih Enterprise Co., Ltd.
Rosenberg , Klein & Lee
Suhol Dmitry
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