Foods and beverages: apparatus – Beverage – Infusors
Reexamination Certificate
2002-04-29
2003-11-18
Alexander, Reginald L. (Department: 1761)
Foods and beverages: apparatus
Beverage
Infusors
C099S279000, C099S293000
Reexamination Certificate
active
06647862
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to an upper lid of a coffee maker, particularly to one provided in the center portion with a safety valve unit able to be moved up by the steam produced by boiling water inside container of a coffee maker and force the warning member on its top to protrude out of the upper lid to warn a user not to open the upper lid directly to avoid scalded by accident.
A conventional coffee maker
10
, as shown in
FIG. 3
, includes a container
20
having a filling opening
201
in a top side and a pressure-releasing revolving button
30
at an outer side, as shown in
FIG. 2
, and an upper lid
40
rotatably mounted on the filling opening
201
. The upper lid
40
, as shown in
FIG. 1
, is formed inside with a receiving space
401
for receiving a rotatable receiving unit
50
, which is provided around its peripheral edge with a plurality of lugs
501
respectively having a screw hole. The rotatably receiving unit
50
has a recessed portion
502
at the bottom for a silica gel ring
503
to be fitted therein, and the recessed portion
502
is formed around its inner peripheral wall with a female-threaded portion
504
for rotatably engaging with a male-threaded portion
202
around the outer circumference of the filling opening
201
.
In addition, the rotatable receiving unit
50
is provided in the central top with a second recessed portion
505
for orderly receiving a silica gel pad
506
, a copper spring supporter
507
and a spring
508
. Then, a prop member
509
rests on and secured with the rotatable receiving unit
50
by bolts
60
, and afterward, the assembled rotatable receiving unit
50
is combined with the upper lid
40
by means of bolts
70
passing through the screw holes of the lugs
502
of the rotatable receiving unit
50
and then screwed with the corresponding portions of the upper lid
40
, as shown in FIG.
2
.
In using, the upper lid
40
is rotatably combined with the male-threaded portion
202
of the filling opening
201
after the container is filled in with a proper amount of water, as shown in FIG.
3
. Then, turn on power to carry on boiling. After the water in the container
20
is boiled and coffee is brewed, open the liquid outlet and pour out the brewed coffee, timely enabling the pressure inside to release out. Besides, the upper lid
40
has a warning slogan
90
glued on the surface in order to prevent a user from scalded in opening the upper lid
40
and adding water into the container
20
. However, scalding to a user's hand is still unavoidable in case the user abruptly opens the upper lid
40
inattentively.
SUMMARY OF THE INVENTION
The objective of this invention is to offer an upper lid of a coffee maker, which includes a rotatable receiving unit formed with a female-threaded portion around the inner wall and having a central through hole inserted upward by a support post fitted with a prop member. The portion of the support post extending to the receiving recess in the top of the rotatable receiving unit is fitted with a pressure-releasing valve unit. Then, the rotatable receiving unit and the upper lid are combined together, and the support post has its top end fitted with a warning member movably positioned in the central through hole of the upper lid. Thus, the steam produced by boiling water inside the container of a coffee maker enables the interior safety valve unit to move up and force its top warning member to protrude out of the through hole of the upper lid, manifestly reminding a user of the high-pressured steam inside the coffee maker and warning him/her not to open the upper lid directly to avoid scalded.
REFERENCES:
patent: 3282196 (1966-11-01), Manship et al.
Alexander Reginald L.
Kamrath Alan D.
Rider Bennett LLP.
Uni-Splendor Corp.
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