Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Reexamination Certificate
2000-02-18
2001-08-07
Pelham, Joseph (Department: 3742)
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
C126S194000, C016S261000
Reexamination Certificate
active
06271502
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an oven door connection structure, and more particularly to a quick-disconnect arrangement for an oven door to enable easy and quick disconnection of the oven door from the oven to facilitate cleaning of the door and the interior of the oven.
Most of the currently available electric ovens have a door that is pivotally connected to the oven to turn between an opened and a closed position but could not be freely disconnected from the oven. On the other hand, an inner surface of the door and the interior of the oven tend to be smeared with spattered grease from heated food after the electric oven has been used for a long time. The smeared door and interior of the oven would adversely affect the thermal efficiency of the electric oven and it is therefore necessary to disconnect the door from the oven to facilitate cleaning of the door and the interior of the oven.
Please refer to
FIG. 1
that is a partially exploded perspective of an electric oven
1
showing a conventional disconnection arrangement for a door
2
of the oven
1
, and
FIG. 2
that is a fragmentary sectional view of the conventional oven door disconnection arrangement of FIG.
1
. The door
2
of the electric oven
1
has an inner frame
21
screwed to a backside of the door
2
. The conventional oven door disconnection arrangement includes two insertion holes
11
symmetrically provided at two walls of the oven
1
between which the door
2
is mounted, a long bar
22
transversely extended across the inner frame
21
with two ends of the long bar
22
projecting from the inner frame
21
to engage into the two insertion holes
11
on the oven
1
, a pull handle
23
extended from a middle point of the long bar
22
toward the oven
1
and projected from the inner frame
21
, a spring
24
put around the long bar
22
to one side of the pull handle
23
, and a guide slot
25
provided on the inner frame
21
close to the pull handle
23
and extended in parallel with the long bar
22
, so that the pull handle
23
could be moved along the guide slot
25
toward the spring
24
. With the arrangement, the pull handle
23
could be moved along the guide slot
25
toward the spring
24
when the door
2
has been pivotally turned to the opened position, so that the long bar
22
is brought to move along with the pull handle
23
until an end of the long bar
22
opposite to the spring
24
disengages from the corresponding insertion hole
11
. At this point, the door
2
and the inner frame
21
may be disconnected and removed from the oven
1
. The above-described conventional oven door disconnection arrangement has complicate structure and is difficult to assemble and therefore increases the cost for manufacturing the electric oven
1
.
It is therefore tried by the inventor to develop a quick-disconnect arrangement for an oven door to eliminate the drawbacks existing in the conventional oven door disconnection arrangement.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a quick-disconnect arrangement for an oven door that involves simple structure and could be easily handled to quickly disconnect an oven door from the oven to facilitate cleaning of the door and an interior of the oven.
To achieve the above and other objects, the oven door quick-disconnect arrangement according to the present invention mainly includes two pivotal pins provided at two lateral sides of the oven door and two insertion holes correspondingly provided on two walls of the oven between which the oven door is mounted, such that the oven door is pivotally connected to and between the two walls of the oven through engagement of the pivotal pins with the insertion holes. At least one of the two insertion holes defines a vertically extended narrow long slot, so that the pivotal pin engaged therewith is movable therein. And, a maximum linear distance between the two insertion holes is slightly larger than a sum of an overall width of the oven door and a full length of one pivotal pin. Therefore, the oven door may be easily and quickly disconnected from the oven by turning the door open and lifting one side of the door adjacent to the narrow long slot to disengage the pivotal pin at that side from the narrow long slot and then disconnecting and removing the door from the electric oven.
The quick-disconnect arrangement for the oven door may also be applied to a top cover of the electric oven. In this case, the insertion hole in the form of a narrow long slot is a horizontally extended slot.
REFERENCES:
patent: 4099511 (1978-07-01), McIntire et al.
patent: 4258632 (1981-03-01), LaPointe
patent: 4754121 (1988-06-01), Fujino et al.
Pelham Joseph
Pro Techtor International Services
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