Electric heating – Microwave heating – Field modification
Patent
1995-10-26
1997-07-01
Leung, Philip H.
Electric heating
Microwave heating
Field modification
219762, 219753, 126338, 99421H, H05B 678, F24C 1516
Patent
active
056434863
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a domestic oven having a casing with a vertical front face and enclosing a heating cavity open at its front face and designed to be closed off by a door mounted so as to pivot about a horizontal shaft situated in the casing, the said cavity being equipped with a plate which supports food to be heated.
More particularly, it concerns a domestic oven whose food-carrying plate is able to move in horizontal translation under the action of at least one movement transmission mechanism controlled by the door, disposed in the casing and able, on the one hand, to transform the pivoting movement of the door into a translational movement of the food-carrying plate and, on the other hand, to effect a movement of the food-carrying plate such that the latter comes to occupy either an engaged position in which it is entirely contained within the cavity when the door is closed, or a disengaged position in which it projects transversely from the cavity when the door is open.
BACKGROUND OF THE INVENTION
This type of domestic oven is particularly advantageous since as it enables the food to be positioned or withdrawn while avoiding any risk of burning for the user. However, in such an oven, the transmission mechanism suitable for effecting the horizontal movement of the food-carrying plate in response to the pivoting of the door generally consists of a complex set of linkages articulated on one another, which makes the transmission mechanism a complicated one.
The invention aims notably to overcome this drawback by producing an oven such that the movement transmission mechanism between the door and the food-carrying plate is of a simple, economical and reliable design.
SUMMARY OF THE INVENTION
According to the invention, the transmission mechanism includes several successive transmission stages associated with one another and each consisting of a notched belt mounted so as to mesh on two rotating toothed wheels, of the driving and driven type respectively, which are keyed respectively on two horizontal shafts, parallel to one another, the shaft of the driving toothed wheel of the first stage consisting of the pivot shaft of the door and the shaft of the driven toothed wheel of the last stage having one end which projects transversely into the cavity and which carries a rotating toothed wheel referred to as the drive wheel meshing with teeth formed on a lower edge of the food-carrying plate and extending over the entire length of the latter.
The transmission stages are preferably two in number, the driving toothed wheel of the second stage being keyed on the same shaft as the driven toothed wheel of the first stage.
BRIEF DESCRIPTION OF THE DRAWINGS
Other characteristics and advantages of the invention will, furthermore, emerge from the description that follows, as a non-limitative example, with reference to the accompanying drawings in which:
FIG. 1 is a schematic view in partial elevation of the oven according to the invention, the door being in the closed position (with the food-carrying plate in the cavity);
FIG. 2 is a partial view in exploded perspective of one of the two transmission mechanisms coupling the door to the food-carrying plate; and
FIGS. 3 and 4 are partial schematic views of the side of the oven showing, on the one hand, the door in the closed position and the food-carrying plate in the cavity (FIG. 3) and, on the other hand, the door in the open position and the food-carrying plate projecting from the cavity (FIG. 4).
DETAILED DESCRIPTION OF THE INVENTION
The description of the invention which follows is given with reference to a microwave oven used in particular, but not exclusively, for the thawing and reheating of a frozen food product, it being understood that the invention applies equally to any type of electric oven, whether independent or integrated into a cooking appliance such as a cooker.
The microwave oven depicted in FIG. 1 has a casing 1, for example in the shape of an upright parallelepiped, having a vertical front face 2, o
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Aurensan Jean-Claude
De Matteis Michel Guy
Leparfait Eric
Leung Philip H.
Moulinex (S.A.)
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