Door lock mechanism of microwave oven
AssigneeSharp Kabushiki Kaisha
InventorMichio Ohkado
Life of this patent
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Abstract
A door lock mechanism having a relationship with the presence and absence of power supply to a source of heat, comprises a door switch, a door circuit activated in association with the opening and closing of the oven door, a cook circuit, first means for controlling the activation of the cook circuit, and second means responsive to the door switch for controlling the opening and closing of the oven door to thereby control the activation of the door circuit, wherein the second means is prevented by the first means from controlling the opening of the oven door while the first means is activated to provide the activation of the cook circuit.
Claims7
A lock mechanism for an oven generation circuit comprising:
- a door switch being controlled by the opening and closing of an oven door;
- a cook switch which may be activated when said oven dor is in the closed position;
- a generation circuit operatively connected to a power source, a heat generating source, said door switch and said cook switch;
- said heat generating source being power supplied by the activation of both the door switch and the cook switch;
- first means for controlling the activation of the cook switch;
- and
- second means responsive of a door opening mechanism for controlling the opening and closing of the oven door, thereby controlling the activation of the door switch;
- wherein the second means is prevented by the first means from controlling the opening of the oven door while the first means is activated to provide the activation of the heat generating source.
A lock mechanism for a microwave oven generation circuit comprising:
- a door switch being controlled by the opening and closing of an oven door;
- a cook switch which may be activated when said oven door is in the closed position for activating a microwave energy source;
- a lockable switching means controlling the switch-on condition of the cook switch;
- a locking means for controlling the closing and opening of the oven door and the door switches;
- a generation circuit operatively connected to a power source, said microwave energy source, said door switch and said cook switch;
- said heat microwave source being power supplied by the activation of both the door switch and the cook switch;
- said lockable switching means for said cook switch prevents the release of said locking means for said oven door and said door switch as long as the cook switch is closed and the microwave energy source may still be activated.
Dependencies are inferred from the claim text.