Door-open alarm device for a refrigerating appliance
First Claim
1. A door-open alarm device for a household appliance provided with a door and a stationary part on which the door is movably mounted, said device comprising:
- arranged on the stationary part of the appliance, alarm means connected to an electric circuit comprising a voltage source, a switch having first and second positions which correspond to the electric circuit being interrupted and closed respectively, electrical means providing a time delay in response to a current flow in the electric circuit and after a time delay producing a voltage variation across said alarm means, thereby triggering said alarm means and, arranged on the door, a mechanical actuating element for operating said switch, said actuating element opening said switch when the door is wide open or closed, and closing said switch when the door is ajar.
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0 Petitions
Accused Products
Abstract
A door-open alarm device comprises alarm means connected to an electric circuit which comprises, arranged on the stationary part (11), a voltage source, a switch (13) having two positions in which the circuit is interrupted and closed respectively, electrical time delay means responsive to a current flow in the circuit to produce a voltage variation across said alarm means after a time delay, thereby triggering said alarm means. Arranged on the door (12) is a mechanical actuating element (14) for said switch, which opens said switch when the door is wide open or closed, and which closes said switch when the door is ajar.
31 Citations
16 Claims
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1. A door-open alarm device for a household appliance provided with a door and a stationary part on which the door is movably mounted, said device comprising:
- arranged on the stationary part of the appliance, alarm means connected to an electric circuit comprising a voltage source, a switch having first and second positions which correspond to the electric circuit being interrupted and closed respectively, electrical means providing a time delay in response to a current flow in the electric circuit and after a time delay producing a voltage variation across said alarm means, thereby triggering said alarm means and, arranged on the door, a mechanical actuating element for operating said switch, said actuating element opening said switch when the door is wide open or closed, and closing said switch when the door is ajar.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In a household appliance including a stationary part and a door movably mounted thereon, the improvement comprising a door-open alarm device comprising:
- an alarm device having a pair of input terminals, an electric circuit coupled to said pair of input terminals for activating the alarm device when the door is in a predetermined range of positions corresponding to a partly open condition of the door and for deactivating the alarm device when the door is in a closed position or a wide open position, said electric circuit comprising;
a source of voltage, a switch having a first position corresponding to the door being in said predetermined range of positions and a second position corresponding to the door being in the closed or wide open position, said switch positions corresponding to the electric circuit being interrupted or closed, and electric time delay means responsive to a flow of current in the electric current from said voltage source when the switch is operated into said first position thereby to produce a delayed voltage variation at the input terminals of the alarm device which activates the alarm device, and a mechanical actuating element for the switch arranged on the door so as to operate said switch into the first position when the door is in said predetermined range of positions and to operate the switch into the second position when the door is in the closed or wide open position. - View Dependent Claims (12, 13, 14, 15, 16)
- an alarm device having a pair of input terminals, an electric circuit coupled to said pair of input terminals for activating the alarm device when the door is in a predetermined range of positions corresponding to a partly open condition of the door and for deactivating the alarm device when the door is in a closed position or a wide open position, said electric circuit comprising;
Specification