Abstract: A drive mechanism for a down draft vent system comprising a vertically directed, retractable open framework, which can be moved between an extended position and a lowered position by means of a drive motor, comprising at least two switches for switching off the drive motor and at least one actuating element for actuating the switch. In this arrangement at least one switch is actuated by means of the at least one actuating element depending on a force (FW) acting externally on the open framework. In addition to an end switch-off of the drive motor, this invention provides a safety function as a result of a resistive load switch-off which is effective both in the event of a resistance from below during retraction and also in the event of a resistance from above during extension of the open framework.

Abstract: The invention relates to a drive mechanism for a down draft vent system comprising a vertically directed, retractable open framework (4), which can be moved between an extended position and a lowered position by means of a drive motor (9), comprising at least two switches (11, 12) for switching off the drive motor (9) and at least one actuating element (18, 37) for actuating the switch (11, 12). In this arrangement at least one switch (11, 12) is actuated by means of the at least one actuating element (18, 37) depending on a force (FW) acting externally on the open framework. In addition to an end switch-off of the drive motor, this invention provides a safety function as a result of a resistive load switch-off which is effective both in the event of a resistance from below during retraction and also in the event of a resistance from above during extension of the open framework.

Abstract: A drive mechanism for a down draft vent system comprising a vertically directed, retractable open framework, which can be moved between an extended position and a lowered position by means of a drive motor, comprising at least two switches for switching off the drive motor and at least one actuating element for actuating the switch. In this arrangement at least one switch is actuated by means of the at least one actuating element depending on a force (FW) acting externally on the open framework. In addition to an end switch-off of the drive motor, this invention provides a safety function as a result of a resistive load switch-off which is effective both in the event of a resistance from below during retraction and also in the event of a resistance from above during extension of the open framework.

Abstract: An extraction unit for ventilating a cooking surface is provided that includes a retractable device permitting an extraction component of the extraction unit to be extended and retracted, a control unit comprising at least one actuating component, which is used to trigger the retractable device by a manual user entry, and a fan unit. The fan unit can also be controlled by the control unit, by means of the manual user entry for the actuating component. In addition, the actuating component can be configured as a rotary component, allowing at least one additional function of the extraction device to be controlled by the user by the rotation of the actuating component. The actuating component can also adopt a lowered position when the extraction unit is inactive and a position, in which it protrudes from the control unit, when the extraction unit is active.

Abstract: The invention relates to a drive mechanism for a down draft vent system comprising a vertically directed, retractable open framework (4), which can be moved between an extended position and a lowered position by means of a drive motor (9), comprising at least two switches (11, 12) for switching off the drive motor (9) and at least one actuating element (18, 37) for actuating the switch (11, 12). In this arrangement at least one switch (11, 12) is actuated by means of the at least one actuating element (18, 37) depending on a force (FW) acting externally on the open framework. In addition to an end switch-off of the drive motor, this invention provides a safety function as a result of a resistive load switch-off which is effective both in the event of a resistance from below during retraction and also in the event of a resistance from above during extension of the open framework.