Abstract: A reclining element includes a pivotal backrest, a headrest, which is coupled in an articulated manner thereto, and optionally a footrest. These pivotal parts can be displaced by an electromotive adjusting device. The reclining element is so configured as to eliminate the need for the link lever fastened to the pivot shaft, whereby the forces required for adjusting can be transmitted by an appropriate kinematic system to the footrest or backrest. In order to raise the backrest, an articulated lever (20) is used, which is provided in the form of a toggle lever and which is connected to the adjusting element. A lever (20a) of the articulated lever (20) is coupled to the adjusting element (18). The other lever (20b) is coupled to the backrest (11) so that when the adjusting element travels out of the end position, the joint (21) executes a guided linear movement and a rotational movement that leads to a blocking of the articulated lever (20) in a particular blocking position.

Abstract: The invention relates to an electromotive adjustment drive which is operated by a safety voltage, for instance, an adjustment drive for the adjustable components of pieces of furniture. The adjustment drive is equipped with a hand-operated device and a control unit which is operated with the device and connected by at least one cable to a voltage source to which the mains voltage can be supplied. The adjustment drive is so configured as to allow an electrical separation between the voltage source and the transformer, when the adjustment drive is not in operation, without requiring special cables. Furthermore, the adjustment drive should be configured in such a way that the item equipped with the adjustment drive does not contain any cables or lines to which mains voltage is supplied. According to the invention, there is provided a power supply module (12) which is spatially separated from the control unit (14) and arranged between the control unit (14) of the adjustment drive (11) and the voltage source.

Abstract: An electromotive linear drive includes one or more drive motors and a corresponding number of torque-reducing transmissions and corresponding driven spindles and a casing. The casing is comprised of two casing parts, whereby the abutting surfaces of the casing parts are sealed by a sealing element or a plurality of sealing elements. Connecting terminals for mechanical and/or electrical components are provided on the exterior of the casing parts.

Abstract: An operational check of the safety unit or the safety circuit takes place within the delay time of the relay, assigned to each motor, caused by the pick-up delay or the release delay. Also, the control unit can be equipped such with at least one safety component and/or safety circuit for controlling the control unit that an operational check of the control unit takes place between the operation of an operating element of the hand switch and the starting of the motor or motors. The operating time and the release time of the relay may be delayed by a suitable component so that sufficient time is available for the operational check.

Abstract: A seat-recliner fitting is provided for the motor-driven inclination adjustment of a backrest (1) and for the motor-driven folding out and folding in of a two-part leg support (3A, 3B), whereby the fitting is completely pre-installed at the factory between two lateral plates (4), which are connected to cross-members (40, 41) and to which each lateral wall (42) provided with an arm rest is attached.

Abstract: A hand-held control device for controlling a drive having one or more d.c. motors and/or a.c. motors for adjusting a piece of furniture, includes a housing having a lower housing part and an upper housing part. A circuit board is received in the housing and has switch elements. Further accommodated in the housing is a battery pack for providing emergency power supply for operation of drive functions and/or power supply for operating the hand-held control device. A cable and/or an infrared transmitter unit operatively connects the hand-held control device with the drive, wherein the circuit board and/or the upper housing part is securable to the lower housing part in at least two positions.

Abstract: An adjustment device for adjusting an article of furniture, includes a drive unit having at least one direct current positioning motor connected to a mains power source; a control unit with at least one switching device for actuating the positioning motor(s); and a mains disconnect relay connected to a mains power plug assembly or a supply line connecting the voltage source to the mains. An additional switching unit which is separate from the switching device(s) for actuating the positioning motor(s) is provided for actuating the mains disconnect relay.

Abstract: An electromotive drive unit for an adjustable structure, for example a tabletop of a piece of furniture, includes at least one drive motor for adjusting a position of a structure. The drive motor includes a measuring unit for direct or indirect measurement of drive-specific parameters. A control unit is provided for controlling operation of the drive motor, and is acted upon by an evaluation unit for intervention in the adjustment process for the structure, when an actual value of the drive-specific parameters deviates from a desired value.

Abstract: An electromotive adjustment assembly, includes at least two spindles, each spindle carrying a spindle nut, with both spindle nuts secured against executing a rotation movement. A motor unit is positioned between the spindles and coupled in driving relationship with the spindles for rotating the spindles, whereby the spindles are secured against displacement in longitudinal direction. Connected, directly or indirectly, to the spindle nuts are flexible pull strands which are trained over deflection rollers for attachment with their free ends to profiled lifting members which are secured at an angle to a structure to be adjusted.

Abstract: An electromotive adjustment assembly, includes at least two spindles disposed in parallel spaced-apart relationship, and a motor unit coupled in driving relationship with the spindles for operating the spindles.

Abstract: An electromotive linear drive includes one or more drive motors and a corresponding number of torque-reducing transmissions and corresponding driven spindles and a casing. The casing is comprised of two casing parts, whereby the abutting surfaces of the casing parts are sealed by a sealing element or a plurality of sealing elements. Connecting terminals for mechanical and/or electrical components are provided on the exterior of the casing parts.

Abstract: A linear drive, useful in particular as drive for a piece of furniture, includes at least one spindle, and a drive mechanism, having a drive motor and a reduction gear in driving relationship with the drive motor, for rotatably driving the spindle. The drive mechanism is provided with a drive element having an input member and an output member, with the input member selectively adjustable with respect to the output member.

Abstract: A linear drive to drive an article of furniture includes at least one drive motor that is coupled with a linearly moveable driven member and a braking system with a controlled braking element which commences the braking function without delay. The braking system can have a small footprint. According to the invention, the drive for the article of furniture can include an actuator, such as a piezo actuator coupled directly or indirectly with the braking element acting on the rotor shaft of the drive motor. The piezo actuator is preferably connected to the electric terminals of the drive motor. The linear drive can be used to adjust the support for a lath bed or a chair.

Abstract: An electromotive drive mechanism for a body of furniture, includes a worm drive which is activated by a motor and includes a worm received in the casing and a worm wheel in engagement with the worm. Received in the casing is a support body which is closely fitted around the worm and includes a receiving opening for engagement by the worm wheel.

Abstract: An electromotive linear drive mechanism, in particular a drive mechanism for a body of furniture, includes an electric motor having an output journal and a rotating spindle which has mounted thereon a nut, secured against rotation. The nut is operatively connected to the body of furniture, for movement in longitudinal direction of the spindle when the spindle rotates. A worm drive includes a worm which rotates about an axis of rotation and is in engagement with the output journal of the electric motor. Connecting the worm drive to the spindle are at least two worm gears which are in engagement with the worm and arranged in symmetric disposition with respect to the rotation axis of the worm. Each worm gear which is connected to a cylindrical gear is in operative engagement with the respective cylindrical gear meshing with the other worm gear.

Abstract: An electromotoric operating mechanism, such as a single drive or dual drive, for height adjustment of an article of furniture, especially for furniture items useful in the field of hospitals and/or nursing, includes a drive having an output member in the form of a worm wheel, a spindle mechanism including an adjusting spindle in driving relationship with the drive, and a spindle nut mounted on the adjusting spindle and interacting with a link member in fixed rotative engagement with a shaft of an adjustable piece of furniture, and a clutch mechanism releasably coupling the output member with the adjusting spindle. The clutch mechanism includes a guide member, which is fixedly secured on the adjusting spindle, and a clutch gear, with the worm wheel rotatably mounted on the guide member. The clutch gear is arranged on the guide member in fixed rotative engagement but axially displaceable relative thereto.

Abstract: A hospital bed or nursing bed has movable components which can be adjusted by a drive including a plastic casing and an electric motor accommodated in the casing. A control block is operatively connected to the drive and includes a circuit board for the control of the electric motor. In order to realize a night light when the lighting of the room is switched off, without significant modification of the plastic casing, a light source is provided which is connected to an electrically conductive pathway of the circuit board. The light source is suitably disposed inside the casing and directly placed onto the electrically conductive pathway of the circuit board. Juxtaposed to the light source is a luminescent rod or light-conducting rod penetrating a wall or lid of the casing for transmitting light rays radiating from the light source.

Abstract: An electromotive drive mechanism for a piece of furniture, includes a gearmotor having a rotor rotating about a rotational axis, an adjusting spindle for operation of a piece of furniture, and a gear unit connecting the spindle to the rotor of the gearmotor for rotating the spindle about a rotational axis, with the rotational axis of the rotor extending parallel and at a distance to the rotational axis of the spindle. The gear unit includes a nut placed on the spindle for movement in longitudinal direction of the spindle when the spindle rotates, and a first pair of helical gears which are in mesh with one another for reducing the output speed of the gearmotor as transmitted to the spindle.

Abstract: A flat lifting device includes an outer and an inner hollow section rail with closed cross section and with a substantially greater width than a thickness. One of the section rails is acted upon by a drive unit having a linearly moveable drive member for shifting the one section rail relative to the other section rail. Opposing surfaces of the outer and inner section rails are preferably provided with meshing profiles which extend in moving direction of the slideable section rail.