The invention concerns an adjustable bed (10) having zero wall clearance and zero gravity functionality. The bed comprises a frame (20) and an adjustable mattress support platform (11) having a plurality of articulated support sections (12, 16, 18) pivotally mounted with respect to one another for relative angular adjustment, and actuator means (52) for effecting coordinated movement of the support sections to reconfigure the bed, between a flat lowered configuration and a raised configuration for supporting an occupant in a zero gravity recumbent position. The actuator means comprises a single actuator, preferably a single linear actuator.

The invention concerns an adjustable bed (10) having zero wall clearance and zero gravity functionality. The bed comprises a frame (20) and an adjustable mattress support platform (11) having a plurality of articulated support sections (12, 16, 18) pivotally mounted with respect to one another for relative angular adjustment, and actuator means (52) for effecting coordinated movement of the support sections to reconfigure the bed, between a flat lowered configuration and a raised configuration for supporting an occupant in a zero gravity recumbent position. The actuator means comprises a single actuator, preferably a single linear actuator.

An electrically adjustable piece of furniture comprises a first and at least one second actuator for adjusting a component of the piece of furniture and a controller for controlling the first and at least one second actuator. The actuators each have a first element and a second element which are displaceable relative to each other, and a sensor attached to the first element and adapted to measure a distance between the first and second elements. The distance measurement is based on a time-of-flight measurement of a wave. The controller is arranged to determine an absolute position of each actuator from the respectively measured distance.

An electrically adjustable piece of furniture comprises a first and at least one second actuator for adjusting a component of the piece of furniture and a controller for controlling the first and at least one second actuator. The actuators each have a first element and a second element which are displaceable relative to each other, and a sensor attached to the first element and adapted to measure a distance between the first and second elements. The distance measurement is based on a time-of-flight measurement of a wave. The controller is arranged to determine an absolute position of each actuator from the respectively measured distance.

An article of adjustable furniture has at least one support section and a drive mechanism operable to effect pivotal movement of the at least one support section, the drive mechanism including at least a first and a second component pivotally joined by a bearing assembly, such that operation of the drive mechanism causes pivotal movement between the first and second components so as to effect pivotal movement of the at least one support section.

An article of adjustable furniture has at least one support section and a drive mechanism operable to effect pivotal movement of the at least one support section, the drive mechanism including at least a first and a second component pivotally joined by a bearing assembly, such that operation of the drive mechanism causes pivotal movement between the first and second components so as to effect pivotal movement of the at least one support section.

An articulating bed incorporates a support frame with a head end, a foot end and having side frame members. A carriage having a seat support is carried by the frame, mounted with wheels engaging the side frame members to translate from a first position through a range progressing toward the head end to a fully translated position. An upper body support is rotatably connected to the carriage and carries a mattress support. At least one telescoping rotation strut is attached at a first end and rotates through an axle pivotally attached to the side frame members. The telescoping rotation strut engages at a second end the upper body support. At least one fixed length rotation arm is carried at a first end by a rotating tube and pivotally attaches to the upper body support at a second end. The rotating tube is mounted on wheels constrained in a track and translates laterally in the track to contact a track end proximate the head end of the frame at a termination of a first range of motion. The telescoping strut approaches a vertical orientation and transfers reaction forces resulting from translation of the carriage to the fixed length rotation arm, whereupon the telescoping rotations struts extend.

An articulating bed incorporates a support frame with a head end, a foot end and having side frame members. A carriage having a seat support is carried by the frame, mounted with wheels engaging the side frame members to translate from a first position through a range progressing toward the head end to a fully translated position. An upper body support is rotatably connected to the carriage and carries a mattress support. At least one telescoping rotation strut is attached at a first end and rotates through an axle pivotally attached to the side frame members. The telescoping rotation strut engages at a second end the upper body support. At least one fixed length rotation arm is carried at a first end by a rotating tube and pivotally attaches to the upper body support at a second end. The rotating tube is mounted on wheels constrained in a track and translates laterally in the track to contact a track end proximate the head end of the frame at a termination of a first range of motion. The telescoping strut approaches a vertical orientation and transfers reaction forces resulting from translation of the carriage to the fixed length rotation arm, whereupon the telescoping rotations struts extend.

An articulating bed incorporates a support frame with a head end, a foot end and having side frame members. A carriage having a seat support is carried by the frame, mounted with wheels engaging the side frame members to translate from a first position through a range progressing toward the head end to a fully translated position. An upper body support is rotatably connected to the carriage and carries a mattress support. At least one telescoping rotation strut is attached at a first end and rotates through an axle pivotally attached to the side frame members. The telescoping rotation strut engages at a second end the upper body support. At least one fixed length rotation arm is carried at a first end by a rotating tube and pivotally attaches to the upper body support at a second end. The rotating tube is mounted on wheels constrained in a track and translates laterally in the track to contact a track end proximate the head end of the frame at a termination of a first range of motion. The telescoping strut approaches a vertical orientation and transfers reaction forces resulting from translation of the carriage to the fixed length rotation arm, whereupon the telescoping rotations struts extend.

Linear dual actuator for lying or sitting furniture having at least two sections (2,3), which with one end is rotatably embedded in the article of furniture and where each section (2,3) with an arm (5,7) secured to a pivot shaft (4,6) can be adjusted by means of the linear dual actuator. The dual actuator comprises a housing (8) with a drive at each end, which comprises an electric motor (11), which through a transmission (12) is in driving connection with a spindle (13). On the spindle (13) is arranged an activation element (14) with a spindle nut in engagement with the spindle (13), where the activation element (14) can be brought into engagement with the arm (5,7) for adjusting the sections (2,3). In case of power failure there is the problem that the back rest and leg rest section cannot be lowered to a plane level, which can make the bed uncomfortable or completely impossible to sleep in. This problem is solved in that a rotating element in the drives comprises a connection (21), which is accessible from the outer side of the housing (8) for connecting a tool, e.g. an Allen key (22) for driving the respective drives for the back rest and leg rest section (2,3) for lowering of these to a horizontal position.