A knockdown, portable lift is relatively compact and lightweight for transport and use where there is no existing means for lifting a load between a lower surface and an upper surface or where the existing means cannot be used. Components of the lift are stored in a base portion of the lift and are assembled on site for forming a lift frame extending between the upper and lower surfaces. A platform and drive assembly are supported on the lift frame and are driven together up and down tracks on each side of the lift frame using a rotary drive, such as a hand crank or electric motor, to power the drive assembly. The drive assembly is operable by a person on or off the platform from either the upper or lower surface or traversing stairs over which the platform is moving. The drive assembly incorporates a unique overspeed braking system and a unique clutch arrangement.

A lift system comprises a rail and a carriage assembly comprising a seat or platform for supporting a person to be conveyed along the rail, drive means arranged to engage the rail and controllable to drive the carriage assembly along the rail, energy storage means arranged to power the drive means, input means operable by a user to provide an input signal indicative of a desired movement of the carriage assembly along the rail, and control means arranged to receive the input signal and control the drive means in response to the input signal. The system includes charging means arranged to charge the energy storage means when the carriage assembly is at a first charging position on the rail. The control means is arranged to monitor at least one voltage characteristic of the energy storage means and/or at least one operational characteristic of the stair lift, and generate an alert signal in response to one or more of those characteristics, or a difference between one or more of those characteristics, fulfilling a defined criterion, criteria, condition, or conditions.

A lift system comprises a rail and a carriage assembly comprising a seat or platform for supporting a person to be conveyed along the rail, drive means arranged to engage the rail and controllable to drive the carriage assembly along the rail, energy storage means arranged to power the drive means, input means operable by a user to provide an input signal indicative of a desired movement of the carriage assembly along the rail, and control means arranged to receive the input signal and control the drive means in response to the input signal. The system includes charging means arranged to charge the energy storage means when the carriage assembly is at a first charging position on the rail. The control means is arranged to monitor at least one voltage characteristic of the energy storage means and/or at least one operational characteristic of the stair lift, and generate an alert signal in response to one or more of those characteristics, or a difference between one or more of those characteristics, fulfilling a defined criterion, criteria, condition, or conditions.

A stairlift has a load carrier, or chair, which can be levelled in both roll and pitch. Two level drive motors are provided which engage with a levelling wheel centred on the roll axis and when the level drive motors are driven in the same direction, the load carrier is driven about the roll axis. A linkage connects the level drive motors with the load carrier and is configured such that, when the level drive motors are driven in opposite directions, movement of the load carrier about the pitch axis is induced.

The invention relates to a telescopic staircase to be installed on construction sites for providing a safe staircase for workers during building construction. The telescopic staircase comprising at least one lateral guard comprising a top rail, a bottom rail and at least two newels, the bottom rail having a plurality of connecting holes, and a plurality of tread assembly comprising a tread plate, at least two stringer portions and at least two pairs of support members, each support member having at least one connecting hole, in which the at least one lateral guard includes a first portion being retractable into and extensible from a second portion, in which each support member substantially forms a 45° angle with the tread plate, and in which the support members are to be attached to the top surface of the bottom rail via attachment means through the connecting holes.

A rail segment for a stairlift and its method of formation are provided. The rail segment includes an elongate tube made of a first material, the tube comprising a first end, a second end, and a longitudinal retaining slot extending from the first end to the second end; a rack made of a second material, the rack comprising a first end and a second end, wherein the rack is held within the retaining slot; and anchor securing the rack within the retaining slot to the tube at or adjacent to ends of the tube.

A staircase mobility system is disclosed. The system includes a docking assembly that is configured to dock or undock with a dockable seat assembly. The docking assembly includes support rods configured to engage or disengage with the dockable seat assembly when docked or undocked, respectively. Further, the docking assembly includes dock connecters are disposed along the support rods. The dock connecters are configured to communicatively connect or disconnect with the dockable seat assembly when docked or undocked, respectively. Further, the system includes a drive assembly coupled to the docking assembly. The drive assembly includes a motor that is configured to drive the docking assembly along a guide rail in a forward or reverse direction, and to operate the docking assembly to dock or undock with the dockable seat assembly.

Systems, apparatuses, and methods are described for a stairlift overspeed safety system are disclosed. The overspeed safety system may include a centripetal cam assembly, a trigger assembly, and a jammer assembly. The centripetal cam assembly may include a spring-loaded plate and a plurality of centripetal cams connected to the spring-loaded plate, configured to move to an extended position when the rail speed exceeds the speed threshold. The trigger assembly may include a trigger plate configured to be pushed by at least one of the centripetal cams when moved to the extended position. Pushing the trigger plate may cause a switch to open to shut off power to the motorized stairlift. The jammer assembly may include a jammer configured to wedge between teeth of a rack and pinion of the motorized stairlift to initiate a deceleration to stop movement of the motorized stairlift.

An overspeed governor for a stairlift includes a governor frame mountable to a carriage of a stairlift. A wheel is engageable with a rail of the stairlift along which the carriage is moveable. Translation of the carriage along the rail is transformed into rotation of the wheel or vice versa. A safety braking device has a braking surface movable between a first position and a third position. In the first position the braking surface is not allowed to engage the rail. A braking member is coupled to the wheel such that when said wheel rotates at a speed at or above a predetermined threshold, the braking member is moved from the first position to the third position. In the third position the braking surface engages said rail with a braking force to stop movement of the carriage along the rail. A soft landing means gradually slows movement of the carriage.

A staircase mobility system is disclosed. The system includes a docking assembly that is configured to dock or undock with a dockable seat assembly. The docking assembly includes support rods configured to engage or disengage with the dockable seat assembly when docked or undocked, respectively. Further, the system includes a drive assembly coupled to the docking assembly. The drive assembly includes a motor that is configured to drive the docking assembly along a guide rail in a forward or reverse direction, and to operate the docking assembly to dock or undock with the dockable seat assembly.