In a mechanism for recycling energy from stairs (200), a step platform (210) is moveable between an upper and lower position. An energy storage device (220), coupled to the platform (210), stores energy when a downward force is applied thereto, causing the step platform (210) to move to the lower position. The energy storage device (220) also releases stored energy as the step platform (210) moves from to the upper position. A controllable locking mechanism (240) locks the step platform (210) in the lower position when the downward force has caused the step platform (210) to move into the lower position. A sensor (250) determines when a downward force has been applied to the next higher step platform (250). A controller (300) signals the controllable locking mechanism (242) to unlock the step platform (250) when the step platform (250) is in the lower position and when the downward force has been applied to the next higher step platform (250).

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.

In a mechanism for recycling energy from stairs (200), a step platform (210) is moveable between an upper and lower position. An energy storage device (220), coupled to the platform (210), stores energy when a downward force is applied thereto, causing the step platform (210) to move to the lower position. The energy storage device (220) also releases stored energy as the step platform (210) moves from to the upper position. A controllable locking mechanism (240) locks the step platform (210) in the lower position when the downward force has caused the step platform (210) to move into the lower position. A sensor (250) determines when a downward force has been applied to the next higher step platform (250). A controller (300) signals the controllable locking mechanism (242) to unlock the step platform (250) when the step platform (250) is in the lower position and when the downward force has been applied to the next higher step platform (250).

A system for assisting a user with navigating a set of stairs includes a pulley system positioned adjacent to the stairs, the pulley system including a first pulley, a second pulley, and an elongated member coupled to and looped around the first pulley and the second pulley. The system further includes a motor coupled to the first pulley, a sensing assembly operatively coupled to the pulley system, the sensing assembly being structured and configured to sense that a force is being applied to or that is about to be applied to the elongated member by the user, and a controller coupled to the motor and the sensing assembly. The controller is structured and configured to, responsive to the sensing assembly sensing the force, turn the motor on to drive the first pulley.

A milling device for implementing a milling operation including a milling unit having a body including a milling chamber that can be filled with a material to be milled, a rotor mounted so as to be able to rotate around a shaft in the body, a screen, and a drive unit controlling the movements of the rotor with respect to the screen during the milling operation. The drive unit is designed to impart an oscillating movement to the rotor around the shaft, the oscillation angle being variable during the milling operation. The milling chamber is configured to direct the product to be milled in a direction substantially parallel to the rotation shaft of the rotor.

An extendable rail system for a flight of stairs to exit a heliport comprising a railing positioned along the flight of stairs, where the railing includes a handrail; a plurality of anchors attached to the railing, where the plurality of anchors support the handrail; a rail extension attached to a top portion of the railing, where the rail extension moves between a first position and a second position; a motor coupled to the rail extension, where the motor moves the rail extension between the first position and the second position; a first actuator positioned on the heliport, where the first actuator activates the motor; and a second actuator positioned at a base of the railing, where the second actuator activates the motor.

A stair assistance device includes a rail unit having a toothed rail which has a teeth row. A base movably is engaged with the toothed rail and includes a pulley unit and a brake unit. The pulley unit is movable relative to the rail unit. The brake unit includes a roller which is engaged with the teeth row. A brake member is movably engaged with or disengaged from the roller. A grip unit is movably connected to the base and drives the brake member. The grip unit includes a grip which extends outward relative to the rail unit. The users hold the grip unit to control the brake member to be disengaged from the roller. The stair assistance device moves the users by the cooperation between the roller and the teeth row.

A stairs assistance device including a frame member, the frame member including an operable grasping jaw adapted to operably grasp a handrail of the stairs, the operable grasping jaw including a rail-grasping configuration and a released configuration, the rail-grasping configuration placing the operable grasping jaw in a fixed relationship with the handrail, the released configuration placing the operable grasping jaw in a movable relationship with the handrail, projecting laterally from the frame member, a hand grip configured to assist the user grip the frame member during use, a manually-operated actuator configured to assist actuation of the operable grasping jaw by the user, the manually-operated actuator adapted to adjust the operable grasping jaw between the rail-grasping configuration and the released configuration, and an arm support configured to support an arm portion of the user.

A stair assistance device for assisting a person to climb up and down stairs. The device may include a handle, a saddle for engagement with a guide rail mounted alongside the stairs, the saddle being connected to the handle and being arranged for sliding motion along the guide rail, a braking rail for mounting alongside the stairs parallel to the guide rail, and a bracket connected to the saddle, the bracket being for selectively engaging with the braking rail to prevent motion of the handle and saddle along the guide rail. The bracket and the braking rail together form a releasable ratchet that, when engaged, prevents movement of the handle in a downstairs direction and allows movement of the handle in an upstairs direction. The handle may be coupled to the pawl of the ratchet such that a predetermined movement of the handle will disengage the pawl from the ratchet.

A stairway safety rail system for assisting in ascending and descending a staircase. The stairway safety rail system includes a rail having a channel disposed along a longitudinal axis and a guide block slidably joined to the channel having a plurality of bearings that can move the guide block along the longitudinal axis. A pivot assembly having a rotatable sleeve and a pivot slot secures to the guide block. A handle removably secures to the rotatable sleeve, wherein the rotatable sleeve is pivotally disposed in a working configuration and stored configuration within the pivot slot via a spring loaded release pin. In an alternative embodiment, the plurality of bearings within the guide block each have an adjustable tension, the handle is telescopically adjustable, and a braking strip is applied to a lower end of the channel to restrict movement of the bearings of the guide block.