A work scaffold having a platform and leg assemblies rotatably attached to each end of the platform. The platform may have a handle connected to free end that extends out the sides of the platform, which engage with links attached to the leg assemblies and the platform to lock the scaffold in an open or closed position. The platform may have hooks that extend out beyond the ends of the platform from under the platform so a second work scaffold can be situated on the hooks. The platform may be formed of boards with holes that receive cross members. A method for using a work scaffold. A method for forming a work scaffold.

This invention provides a multi-task robotic assistant and a method for autonomous or manual, mobile or non-mobile applications thereof. The robotic assistant comprises a scaffold, which is constructed of vertical poles and horizontal frames surrounding it, a load carrier carried by the scaffold, a manipulator carried on the load carrier, an end effector mounted on the manipulator for carrying out a selected task, sensors attached to the scaffold that return sensing information of the work environment of the robotic assistant, and a PMA (Process Manager Apparatus) that supports execution of a plurality of applications and tasks. The method of operation is done by creating one or more tasks, which are generated, controlled and executed by the PMA. The tasks may follow a 3D environment model and a preset ROI (Range Of Interest) or advance according to a user commands and information received from the sensors onsite. The tasks may be concatenated one to another, thus generating a complete mission for the robotic assistant to carry out.

This invention provides a multi-task robotic assistant and a method for autonomous or manual, mobile or non-mobile applications thereof. The robotic assistant comprises a scaffold, which is constructed of vertical poles and horizontal frames surrounding it, a load carrier carried by the scaffold, a manipulator carried on the load carrier, an end effector mounted on the manipulator for carrying out a selected task, sensors attached to the scaffold that return sensing information of the work environment of the robotic assistant, and a PMA (Process Manager Apparatus) that supports execution of a plurality of applications and tasks. The method of operation is done by creating one or more tasks, which are generated, controlled and executed by the PMA. The tasks may follow a 3D environment model and a preset ROI (Range Of Interest) or advance according to a user commands and information received from the sensors onsite. The tasks may be concatenated one to another, thus generating a complete mission for the robotic assistant to carry out.

A railing system having a number of spaced apart support bases and a railing is provided. The railing includes a number of vertically extending stanchions connected to the support bases and a number of horizontally extending members extending between the vertically extending stanchions. The railing is configured to be shifted relative to the support bases between a stored position and an erected position. The railing is automatically secured in the erected position when the railing is shifted from the stored position to the erected position.

An apparatus for setting up a ladder or a step on a staircase comprises: a platform on which the ladder or the step can be set up; and a frame to support the platform on the staircase. The frame comprises at least two legs each pivotable about a common pivot axis or about respective pivot axes, wherein the common pivot axis or the respective pivot axes lie in a plane of the platform or parallel to the plane of the platform.

Provided is a height adjustable sawhorse including two rigid frame members pivotally articulated to one another and constituting a base member. Each frame member includes two legs, including a top utility portion extending from at least one of the frames. The utility portion is provided with a pair of extension members axially displaceable within the at least one frame member between a fully retracted position and a fully extracted position. The arrangement is such that at least the utility portion is configured for height adjustment relative to the base member between the two positions. The base member and the sawhorse may be provided with a locking arrangement configured for locking the extension members respective of the base member at least when in the extracted position. At least the displacement of the extension member into the retracted position may be facilitated only upon maneuvering of the locking mechanism.

An apparatus includes a platform having a first end and a second end and a handle. The apparatus includes a first leg assembly rotatably attached to the platform in proximity to the first end. The apparatus includes a second leg assembly attentively attached to the platform in proximity to the second end. When the first and second leg assemblies are essentially perpendicular to the platform, the apparatus is in a use state and the user is able to stand on the platform and be supported by the first and second leg assemblies. When the apparatus is in the use state, the user is able to pick up the apparatus by the handle with only one of the hands without tipping the apparatus. A method for a user with hands to stand on an apparatus. A work platform having legs which are coplanar with the platform when the legs are in a closed position. The work platform having a hinge bracket with a tab against which a leg contacts and is stopped when the leg is in an open position.

An apparatus includes a platform having a first end and a second end and a handle. The apparatus includes a first leg assembly rotatably attached to the platform in proximity to the first end. The apparatus includes a second leg assembly attentively attached to the platform in proximity to the second end. When the first and second leg assemblies are essentially perpendicular to the platform, the apparatus is in a use state and the user is able to stand on the platform and be supported by the first and second leg assemblies. When the apparatus is in the use state, the user is able to pick up the apparatus by the handle with only one of the hands without tipping the apparatus. A method for a user with hands to stand on an apparatus. A work platform having legs which are coplanar with the platform when the legs are in a closed position. The work platform having a hinge bracket with a tab against which a leg contacts and is stopped when the leg is in an open position.

A foldable walkway may include a platform having a first end and a second end longitudinally opposite the first end, a ladder pivotally coupled to the first end via a first pair of pivot joints, and a pair of supports pivotally coupled to the second end via a second pair of pivot joints. The ladder and the platform are configured to be manually pivoted about the respective first and second pairs of pivot joints. The ladder includes a first portion pivotally coupled to the first end of the platform via the first pair of pivot joints, a second portion movably coupled to the first portion to increase or decrease an extent of the ladder, and a spring having a first end coupled to the first portion and a second end coupled to the second portion.

A foldable walkway may include a platform having a first end and a second end longitudinally opposite the first end, a ladder pivotally coupled to the first end via a first pair of pivot joints, and a pair of supports pivotally coupled to the second end via a second pair of pivot joints. The ladder and the platform are configured to be manually pivoted about the respective first and second pairs of pivot joints. The ladder includes a first portion pivotally coupled to the first end of the platform via the first pair of pivot joints, a second portion movably coupled to the first portion to increase or decrease an extent of the ladder, and a spring having a first end coupled to the first portion and a second end coupled to the second portion.