A fixed rod and a pull rod slidingly engageable in the fixed rod with a plug mounted inside the bottom end of the pull rod and a push button mounted at the bottom of the plug. The push button has a first position and a second position with respect to the plug. When the push button is in the first position with respect to the plug, the pull rod is slidable up and down inside the fixed rod. When the push button is located in the second position with respect to the plug, the pull rod is removable from the fixed rod.

An apparatus providing a platform for installing screws can include a cart with wheels, an assembly rail system mounted to the cart, and a screw assembly mounted to the assembly rail system. The screw assembly can include a screw feeding device, a screw guide tube, and a screwing device such as a drill that rotates a drive shaft that engages a screw received from the screw guide tube. The screw feeding device can include a screw rack that holds screws, and a magnetic grip that moves a screw from the screw rack to a screw feeding tube that is connected to the screw guide tube. The screw guide tube can include bristles for centering a screw received from the screw feeding tube. The apparatus can include a computer control system that operates the screwing device and the screw feeding device.

A toolbox apparatus having mobility is disclosed. The mobile toolbox apparatus comprises a toolbox, a platform on which the toolbox is mounted, supporting means provided on the operative bottom surface of the platform, and at least one wheel coupled to at least one supporting means for providing mobility to the mobile toolbox apparatus. The apparatus comprises a handle coupled to the platform, wherein the handle has a telescopic configuration. The apparatus further comprises a platform extension hingeably coupled to the platform.

A cart for carrying a cut-off saw having a saw blade. The cart includes a frame with upper and lower portions, a wheel arm pivotably coupled to the lower portion about a first axis, and a rear wheel assembly coaxial with the first axis and coupled to the frame and the wheel arm. The cart includes a front wheel coupled to an end of the wheel arm opposite the rear wheel assembly, an adjustment lever pivotably coupled to the upper portion about a second axis, and a link having a first end pivotably coupled to the adjustment lever and spaced from the second axis, and a second end pivotably coupled to the wheel arm between the first axis and the front wheel. Pivoting the adjustment lever about the second axis pivots the wheel arm about the first axis to adjust a vertical position of the front wheel relative to the upper portion.

A raisable and lowerable storage system is provided comprising a steel container with multiple compartments, a scissor lift device attached to at least a bottom area of the container, wheels attached to a lower area of the scissor lift device. The scissor lift device raises and lowers the container to a desired level. The scissor lift device raises the container to a maximum height of about eight feet. The wheels support the container as the container is placed into a bed area of a vehicle for transportation. The wheels roll along tracks attached to the bed area of the vehicle. The container is secured before the vehicle begins moving to prevent the container from rolling about as the vehicle moves. A battery in the container is charged while the container is in a secured position and the vehicle moves.

A tool support includes a frame that is configured to support a tool and a powered track supported on the frame. The powered track includes a drive roller, an idler roller, and an endless belt that extends around the drive roller and the idler roller. The tool support also includes a first motor supported on the frame. The first motor is operable to drive the drive roller and rotate the endless belt. The tool support further includes a second motor supported by the frame. The second motor is configured to be coupled to the tool to drive the tool supported on the frame.

A mobile welding cart designed to incorporate and integrate components to lift the welding unit, and to provide power for accessory components and tools, is provided. The cart comprises a base frame, supported by four wheels, connected to a lifting platform by way of a scissor lift mechanism. The lifting platform is operable between an expanded position and a retracted position. A storage compartment is located on the lifting platform and a welder is located on top of the storage compartment. The cart also includes a power box connected directly to the rear of the storage compartment that is designed to receive power from a single extension cord connected to the input power of choice. This power box may provide power to all required components and may be equipped with components to convert the power emanating from a power supply in the power box.

A cart for carrying a cut-off saw having a saw blade. The cart includes a frame with upper and lower portions, a wheel arm pivotably coupled to the lower portion about a first axis, and a rear wheel assembly coaxial with the first axis and coupled to the frame and the wheel arm. The cart includes a front wheel coupled to an end of the wheel arm opposite the rear wheel assembly, an adjustment lever pivotably coupled to the upper portion about a second axis, and a link having a first end pivotably coupled to the adjustment lever and spaced from the second axis, and a second end pivotably coupled to the wheel arm between the first axis and the front wheel. Pivoting the adjustment lever about the second axis pivots the wheel arm about the first axis to adjust a vertical position of the front wheel relative to the upper portion.

A manipulation cart system for manipulating a tool described herein includes a chassis subsystem, a locomotion subsystem, at least one manipulation subsystem, at least one attachment subsystem, and at least one control subsystem. The locomotion subsystem may include a turn pivot. The at least one manipulation subsystem may include at least one tilting subsystem. Preferably the cart system at least partially relieves the physical demands of manipulating the tool and at least partially protects from stress-induced injuries associated with manipulating the tool.

A tool storage device system includes a base and a tool storage container removably coupled to the base. The tool storage container slides in a first direction relative to the base to attach the tool storage container to the base, and the tool storage container slides in a second direction, opposite the first direction, relative to the base to remove the tool storage container from the base.