Swivel assembly and disassembly apparatuses for assembly and disassembly of a swivel include an apparatus base, a bearing collection basin carried by the apparatus base, a swivel head mount carried by the bearing collection basin, a swivel assembly/disassembly head carried by the swivel head mount and a swivel mounting mechanism carried by the swivel assembly/disassembly head.

A manual drilling apparatus equipped with a device for control of advance, which includes a fixed part and a mobile part with movement of translation relative to the fixed part during the drilling, as well as a system for control of the movement of translation of the mobile part relative to the fixed part, wherein the fixed part and the mobile part comprise respectively at least one fixed tube and at least one mobile tube which slide relative to one another, the fixed and mobile tubes being coaxial to the axis of rotation of the tool supported by the apparatus.

A universal drill stand for supporting a hand-held drill in an elevated and inverted position for drilling holes or inserting fasteners into a concrete ceiling or other overhead surface. The universal drill stand is extendable for use with varying ceiling heights. It eliminates the need for a worker to construct scaffolding or ascend a ladder or other elevating device to drill each hole, allowing the worker to remain safely on the floor and away from dust and debris associated with the drilling.

An intermediate link for a tool arm assembly is provided. The intermediate link includes first and second connectors that are at least partially rotatable about respective first and second rotation axes. The intermediate link includes first and/or second lock rotation mechanisms that are configured to selectively prevent rotation of the first and second connectors.

A support apparatus for supporting a curtain rod in a horizontal orientation during installation of the curtain rod includes a post with a top end and a bottom end which is extendable and retractable. Each one of a pair of extension arms is coupled to the post adjacent to the top end and extends outwardly from the post in one of a pair of opposing directions. Each one of a pair of saddles is coupled to a distal end of an associated extension arm with respect to the post. Each saddle comprises a central member that is coupled to and extends upwardly from the associated extension arm. An upper surface of the central member extends transversely with respect to the extension arm and is configured for supporting the bar, with the pair of saddles being configured for jointly supporting the bar in a horizontal orientation.

A mechanism for positioning at least two tools on a surface, which includes: a first body that is provided with a support section (3); driving means for moving the tools; and, control means for controlling the driving means and the tools, which are such that the tools can be brought with the driving means alternately with a tangent plane on their relevant machining surface or their relevant measuring surface adjoiningly against the surface against which the mechanism is supported.

A detachable table extension for a table having a first table piece and a support stand coupled to the first table piece. The table extension comprises a second table piece; a first coupler, and a second coupler. The first coupler includes a first end coupled to the second table piece; and a second end releasably coupled with the support structure of the table. The second coupler includes a third end attached to the second table piece and a fourth end rotatably coupled to the first coupler, the first table piece, or the support stand. The second coupler allows the second table piece to be placed on the first table piece or rotated away from the first table piece to then be on a same level as the first table piece.