An adjustable and retractable rod includes an external pipe fitting, a multi-section rod and a positioning unit. The multi-section rod includes a first and at least one second foldable rod, where the first and second foldable rods have the same outer diameter, and the positioning unit includes a linkage rope, a positioning component and a locking component, which are used to pull the external pipe fitting and the first foldable rod relative to each other. The linkage rope can be dragged, and the locking component and the positioning unit interlocked or separated. When the locking component and the positioning component are interlocked, the external pipe fitting can be connected to the multi-section rod unit in an unfolded state. When the locking component moves away from the positioning component, the first and second foldable rods of the multi-section rod are folded and in parallel relative to the external pipe fitting.

A tool for cleaning a structure is provided. The tool includes an extension pole having a length, the extension pole including three or more cylindrical segments having different respective diameters, the segments being arranged in a telescoping configuration to permit the length of the extension pole to be adjusted to a desired length; locking nuts structured to releasably lock adjacent ones of the segments to one another; a grip provided on a most proximal one of the segments; and an attachment member provided on a most distal one of the segments, the attachment member being structured to removably attach at least one cleaning accessory.

A modular safety fence assembly is disclosed. The safety fence may include a fence panel assembly having a top rail, a bottom rail, and mesh panel. The safety fence panel assembly may also support post assembly capable of supporting the fence panel assembly and an anchor assembly which may anchor the support post assembly to the floor using one or more relatively shallow holes formed in the floor.

A holder including a holding body configured for displaceable attachment to a rod and including a rod passage opening for the rod, and a clamping unit movable between a clamp position and an enable position. The clamping unit, in case of the holding body attached to the rod, in the enable position is capable of enabling a shifting movement of the holding body along the rod and in the clamp position is capable of exerting a clamping force to block a shifting movement of the holding body along the rod. An operating unit is provided for user-operated moving of the clamping unit between the clamp position and the enable position. The clamping unit is a wrap spring unit wrapping around the rod passage opening and comprising a plurality of wrap springs disposed adjacent to each other in a longitudinal axis direction of the rod passage opening, each spring wrapping around the rod passage opening over more than 180°, and/or a wrap spring wrapping around the rod passage opening over more than 360°, wherein the respective wrap spring is movable by the operating unit between a constricting condition providing the clamp position of the clamping unit and an enlarging condition providing the enable position of the clamping unit.

Disclosed is a clamp sleeve adapted to be sleeved on an object, including: a body and a first fastening assembly. The body has first and second ends, and includes a receiving portion therein. The receiving portion has first and second openings at the first and second ends. The body is provided with a gap, the gap has two ends extending to the first and second openings, and the gap is communicated with the receiving portion. The body is provided with first extending portions at two sides of the gap along a longitudinal direction, the first extending portions is provided with a first connecting sheet near the first opening, and the first connecting sheet is connected to each of the first extending portions and connected with the first opening. The first connecting sheet is provided with a first thin thread intersecting with the gap. The first fastening assembly is disposed on the first extending portions.

In broad embodiment, the present invention is a mechanism that allows one to impede the movement of a firearms adjustable and or collapsible butt stock. The device wraps around the buffer tube or stock shaft of a firearm and prevents to the movement of the previously adjustable portion of the firearm stock. The variable shaft locking device can be easily attached and removed, and allows a user to temporarily “lock” the adjustable portion without damaging the firearm or impeding its functionality.

There is provided a multi-leg stand, for photography and the like comprising a vertical main tube, a supporting structure for the vertical main tube comprising a plurality of legs connected to the bottom portion of said vertical main tube and including a plurality of lockable collars rotatably secured around the outer circumference of the vertical main tube and a leg rigidly secured to each of the lockable collars; each leg extends horizontally outwardly from one of the collars and including an outer end portion extending downwardly. At least one of the downwardly extending end portions, comprises a secondary tubular member having an opening at each end designed to securely hold a replaceable member; the replaceable member extends downwardly from the lower end opening thus providing further support for the stand. The stand can thus support either multiple lights or a combination of lights and reflectors or other elements.

A grab plate assembly for retaining an inner cylindrical tube in a fixed telescopic position relative to an outer cylindrical tube in a telescoping post. The assembly comprises a grab plate having a polygonal tube receiving opening therein, a lever arm integral with and angled relative to the grab plate, and an actuating rod. Turning the actuating rod in a first direction lifts the lever arm causing multiple side edges of the tube receiving opening to compressively engage multiple points on the inner cylindrical tube thereby resisting telescopic movement of the inner cylindrical tube relative to the outer cylindrical tube. Turning the actuating rod in a second opposite direction lowers the lever arm causing the side edges of the tube receiving opening to disengage from the inner cylindrical tube and to permit telescopic movement of the inner cylindrical tube relative to the outer cylindrical tube.

In an aspect, provided is an adjustable telescoping assembly. The adjustable telescoping assembly comprises a first support member and a second support member that is slidable upon the first support member and which defines an interior volume. At least one damping element is provided that extends from outside the second support member, through the second support member into the interior volume and engages the first support member.

An exercise machine including a vertical post and an adjustable pulley. The vertical post includes a plurality of engagement holes. The adjustable pulley is slideably connected to the vertical post. The adjustable pulley includes a pull pin and a lock. The pull pin is selectively engageable with one of the plurality of engagement holes. In response to the pull pin being engaged with an engagement hole, movement of the adjustable pulley relative to the vertical post is restricted. The lock is selectively engageable with the pull pin. In response to the lock being engaged with the pull pin, movement of the pull pin is restricted.