A step ladder device for improving the safe working elevation of a step ladder is provided. The step ladder device includes a working ladder portion that terminates in a rigid working tray providing a safety grab bar. The step ladder device is dimensioned and adapted to piggyback on to the step ladder so that the working ladder portion slidably moves in a coplanar orientation relative to the underlying step ladder, which enables the working tray to be locked in one of a plurality of selective working elevations relative to the underlying step ladder. As a result, the user can embrace the safety grab bar and balance themselves while standing on the upper rungs of the underlying step ladder or the lower rungs afforded by the working ladder portion.

A support assembly for a heating, ventilation, and/or air conditioning (HVAC) system includes a bracket comprising a base and an arm extending from the base. The arm includes a flange having a plurality of connectors configured to facilitate coupling to a clamp at each of a plurality of positions along the arm. The arm is configured to engage with and support a conduit of the HVAC system via the clamp.

A foldable enclosure apparatus having a locking device for a baby bed has a hub device, four lower assemblies, four upper assemblies, and at least one locking device. The lower assemblies are foldable and are pivotally mounted around the hub device. Each upper assembly is foldable and is mounted between two adjacent lower assemblies of the four lower assemblies. The at least one locking device is mounted with the corresponding lower assembly and the corresponding upper assembly for locking or unlocking the upper assemblies to enhance the safety of the foldable enclosure apparatus.

A locking device includes an outer portion and an inner portion. The outer portion has a bore formed at least partially axially therethrough and a channel formed laterally therethrough. The inner portion is positioned at least partially within the bore. A first link is positioned at least partially outside of the outer portion and coupled to the inner portion through the channel. A second link is coupled to the outer portion. A pin is coupled to the first link and the second link. The locking device is in an unlocked state when the inner portion is fully positioned within the bore, and the locking device is in a locked state when an end of the inner portion extends axially out of the bore.

A telescopic tube is disclosed. By pressing and rotating a switching button, an abutting section is aligned to a first hole of an outer tube and then elastically pushed by an elastic member, a pin section of the switching button is released from engagement with a fastening hole of the inner tube, and the position of the inner tube in the outer tube can be adjusted individually. After the inner tube is adjusted completely and the switching button is pressed to rotated again, the pin section is inserted into the fastening hole, the engaging section is engaged in the first hole. When the switching button is pressed, the movement of the inner tube makes the switching button release from the first hole and the third hole, and the inner tube, the control assembly and the inner mounting member are retractable in the through hole of the outer tube.

Disclosed are adjustable supports and frames. An adjustable support includes an inner bar, an outer bar and a locking/unlocking mechanism for controlling the relative movement of the inner and outer bars. The locking/unlocking mechanism includes a casing pivotally connected with the outer bar, a pin coupled with the casing, and an elastic member to engage the pin with the inner and outer bars.

A retractable column structure includes a metal outer tubular member, a retaining bracket, and an inner tubular member. The outer tubular member includes a wall having outer, inner and end surfaces. The outer tubular member includes slots extending from the end surface to the inner surface. A rear end of each slot includes a hook protruding out of the inner surface. The retaining bracket includes a frame member abutted against the wall and locking hooks inserted into the inner surface and locked onto each corresponding hook. The inner tubular member moveably penetrates into the retaining bracket disposed between the tubular members and is concealed inside the outer tubular member. Accordingly, excellent support of inner and outer tubular members can be achieved for stable sliding therebetween.

The invention comprises a scalable and foldable multipurpose frame structure configured with a generally flat-roof as a worksite and a peaked-roof as a recreational canopy, a cover retaining system and a ventilation system. The frame structure comprises a plurality of foldable wall trusses connecting a plurality of upright telescopic posts transversely forming a wall frame structure and a closed loop geometric footprint, a plurality of foldable roof trusses connecting a centrally disposed roof assembly to either the telescopic posts or the wall trusses transversely forming the roof. The cover retaining system comprises various spring clips for known-size frame members, and various clamps for unknown-size frame members, to secure roof and wall cover to the frame structure. The ventilation system comprises an enclosure that can utilize standard furnace air filters and existing air circulation devices. Multiple frame structures can be linked together to scale up space.

A mounting assembly includes a mounting block. A first shaft is supported by the mounting block and movable about a first rotational axis and a first extension axis with respect to the mounting block. A second shaft is coupled to the first shaft and movable about a second rotational axis.

The instant disclosure relates to a farrier hoof stand apparatus that includes a base, a vertical rise adjuster centrally and orthogonally affixed to the base. A plurality of buttresses are each affixed to the base and vertical rise adjuster (“VRA”). A stall jack is slidably positioned over the VRA opposite the base. A cradle is demountably positioned on the stall jack. A plurality of elongated tool holders are each affixed to the stall jack. A pin fastener is demountably coupled to the VRA and the stall jack. A plurality of magnets are each peripherally affixed to the base. The stall jack includes an anvil, an orifice positioned on the anvil, and a post affixed to the anvil. The post is slidably positioned over the VRA. The base is square and substantially planar. The plurality of elongated tool holders are each angularly affixed to the post opposite each other.