A mobile cart for use in virtual reality and monitor-based multi-participant experiences, DJ configurations, karaoke and audio uses incorporating vertical supports extending from the housing, supporting fixed, pivotal or rotative booms radially extending from the housing serving as supports for equipment such as microphones, positional sensors, head mounted displays, and retractable tethers performing cable management by holding one or more equipment cables above a user's head to prevent user cable-entanglement, such as, when using head mounted displays.

The snow surface skimmer is provided with: a skimmer body; a steering handle, which extends upward at a slant from the skimmer body; a seat installed on a region of the skimmer body that is behind the steering handle; and a skimming board. The skimming board is detachably attached to the bottom surface of the skimmer body by a skimmer attachment mechanism so that the attachment position in the front-back direction is adjustable. A skimming board suited to the skimming person's body type, build, etc. can be attached to the skimmer body at the appropriate position in the front-back direction.

An extendable strut assembly comprises a nested series of square or rectangular beams, the centermost of which may be a solid bar and all others are hollow sections. Glide strips of predetermined thicknesses take up the clearances between the beams and can be affixed to the beams by adhesive, so that beam surfaces run smoothly on the glide strips and the strut assembly can be extended and retracted with ease.

A rolling cart has a wheeled frame, telescoping vertically extendable members with glide strips, and a tiltable frame having glide strips interspersed with transfer balls to easily slide slabs or sheet materials for construction such as when installing countertops. The tiltable frame includes retractable lifter feet which support a slab in transit but drop below the level of the slab automatically when the tiltable frame is tilted to horizontal.

A rolling cart has a wheeled frame, telescoping vertically extendable members with glide strips, and a tiltable frame having glide strips interspersed with transfer balls to easily slide slabs or sheet materials for construction such as when installing countertops. A method is also described for measuring a minuend desired install height, subtracting a geometrically predetermined subtrahend, and adjusting the height from a floor surface to a pivot axis on the cart to equal the difference, said adjustment being effected by powered lifting means incorporated or ancillary to the cart.

A rolling cart has a wheeled frame, telescoping vertically extendable members with glide strips, and a tiltable frame having glide strips interspersed with transfer balls to easily slide slabs or sheet materials for construction such as when installing countertops. A method is also described for measuring a minuend desired install height, subtracting a geometrically predetermined subtrahend, and adjusting the height from a floor surface to a pivot axis on the cart to equal the difference, said adjustment being effected by powered lifting means incorporated or ancillary to the cart.

The multi-functional wagon includes a bin for storing and transporting products such as hay, vegetables, and/or dirt. The bin includes opposing side walls, opposing end walls extending between the opposing sidewalls, and a base, which provides a lower support surface for contents in the bin. The walls are foldable from an upright position to a lowered folded position. One or more containment units and a support assembly are removably connected to support pipes at corners of the bin.

An assembly storage rack, which comprises two sets of vertically arranged upright rods, at least two storage baskets are arranged between the upright rods, and adjustment blocks are arranged on each of the upright rods, the adjustment blocks and the upright rods are relatively fixed and pre-installed as the integral modular components, the storage baskets are detachably connected to the adjustment blocks on the upright rods on both sides; the storage basket comprises a first storage basket and a second storage basket arranged vertically in sequence, the first storage basket can be placed in the second storage basket; first adjustment blocks are arranged between the first storage basket and the upright rods.

An assembly storage rack, which comprises two sets of vertically arranged upright rods, at least two storage baskets are arranged between the upright rods, and adjustment blocks are arranged on each of the upright rods, the adjustment blocks and the upright rods are relatively fixed and pre-installed as the integral modular components, the storage baskets are detachably connected to the adjustment blocks on the upright rods on both sides; the storage basket comprises a first storage basket and a second storage basket arranged vertically in sequence, the first storage basket can be placed in the second storage basket; first adjustment blocks are arranged between the first storage basket and the upright rods.

A rolling cart has a wheeled frame, telescoping vertically extendable members with glide strips, and a tiltable frame having glide strips interspersed with transfer balls to easily slide slabs or sheet materials for construction such as when installing countertops. A method is also described for measuring a minuend desired install height, subtracting a geometrically predetermined subtrahend, and adjusting the height from a floor surface to a pivot axis on the cart to equal the difference, said adjustment being effected by powered lifting means incorporated or ancillary to the cart.