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A swivel caster. A caster (or castor) is an undriven wheel that is designed to be attached to the bottom of a larger object (the "vehicle") to enable that object to be moved. Casters are used in numerous applications, including shopping carts, office chairs, toy wagons, hospital beds, and material handling equipment. High capacity, heavy duty ...
Step stools are halfway between a ladder and a stool, being used, as a support platform, for reaching targets that are at heights between ~2m and ~3m. The most common modern type is made with two separate ladders connected to each other at the upper end, where there is a platform with an area big enough to stand with both feet on it, having the ...
An air caster is a pneumatic lifting device used to move heavy loads on flat, non-porous surfaces. Its operation is similar to a hovercraft , as it uses a thin layer of air as a way to float a very small distance off the ground.
A caster board has two narrow platforms known as "decks" that are joined by a torsion bar, which consists of a metal beam, usually coated by rubber, that houses a strong spring. One polyurethane wheel is mounted to each deck with a caster so that each wheel can steer independently, and each caster has a steering axis that is tilted about 30 ...
The spring rate or spring constant of a spring is the change in the force it exerts, divided by the change in deflection of the spring. Vehicles that carry heavy loads, will often have heavier springs to compensate for the additional weight that would otherwise collapse a vehicle to the bottom of its travel (stroke).
That was the conclusion of Gray’s clinical research trial in which adaptive disclosure therapy was used with 44 active-duty combat Marines with PTSD and moral injury. In six 90-minute sessions, Gray found that the Marines experienced “substantive” improvement in their symptoms.
Move over Hoda Kotb, there's a new co-host in town.. Jenna Bush Hager, who has hosted the "Today" show's fourth-hour broadcast (aka "Hoda & Jenna") alongside Kotb since 2019, announced Tuesday ...
Casting machines are designated to be billet, bloom, slab or strip casters. Slab casters tend to cast sections that are much wider than thick: Conventional slabs lie in the range 100–1600 mm wide by 180–250 mm thick and up to 12 m long with conventional casting speeds of up to 1.4 m/minute; however slab widths and casting speeds are ...
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