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A single shaft runs below the rollers running the length of the conveyor. On the shaft are a series of spools, one spool for each roller. An elastic polyurethane o-ring belt runs from a spool on the powered shaft to each roller. When the shaft is powered, the o-ring belt acts as a chain between the spool and the roller making the roller rotate.
Industrial applications include forklift drive and load wheels, grocery and industrial carts, [11] and roller coaster wheels. Modern roller blading and skateboarding became economical only with the introduction of tough, abrasion-resistant polyurethane parts, helping to usher in the popularity of what had once been an obscure 1960s craze.
An artist's impression of a full-scale Bazin roller liner. The principle behind the design was similar to that of the slightly later hydrofoil; by avoiding as much hull contact with the water as possible, the amount of drag could be reduced and – in theory – the vessel could be made to move much faster for a given amount of power.
Pages in category "1970s sailboat type designs" The following 200 pages are in this category, out of approximately 468 total. This list may not reflect recent changes .
The three main elements of a typical planetary roller screw are the screw shaft, the nut, and the planetary roller. The screw, a shaft with a multi-start V-shaped thread, provides a helical raceway for multiple rollers radially arrayed around the screw and encapsulated by a threaded nut. The thread of the screw is typically identical to the ...
Rotor ship E-Ship 1. A rotor ship is a type of ship designed to use the Magnus effect for propulsion.The ship is propelled, at least in part, by large powered vertical rotors, sometimes known as rotor sails.
Pages in category "Sailboat type designs by Robert Tucker" The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes .
The Heritage-class cutter, also known as the Offshore Patrol Cutter and the Maritime Security Cutter, Medium, is a cutter class of the United States Coast Guard (USCG), developed as part of the Integrated Deepwater System Program and built by Eastern Shipbuilding [4] and Austal USA. [5]
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