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The system was dubbed Port-El, a play on the words “portal” “elevator”, and his last name. It was patented in 1961. [ 1 ] It did not come to full fruition at the time, as the mechanical relays that controlled elevators were not well suited for complex algorithms, and the patent expired in 1977. [ 2 ]
A home lift not to be confused with a home elevator is a type of lift specifically designed for private homes, where the design takes into consideration the following four factors: 1. Compact design in view of the limitations of space in a private residence, 2. Usage of the lift restricted primarily to the residents of the private homes, 3.
Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.
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Designers need to account for the projected traffic volumes. For example, a single-width escalator traveling at about 0.5 metres per second (1 + 1 ⁄ 2 ft/s) can move about 2000 people per hour, assuming that passengers ride single file. The carrying capacity of an escalator system is typically matched to the expected peak traffic demand.
Inclined elevator design is based on the same basic technology as conventional, vertical elevator. [6] In general standard elevator equipment can be adapted for systems with an inclines up 10° from vertical, while an incline with more than 20° from vertical will require some additional adaptation. [1]