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Hubbell Incorporated was founded as a proprietorship in 1888 by Harvey Hubbell II. Born in Connecticut in 1857, he was a U.S. inventor, entrepreneur, and industrialist. Hubbell's best-known inventions are the U.S. electrical plug [3] and the pull-chain light socket. [4]
Hubbell's first design was a socket which screwed into a lampholder (like the early lampholder plugs), but with a separable plug with pins (U.S. patent 774,250) or blades (US patent 774251). The 1906 Hubbell catalog [4] shows the blade plug with a flush mounting socket for use in wall or floor. Other manufacturers adopted the Hubbell pattern ...
The 1971 Austin Insulator product catalog listed 21 standard types with power ratings from 0.7 to 7.0 kVA weighing 70–340 pounds (32–154 kg), with the larger units only available on special order. [21] Despite Austin having been issued a large number of patents, there are no known patents on this particular invention.
Harvey Hubbell II (born 1857, Connecticut) was an American inventor, entrepreneur, and industrialist. His best-known inventions are the U.S. electrical plug [ 1 ] and the pull-chain light socket . [ 2 ]
The normal technical term (in both British and International English) for an AC power socket is socket-outlet, [4] but in non-technical common use a number of other terms are used. In British English the general term is socket, but there are numerous common alternatives, including power point, [5] plug socket, [6] wall socket, [7] and wall plug ...
The addition is a 3 ⁄ 16-inch (4.8 mm) diameter round or U-shaped ground pin, 1 ⁄ 8 in (3.2 mm) longer than the power blades (so the device is grounded before the power is connected) and located from them by 1 ⁄ 4 in (6.4 mm) edge-to-edge or 15 ⁄ 32 in (11.9 mm) center-to-center.
Hubbell (surname) Hubbell Center, the museum, library, and archive of the Hubbell family in North America; Hubbell Incorporated, an electric and electronic products manufacturer; Hubbell connector, see "Twist-Lock connector"
Eaton hybrid power systems: mounted between the UltraShift automated manual transmission and clutch is an electric motor/generator, connected to a power inverter using lithium-ion batteries, controlled with an electronic control module. The system has a fail-safe that reverts to conventional engine-powered operation should some fault occur. [8]