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The most common version replaces the arm linkages with two independent parallelogram linkages, with a pair of light tension springs on each half of the arm. The arm has been employed in other devices where it is necessary to hold an object stationary at a convenient point in space, notably the copy holder for typists and in some applications ...
Anglepoise model 1227 from 1935. A balanced-arm lamp, sometimes called a floating arm lamp, is a lamp with an adjustable folding arm which is constructed such that the force due to gravity is always counteracted by springs, regardless of the position of the arms of the lamp.
By the 1920s, battery holders used twin metal clips (like fuse holders) to hold the battery in place while making electrical contact. Patent no. 1439429 was granted in Dec. 1922 for an assembly with two spring arm clips, a small switch, and a lamp assembly on the end of connected wires.
The first car registered to drive on the road with full LED rear lights was Land Rover's LCV 2/3 concept car in the 1990s. [143] At the time, the only light function that was difficult to reproduce was the reverse light, as white LEDs did not yet exist.
NOMA was a company best known for making Christmas lights.It was once the largest manufacturer of holiday lighting in the world. [citation needed] As of 2021, the rights to the brand in Canada and the United States are owned by Canadian Tire, which sells NOMA-branded products through its namesake stores in Canada, and through an e-commerce website in the United States.
High-intensity discharge lamps (HID lamps) are a type of electrical gas-discharge lamp which produces light by means of an electric arc between tungsten electrodes housed inside a translucent or transparent fused quartz or fused alumina arc tube. [1] This tube is filled with noble gas and often also contains suitable metal or metal salts.
A Tizio desk lamp. Tizio is a desk lamp created by Richard Sapper for Artemide in 1972. [1] It was selected for the Compasso d'Oro industrial design award in 1979. An item of it is part of the collections of the Metropolitan Museum of Art [2] and of the Museum of Modern Art.
The BMW i3 all-electric car with at least 22 kWh battery capacity offers an optional gasoline-powered range extender APU. [21] The range extender is the same 647 cc two-cylinder gasoline engine used in the BMW C650 GT scooter with a 9 L (2.0 imp gal; 2.4 US gal) fuel tank.
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