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  2. Garage door opener - Wikipedia

    en.wikipedia.org/wiki/Garage_door_opener

    The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana. [1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.

  3. Rolling code - Wikipedia

    en.wikipedia.org/wiki/Rolling_code

    Remote controls send a digital code word to the receiver. If the receiver determines the codeword is acceptable, then the receiver will actuate the relay, unlock the door, or open the barrier. Simple remote control systems use a fixed code word; the code word that opens the gate today will also open the gate tomorrow.

  4. List of Rolls-Royce Merlin variants - Wikipedia

    en.wikipedia.org/wiki/List_of_Rolls-Royce_Merlin...

    Two-speed, two-stage supercharger and S.U. injection carburettor giving a maximum boost of +25 psi (172 kPa). On the Hornet the Merlin 130 was fitted in the starboard nacelle: the Merlin 131, fitted in the port nacelle, was converted to a "reverse" or left-hand tractor engine using an additional idler gear in the reduction gear casing. [26]

  5. Merlin (console) - Wikipedia

    en.wikipedia.org/wiki/Merlin_(console)

    Merlin (also known as Merlin The Electronic Wizard, stylized as MERLIN) is a handheld electronic game first made by Parker Brothers in 1978. The game was invented by former NASA employee Bob Doyle, his wife Holly, and brother-in-law Wendl Thomis. [ 4 ]

  6. Supermarine Spitfire (early Merlin-powered variants) - Wikipedia

    en.wikipedia.org/wiki/Supermarine_Spitfire...

    The Merlin XII was cooled by a 70% to 30% water glycol mix, rather than pure glycol used for earlier Merlin versions. [ 66 ] In early 1940 Spitfire Is of 54 and 66 Squadrons were fitted with Rotol manufactured wide-bladed propellers of 10 ft 9 in (3.27 m) diameter, which were recognisable by a bigger, more rounded spinner: the decision was made ...

  7. Rolls-Royce Merlin - Wikipedia

    en.wikipedia.org/wiki/Rolls-Royce_Merlin

    The Rolls-Royce Merlin is a British liquid-cooled V-12 piston aero engine of 27-litre (1,650 cu in) capacity. Rolls-Royce designed the engine and first ran it in 1933 as a private venture.

  8. Merlin - Wikipedia

    en.wikipedia.org/wiki/Merlin

    [13] [14] In his Myrdhinn, ou l'Enchanteur Merlin (1862), La Villemarqué derived Marz[h]in, which he considered the original form of Merlin's name, from the Breton word marz (wonder) to mean 'wonder man'. [15] Clas Myrddin or Merlin's Enclosure is an early name for Great Britain as stated in the third series of Welsh Triads. [16]

  9. Swearingen Merlin - Wikipedia

    en.wikipedia.org/wiki/Swearingen_Merlin

    The SA26 Merlin is a pressurized Excalibur fitted with a different Lycoming TIGO-540 6-cylinder geared piston engine. The TIGO 540 was used despite the fact that one of the reasons the IO-720 was used in the Excalibur was that the Queen Air series' IGSO-480 and IGSO-540 engines from the same manufacturer were so troublesome.