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Black & Decker was tasked with the job, and developed a computer program to optimize the design of the drill's motor and ensure minimal power consumption. That computer program led to the development of a cordless miniature vacuum cleaner. [3] The Mod 4 series was introduced in 1974 but was generally not successful in the marketplace.
Score the top-rated handheld vacuum for 50% off! ... ‘Perfect for spiffing up any area’: This Black & Decker Dustbuster is on sale for $30. Rebecca Carhart. April 19, 2023 at 9:44 AM.
Occupancy sensor types include: PIR sensors, which work on heat difference detection, measuring infrared radiation.Inside the device is a pyroelectric sensor which can detect the sudden presence of objects (such as humans) who radiate a temperature different from the temperature of the background, such as the room temperature of a wall.
In 1930, the company name was changed to Ray-O-Vac, an allusion to the then-new technology of vacuum tubes and electron rays. In 1933, the company patented the first wearable vacuum tube hearing aid. [8] During World War II, Rayovac supplied the United States military with nearly 500 million batteries.
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The Alabama Crimson Tide were on the outside looking into the College Football Playoff bracket on Sunday after Clemson received the No. 12 seed and SMU got an at-large bid.. Alabama hoped the ...