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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 ]
A handcuff cover is a plastic or metal cover that can be placed over a pair of handcuffs. It consists of a hinged, box-like assembly locked over the handcuff chain, wristlets and keyholes. [1] The first handcuff cover was invented by J. D. Cullip and K. E. Stefansen [2] and patented in 1973. [3]
However, the device can still be defeated by inserting two objects simultaneously. Despite its weaknesses, the tamper-resistant receptacle is superior to protective plastic outlet caps which must be individually installed on each receptacle (and are a choking hazard when removed), and to sliding covers that children easily learn to defeat. [37]
Industrial outlets may have weatherproof covers, waterproofing sleeves, or may be interlocked with a switch to prevent accidental disconnection of an energized plug. Some types of connectors are approved for hazardous areas such as coal mines or petrochemical plants, where flammable gas may be present.
To paint the screen, extensive effort was required to first disassemble the video panels. Each one comprised eight smaller tiles, each of which was covered by a black "shader", which Lipson described as a "louvered plastic piece" that shielded the LED panel from sunlight to help with contrast. The shaders were removed and replaced with custom ...
Terrace Hill, also known as Hubbell Mansion, Benjamin F. Allen House or the Iowa Governor's Mansion, is the official residence of the governor of Iowa, United States. Located at 2300 Grand Avenue in Des Moines , it is an example of Second Empire architecture.