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  2. Albert Butz - Wikipedia

    en.wikipedia.org/wiki/Albert_Butz

    The damper flapper could control a coal fire furnace by operating the furnace damper from a thermostat. In 1885, Butz decided to patent his heat controller and establish a company to make and sell it. It is believed that Mendenhall urged Butz to patent, manufacture, and sell the damper flapper.

  3. Nozzle and flapper - Wikipedia

    en.wikipedia.org/wiki/Nozzle_and_flapper

    The nozzle and flapper mechanism is a displacement type detector which converts mechanical movement into a pressure signal by covering the opening of a nozzle with a flat plate called the flapper. [1] This restricts fluid flow through the nozzle and generates a pressure signal.

  4. Forced-air gas - Wikipedia

    en.wikipedia.org/wiki/Forced-air_gas

    A small leak of combustion gases into the heated air can be dangerous to the occupants of the heated space, because of possible carbon monoxide build up. [2] A condensing forced-air furnace; flue pipes are plastic, not metal, because of the low waste-gas temperature. Plastic outlet for a condensing natural gas hot air furnace.

  5. The making of the 12-team playoff: Inside the historic ... - AOL

    www.aol.com/sports/making-12-team-playoff-inside...

    The concept has taken its share of criticism for a seeding process that disadvantages teams actually ranked higher. For instance, if the playoff was today, No. 12 Clemson and No. 13 Alabama would ...

  6. Poppet valve - Wikipedia

    en.wikipedia.org/wiki/Poppet_valve

    The word poppet shares etymology with "puppet": it is from the Middle English popet ("youth" or "doll"), from Middle French poupette, which is a diminutive of poupée.The use of the word poppet to describe a valve comes from the same word applied to marionettes, which, like the poppet valve, move bodily in response to remote motion transmitted linearly.

  7. On America's booziest street, surgeon general alcohol warning ...

    www.aol.com/bourbon-street-where-booze-flows...

    Bourbon Street has long been party central, and little changed in the hours after Surgeon General Vivek Murthy on Friday outlined the direct link between alcohol consumption and increased cancer risk.

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