back draft


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back draft

[′bak ‚draft]
(metallurgy)
A reversed taper given to a casting model or pattern to prevent its withdrawal from the mold.
References in periodicals archive ?
12, 2011 /PRNewswire/ -- Every year, the hard-working heroes of the Beverly Hills Fire Department get treated to a swanky night at the Back Draft Ball.
Neither series nor parallel units have sealed panels and the parallel unit has a back draft damper designed to stop leakage of cold air to the plenum when the fan is not running.
However, as he got closer, a back draft of smoke, fire, and extinguishing agent blew back in his face, forcing him to back up.
But the delegations stopped short of working out the specifics of a verification scheme during their three-day talks in Beijing, and decided to take back draft proposals to their respective capitals with a promise to meet again soon.
Localized fume extractor devices include down draft, back draft, and snorkel exhaust vents, which are used in histology/gross dissection and special chemistry.
She was obviously too busy rummaging through rails of skirts, tops and vests to notice the, erm, back draft.
Bruce shot the buck with a Browning Back Draft bow set at 72 pounds.
My favourite book of all time is Confessions Of A Luxury Liner by Timothy Lea and the best movie is Back Draft where they get up close and personal with some of the fiercest fires you'll ever see.
Holes are often elliptical with back draft to prevent sprue hangup.
He was going to go in but if he'd have opened the door, the back draft might have killed them both.
Opening the front door gave the fire a giant gulp of oxygen, which created a massive back draft, and blew out the side window on the first floor.