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In toothed gearing, the part of the arc of contact wherein the face of the driving wheel touches the flank of the driven wheel.
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Related Terms |
POINT CONTACT
A contact between a specially prepared semiconductor surface and a metal point, usually maintained by mechanical periphery.
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PODBIELNIAK EXTRACTOR
A solventextraction device in which centrifugal action enhances liquid-liquid contact and increases resultant separation efficiency.
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PLATE TOWER
A distillation tower along the internal height of which is a series of transverse plates (bubble-cap or sieve) to force intimate contact between downward flowing liquid and upward flowing vapor.
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PLASTER SHOOTING
A surface blasting method used when no rock drill is necessary or one is not available; consists of placing a charge of gelignite, primed with safety fuse and detonator, in close contact with the rock or boulder and covering it completely with stiff damp clay.
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PILOTED IGNITION
The accidental initiation of combustion by means of contact of gaseous material with an external high-energy source, such as a flame, spark, electrical arc, or glowing wire.
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PHONOGRAPH
[ENG ACOUS] An instrument for recording or reproducing acoustical signals, such as voice or music, by transmission of vibrations from or to a stylus that is in contact with a groove in a rotating disk.
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PERFORATED-PLATE EXTRACTOR
A liquid-liquid extraction vessel in which perforated plates are used to bring about contact between the two or more liquid phases.
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PERFORATED-PLATE COLUMN
Distillation column in which vapor-liquid contact is provided by perforated plates instead of bubble-cap trays.
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NATURAL-DRAFT COOLING TOWER
A cooling tower that depends upon natural convection of air flowing upward and in contact with the water to be cooled.
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MUDCAP
A quantity of wet mud, wet earth, or sand used to cover a charge of dynamite or other high explosive fired in contact with the surface of a rock in mud blasting.
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