Tappet Tap"pet, n. (Mach.) A lever or projection moved by some other piece, as a cam, or intended to tap or touch something else, with a view to produce change or regulate motion. --G. Francis. [1913 Webster]

{Tappet motion}, a valve motion worked by tappets from a reciprocating part, without an eccentric or cam, -- used in steam pumps, etc. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • tappet — ► NOUN ▪ a lever or projecting part on a machine which intermittently makes contact with a cam or other part so as to give or receive motion. ORIGIN from TAP(Cf. ↑tapper) …   English terms dictionary

  • tappet — [tap′it] n. [ TAP1 + ET] a sliding rod in an engine or machine moved by intermittent contact with a cam and used to move another part, as a valve …   English World dictionary

  • Tappet — [ Ford I4 DOHC engine, showing the tappet just under the cam lobe] A tappet in mechanical engineering is a projection which imparts a linear motion to some other component within an assembly. Properly speaking, a tappet is only that part of a… …   Wikipedia

  • tappet — [1] The screw used to adjust the clearance between the valve stem and the lifter or the rocker arm. [2] The valve lifter itself. See barrel tappet bucket tappet cam follower flat tappet hydraulic tappet …   Dictionary of automotive terms

  • tappet — noun Etymology: irregular from 3tap Date: 1745 a lever or projection moved by some other piece (as a cam) or intended to tap or touch something else to cause a particular motion …   New Collegiate Dictionary

  • tappet — /tap it/, n. Mach. a sliding rod, intermittently struck by a cam, for moving another part, as a valve. [1735 45; TAP1 + ET] * * * …   Universalium

  • tappet — noun A lever or projection which is moved by some other piece, as a cam, or intended to tap or touch something else, in order to produce change or regulate motion. Syn: follower, lifter …   Wiktionary

  • tappet — tap·pet || tæpɪt n. projection on a moving part designed to touch and move or be moved by some other part at certain intervals (Machinery) …   English contemporary dictionary

  • tappet — [ tapɪt] noun a moving part in a machine which transmits motion in a straight line between a cam and another participle Origin C18: appar. an irregular dimin. of tap2 …   English new terms dictionary

  • tappet — noun (C) technical an engine part that moves up and down and makes another part of the engine move, open, close etc …   Longman dictionary of contemporary English

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