Woodruff key

English

Etymology

Developed by William N. Woodruff of Hartford, Connecticut, in the 1880s, to improve on existing keying practice with more economical keyseat cutting; in the era's technological context, this design offered what is today called a DFM improvement (US patent 368744).

Noun

Woodruff key (plural Woodruff keys)

  2. (engineering) A semicircular key that fits partly into a circular segment keyseat, with the remainder fitting into a longitudinal slot keyway in the mating part.
    Hypernyms: key < part, component
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