出典:Wiktionary
出典:『Wiktionary』 (2025/06/18 15:03 UTC 版)
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).
Woodruff key (plural Woodruff keys)