Boots – shoes – and leggings
Patent
1990-10-31
1993-05-18
Clark, David L.
Boots, shoes, and leggings
341 28, 400484, 400486, 400489, 381 44, G06F 3023
Patent
active
052126382
ABSTRACT:
The invention is an alphabetic keyboard arrangement for convenient and fast typing--for instructional, research or data entry purposes--the phonetic data or phonetic transcriptions of Mandarin Chinese in the pinyin romanization. Its distinguishing features are the following: (1) the keys bearing the letters A, I, O and U are so placed that each is usually struck by a different finger; (2) the keys bearing the letters A, I, O, U, N and G, as these letters stand for the most frequently appearing syllabic final speech sounds, are placed in the row of keys on which the typist's fingers usually rest; (3) the keys bearing the letters A, E, I, U and H are so placed that each is usually struck by the index finger or middle finger of either hand; (4) the keys bearing the syllabic tone quality symbols are in the central are of the keyboard.
REFERENCES:
patent: 3945482 (1976-03-01), Einbinder
patent: 4455615 (1984-06-01), Tanimoto et al.
Olson DW and Jasinski L. E., "Keyboard Efficiency," Byte, Feb. 1986, pp. 241-244.
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