B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
197/119, 340/182
B41J 5/08 (2006.01) B41J 5/10 (2006.01) B41J 5/28 (2006.01) B41J 23/32 (2006.01) H01H 13/70 (2006.01) H01H 36/00 (2006.01)
Patent
CA 1105113
Abstract of the Disclosure A keyboard, actuatable with the aid of the tips of the fingers of at least one hand is disclosed. The keyboard comprises a support frame, at least one row of keys, each of which can be moved out of an initial inopera- tive position by the tips of the index finger, middle finger, ring finger and little finger, respectively, without or with a hand rest for the ball of the thumb or wrist of the hand. On this rest the hand can be continuously support- ed in a rest position during actuation of the keyboard. The keys in one row constitute a guide key row in which the keys for each hand to be used for operating the keyboard are arranged on a curve, which corresponds to the natural disposition of the finger-tips when the fingers are, without being tensioned, in a slightly curved and spread, but relaxed posture. Each key of the guide key row has a top face and comprises, at the end thereof opposite the top face, supporting means adapted for preventing downward depression of the key while permitting lateral shifting of the key toward at least one predetermined operational position, thereby permitting random vertical pressure to be exercised by a finger tip on the top face of a key of the guide key row without causing operational displacement of the latter key.
283964
Fetherstonhaugh & Co.
Idf Company Ltd.
LandOfFree
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