Data input system
Patent 4211497 Issued on July 8, 1980. Estimated Expiration Date: 
March 13, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 13, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2040248 3600528 3847263 3929216 InventorApplicationNo. 05/886102 filed on 03/13/1978US Classes:400/486, Key-board arranged according to character location200/5A, With independent operators400/479Via electrical component (e.g., switch, stylus, etc.) in or with key-boardExaminersPrimary: Sewell, Paul T.Attorney, Agent or FirmInternational ClassesB41J 5/00 (20060101)B41J 5/10 (20060101) G06F 3/023 (20060101) AbstractThis disclosure relates to data input system keyboards that are designed in accordance with human engineering principles for use in conjunction with a specific data input activity. Each keyboard has a plurality of keys adapted for actuation in response to minimum movement of the fingers of an operator and each having a substantially smooth upper surface to facilitate sliding movement of the fingers of the operator between the keys of the keyboard. The keys of each keyboard are arranged such that the most often used keys are situated in the most readily accessible locations with respect to the fingers of the operator, and with keys which are frequently utilized in sequence. That is, the keys that comprise digraphs & trigrams as well as keys carrying individual words or characters used frequently in sequence are positioned adjacent one another. The keys may be arranged along arcuate paths corresponding to the natural movement of the fingers, hands, and arms of the operator.Other References
Field of SearchDelay by storage of next character to be imprintedFOR OPERATION BY HANDICAPPED USER Including means generating a signal for type selecting or other typing function Via electrical component (e.g., switch, stylus, etc.) in or with key-board Capacitance-responsive switch Electromagnetic-responsive switch | |
