Miniaturized calculator keyboard switch assembly having universally pivoted key actuators
Patent 4029915 Issued on June 14, 1977. Estimated Expiration Date: 
June 14, 1994. 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.
June 14, 1994. 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 ReferencesInventorAssigneeApplicationNo. 05/637264 filed on 12/03/1975US Classes:708/145, Plural function key200/5A, With independent operators200/517, Including additional actuator200/6A, Universally pivoted handle361/680, Including keyboard support361/681, Including display support400/479, Via electrical component (e.g., switch, stylus, etc.) in or with key-board400/485, Key-board having multiple-character, multiple-movement keys400/491.2, Including spring supporting key cap or key stem401/195, COMBINED708/105, Combined with diverse art device708/107Writing instrument (e.g., pen)ExaminersPrimary: Scott, J. R.Attorney, Agent or FirmForeign Application Priority Data1974-12-12 JAAbstractA portable electronic calculator comprises a calculator body which supports a keyboard consisting of a single elongated row of keys each of which is adapted to be tilted in any one of four directions by the finger tip of a user to input a selected one of four different information signals from said key to a calculator circuit located within the body. The results of the calculation are supplied to an indicator circuit in the body for viewing by the user through an elongated indicator opening which is disposed in alignment with the row of keys. | |
