Circular tactile keypad
September 26, 2015. 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 3754495 Telephone mouthpiece keyboard Hand held data entry unit Single hand keyboard arrays providing alphanumeric capabilities from twelve keys Medication reminder Computer keyboard with flexible dome switch layer Abbreviated and enhanced dialing apparatus and methods particularly adapted for cellular or other types of telephone systems Circular tactile keypad Membrane switch having a rotary motion detection function Tactile key tops InventorApplicationNo. 534245 filed on 09/26/1995US Classes:341/22, Including keyboard or keypad341/20, BODILY ACTUATED CODE GENERATOR341/21, For handicapped user400/489Key-board including keys grouped to facilitate positioning of typist's fingersExaminersPrimary: Mullen, ThomasAssistant: Mannava, Ashok Attorney, Agent or FirmInternational ClassH03K 017/94AbstractA digital keypad for a controller of an electrical device includes keys which are circularly arranged in a clock face pattern. The keys are marked with numeric indicia in sequential numeric order from 1 to 12, each switch being radially spaced 30-degrees apart. Some of the numbered keys may be replaced with other symbols as desired. Tactile key-finding ridges emanate from the center of the circular key pattern, extending in the direction of each key. The keypad may be releaseably affixed to a trigger grip stand, comprising a planar base and a vertical handle having a trigger switch which when depressed transmits preselected signals to the electrical device.Field of SearchBODILY ACTUATED CODE GENERATORFor handicapped user Including keyboard or keypad Transmitter for remote control signal Communication or control for the handicapped All video game accessories Including keyboard Portable (i.e., handheld, calculator, remote controller) KEY-BOARD OR KEY LEVER-ACTUATING MECHANISM Key-board including keys grouped to facilitate positioning of typist's fingers Work support (e.g, sheet or card holddown or guide, sheet-size platen, etc.) | |
