Keyboard integrated pointing device
October 13, 2014. 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 ReferencesMiniaturized calculator keyboard switch assembly having universally pivoted key actuators Jumper touch sensor current switching device Pressure sensitive switch Pressure-sensitive resistors Switch apparatus Cursor control Electronic pressure sensitive transducer apparatus Joystick switch Joystick operated multiple position switch Electrical thick-film, free-standing, self-supporting structure, and method of its manufacture, particularly for sensors used with internal combustion engines InventorsAssigneeApplicationNo. 322956 filed on 10/13/1994US Classes:345/174, Including impedance detection200/5R, Multiple switch338/99, Surfaces pressed together (e.g., compressible type)345/168Including keyboardExaminersPrimary: Hjerpe, RichardAssistant: Saras, Steven Attorney, Agent or FirmForeign Patent References
International ClassesG06F 003/14H01C 010/10 H01H 009/26 AbstractA keyswitch-integrated pointing assembly in which a plurality of substantially planar force sensing elements are disposed on a planar surface adjacent a keyswitch on a keyboard. The keyswitch includes a plunger which extends downwardly from a key cap for actuating a switch at the lower end of vertical key cap travel. The key cap engages an indexing surface when fully depressed which transmits force applied to the key cap to the force sensing elements. The force sensing elements are sandwiched between a pair of opposing plates thereby biasing the elements into a substantially linear operating region when no force is applied to the key cap.Other References
Field of SearchDISPLAY PERIPHERAL INTERFACE INPUT DEVICECursor mark position control device Including keyboard Having programmable function key Mechanical control (e.g., rotatable knob, slider) With independent operators Universally pivoted handle Multiple switch Compressible elastomer Specific dome shape Surfaces pressed together (e.g., compressible type) Deformable With audible or tactile indicator Pressure sensitive actuation | |
