Carl V. Novak - Pell Lake WI Ronald R. Browne - Des Plaines IL
Assignee:
Motorola Inc. - Schaumburg IL
International Classification:
H01H 312
US Classification:
200 5A
Abstract:
A keypad assembly is described that includes a novel elastomeric membrane keypad (120) sandwiched between a housing (110) and a circuit board 130. Keypad (120) is comprised of a sheet (122) and a plurality of keys (124) protruding therefrom. Keys (124) have carbon pads (220) on the bottom for producing electrical signal continuity between corresponding pairs of contacts on circuit board (130). Then sheet (122) further includes ridges (310) at the periphery of its top surface and surrounding each key (124). When keypad (120) is compressed between housing (110) and circuit board (130), ridges (310) produce a high compression seal around each key (124), thereby improving the tactile response thereof. Sheet (122) of keypad (120) also includes cavities (210) for light sources (410) on circuit board (130). The light from light sources (410) is conducted by sheet (122) throughout keypad (120) for brightly and evenly illuminating keys (124 ).
An apparatus made of a single piece of resilient material has notches (101) with narrow openings, on the same side, on each end. An indentation (103) opposite each notch (101) creates a narrow, flexible segment (106) on each end of the apparatus. A printed circuit board inserted in one of the notches (101) will cause an end section (107) adjacent the notch (101) to flex, thereby allowing the board to enter into the narrow notch opening. Once the board has been inserted, the resilient material of the apparatus will cause the flexed end section (107) to attempt to return to its original shape. This will force the end section (107) up against the board thereby holding the board in place within the notch (101). This simple design allows the apparatus to be manufactured relatively inexpensively.
Zdravko M. Zakman - Schaumburg IL Carl V. Novak - Pell Lake WI
Assignee:
Motorola, Inc. - Schaumburg IL
International Classification:
H04B 138
US Classification:
455 89
Abstract:
A detachable battery pack with a built-in broadband antenna is disclosed. Since the antenna is wholly contained within the battery housing, it is protected from damage and is detachable from the transceiver when the battery is detached. A transmission line structure formed between the battery and the transceiver is used to create an open circuit near the antenna feed point.
Carl Novak (1967-1968), jack pavlike (1939-1943), mary larson (1982-1986), Mike Heffley (1964-1968), JOSEPH HOLMIN (1983-1987), monica cisar (1974-1978)