发明名称 Telephone keypad having a dual-switch button
摘要 There is disclosed a telephone keypad apparatus having a dual-switch button in which each of switch contacts can be individually operated depending on the locations at which the buttons are pushed, by mounting two switches for every button in the telephone keypad. In accordance with the present invention, in a telephone keypad in which twelve push buttons are arranged in a grid shape, each of the buttons has two switches for connecting/disconnecting an electrical flow and the buttons are pushed freely right and left. If the left of the button key cap is pushed the left switch is connected, if the right of the button key cap is pushed the right switch is connected and if the middle of the button key cap is pushed both the switches are connected.
申请公布号 US2001003539(A1) 申请公布日期 2001.06.14
申请号 US20000733803 申请日期 2000.12.07
申请人 HAHM JIN HO;PARK JUNG SOO 发明人 HAHM JIN HO;PARK JUNG SOO
分类号 H01H13/705;H01H13/807;H01H23/00;H04M1/23;H04M1/725;(IPC1-7):H04M1/00;H04M3/00 主分类号 H01H13/705
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