发明授权
US4029915A Miniaturized calculator keyboard switch assembly having universally
pivoted key actuators
失效
小型化的计算器键盘开关组件具有通用的关键致动器
- 专利标题： Miniaturized calculator keyboard switch assembly having universally pivoted key actuators
- 专利标题（中）： 小型化的计算器键盘开关组件具有通用的关键致动器
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申请号： US637264申请日： 1975-12-03
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公开(公告)号： US4029915A公开(公告)日： 1977-06-14
- 发明人: Shin Ojima
- 申请人： Shin Ojima
- 申请人地址： JA Yao
- 专利权人： Hoshidenkoseizo Kabushiki Kaisha
- 当前专利权人： Hoshidenkoseizo Kabushiki Kaisha
- 当前专利权人地址： JA Yao
- 优先权： JA49-143295 19741212
- 主分类号： G06F3/02
- IPC分类号： G06F3/02 ; B43K29/093 ; G06F3/023 ; G06F15/02 ; H01H13/712 ; H01H13/84 ; H01H25/04 ; H01H13/70 ; G06F7/38 ; H01H25/00
摘要：
A 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.
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