发明授权
- 专利标题: Finger operated switching apparatus
- 专利标题(中): 手指开关装置
-
申请号: US915513申请日: 1986-10-06
-
公开(公告)号: US4761522A公开(公告)日: 1988-08-02
- 发明人: Donald E. Allen
- 申请人: Donald E. Allen
- 专利权人: Allen Donald E
- 当前专利权人: Allen Donald E
- 主分类号: B41J5/28
- IPC分类号: B41J5/28 ; H01H13/84 ; H01H25/00 ; H01H25/04 ; B41J5/08 ; H01H13/70
摘要:
A keyboard includes a plurality of keys thereon, each of which is capable of three different switching actions for entry of data or commands into a word processor, typewriter, computer or the like. Each key includes a first inclined surface for generating a first switching action responsive to finger contraction, a second inclined surface for generating a second switching action responsive to finger extension, and a horizontal surface for actuating a third switching action responsive to finger depression. Each key is connected to a respective switch. Each switch includes a carriage operating horizontally against spring-loaded horizontal plugs. The carriage houses a spring-loaded vertical stem attached to the respective key.
公开/授权文献
- US6042046A Reeling and unreeling apparatus, system and method 公开/授权日:2000-03-28