公开(公告)号：US4343557A

公开(公告)日：1982-08-10

申请号：US225271

申请日：1981-01-15

申请人： Robert M. DuRoss ,  Robert J. Stuhler

发明人： Robert M. DuRoss ,  Robert J. Stuhler

IPC分类号： B41J5/28

CPC分类号： B41J5/28

摘要： A typewriter space bar touch control apparatus comprises a bell crank member, mounted on a support frame, which supports the space bar and a lever member which engages the bell crank when the space bar is depressed more than a small initial displacement. The motion of the bell crank is resisted by a helical tension spring and the engagement of the bell crank by the lever causes an operator to sense a sudden increase in resistance to displacement. Position transducers are provided on the support frame to sense the position of the lever member and the initial small displacement of the space bar corresponds to single space operation and larger displacement corresponds to repeat space operation.

摘要翻译： 打字机空格键触摸控制装置包括安装在支撑框架上的铃声曲柄构件，该支撑框架支撑空间杆，当空间杆被压下多于小的初始位移时，杠杆构件接合钟形曲柄。 钟形曲柄的运动受到螺旋拉伸弹簧的抵抗，并且由杠杆引导的钟形曲柄的接合使得操作者感测到位移阻力的突然增加。 位置传感器设置在支撑框架上以感测杆构件的位置，并且空间杆的初始小位移对应于单个空间操作，并且较大的位移对应于重复空间操作。