| 摘要 |
A keyboard switch actuator in the form of a so-called spacer bar commonly utilized in data processing machines, computers, and electric typewriters, all of which require the actuation of an associated electrical switch. The actuator in this application is a spacer bar normally rectangular in shape and of a size greater than other keys associated with the apparatus. This type of actuator must be constructed so as to maintain longitudinal stability during its operational movement by equally distributing the operating force thereon throughout its longitudinal length so as to prevent tilting, cocking, and oscillatory binding while preserving the operational characteristic of a highly sensitive, light operating force.
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