公开(公告)号：US3720938A

公开(公告)日：1973-03-13

申请号：US3720938D

申请日：1971-04-19

Applicant: LEMATEX INC

Inventor： LEPOSAVIC W

IPC: B41J5/12 ,  G06F11/08 ,  H01H13/70 ,  H01H13/702 ,  H01H13/703 ,  H01H13/785 ,  H03M11/22 ,  H04Q3/00

CPC classification number: H01H13/785 ,  B41J5/08 ,  B41J5/12 ,  G06F11/085 ,  H01H13/70 ,  H01H13/702 ,  H01H13/703 ,  H01H2201/03 ,  H01H2205/032 ,  H01H2207/012 ,  H01H2209/006 ,  H01H2209/01 ,  H01H2211/016 ,  H01H2217/016 ,  H01H2225/018 ,  H01H2239/026 ,  H03M11/22

Abstract: In a mechanically operated keyboard employing keys each having a multiplicity of electrical switch contacts for providing an encoded electrical signal output corresponding to and uniquely identifying individual key stations, an electrical circuit provides a dummy load across the multiple switch contacts which varies as different keys are actuated in a manner to provide a constant load across the multiple switch contacts. The electrical circuit develops a control signal which can be employed in conjunction with associated circuits to inhibit erroneous data output signals from the keyboard in the event of improper switch closure.

Abstract translation: 在机械操作的键盘中，每个键具有多个电开关触点，用于提供对应于和唯一地识别各个关键站的编码电信号输出，电路在多个开关触点上提供虚拟负载，随着不同键被致动而变化 以便在多个开关触点之间提供恒定负载。 电路产生一个控制信号，该控制信号可以与相关的电路一起使用，以防止在关闭不正确的情况下来自键盘的错误的数据输出信号。

公开(公告)号：US3688066A

公开(公告)日：1972-08-29

申请号：US3688066D

申请日：1970-12-30

Applicant: WILD ROVER CORP

Inventor： ADELSON ALEXANDER M ,  SWARTZ JEROME ,  TOMASULAO WALTER M JR

IPC: H01H1/40 ,  H01H13/12 ,  H01H13/702 ,  H01H13/785 ,  H01H13/52 ,  H01H1/20 ,  H01H1/58

CPC classification number: H01H13/785 ,  H01H1/403 ,  H01H13/12 ,  H01H13/702 ,  H01H2201/026 ,  H01H2201/03 ,  H01H2203/008 ,  H01H2203/02 ,  H01H2203/022 ,  H01H2203/026 ,  H01H2207/01 ,  H01H2221/05 ,  H01H2223/03 ,  H01H2225/006 ,  H01H2225/018 ,  H01H2227/006 ,  H01H2227/018

Abstract: A switch for electrically connecting a first terminal with a plurality of other terminals. A contact movable into and out of electrical engagement with a plurality of base contacts is employed. The movable contact may comprise physically parallel wires affixed to a flexible plate, as well as wires which radiate radially outwardly from a point. The physically parallel wires may be inclined to the base contacts or the base contacts may be of different thicknesses to achieve sequential contacting of the base contacts by the movable contact. The base contacts may be any convenient shape, or in the form of concentric spirals or interspersed parallel segments or adjacent triangular-shaped segments.

Abstract translation: 一种用于将第一端子与多个其它端子电连接的开关。 采用能够与多个基座触点电接合的触点。 活动触点可以包括固定到柔性板上的物理上平行的线以及从点径向向外辐射的线。 物理上平行的电线可以倾斜到基座接触件，或者底座接触件可以具有不同的厚度，以实现基座触头通过可动触点的顺序接触。 基部触点可以是任何方便的形状，或者以同心螺旋形或散布的平行段或相邻的三角形段的形式。