公开(公告)号：US4747134A

公开(公告)日：1988-05-24

申请号：US57327

申请日：1987-06-04

申请人： Eddie L. Holland ,  David E. Jekot

发明人： Eddie L. Holland ,  David E. Jekot

IPC分类号： H01H9/04 ,  H01H19/62 ,  H04M1/08 ,  H04M17/02 ,  H01H21/08 ,  H01H21/82

CPC分类号： H04M17/026 ,  H01H19/62 ,  H04M1/08 ,  H01H9/04

摘要： A telephone hook switch assembly has a housing which defines first and second cavities and a shaft rotatably mounted in the housing. A hook switch lever is mounted on the shaft and is rotatable therewith in the first housing cavity. A switch assembly having snap-action switches is positioned in the second housing cavity. The snap-action switches open and close in a predetermined sequence in response to rotation of the hook switch lever. The assembly provides superior isolation of the electrical contacts from environmental contaminants and is more rugged than conventional leaf spring and program card arrangements.

摘要翻译： 电话钩开关组件具有限定第一和第二空腔的壳体和可旋转地安装在壳体中的轴。 挂钩开关杆安装在轴上并且可在第一壳体空腔中随其旋转。 具有快动开关的开关组件定位在第二壳体腔中。 卡扣动作响应于钩开关杆的旋转以预定顺序打开和关闭。 该组件提供了电气接触与环境污染物的卓越隔离，并且比常规板簧和程序卡布置更坚固。

公开(公告)号：US4862499A

公开(公告)日：1989-08-29

申请号：US93045

申请日：1987-09-04

申请人： David E. Jekot ,  Harold W. Jordan

发明人： David E. Jekot ,  Harold W. Jordan

IPC分类号： H01H13/702 ,  H04M1/23

CPC分类号： H01H13/702 ,  H04M1/23 ,  H01H2213/01 ,  H01H2215/008 ,  H01H2223/002 ,  H01H2231/022 ,  H01H2233/022 ,  H01H2239/038

摘要： A telephone keypad assembly including a one-piece deformable membrane for sealing the keypad assembly from the environment. The deformable membrane has an upper surface for mating with keypad pushbuttons and a keypad pushbutton housing unit, and a lower surface including a contact actuator for making contact with electrical switch contacts. The membrane forms raised areas or domes which bias the keypad pushbuttons and biasingly resists movement of the contact actuator toward the electrical contacts. The keypad assembly including switch contacts is protected from moisture, dust and other corrosive elements by the seal formed between the housing unit and the deformable membrane.

摘要翻译： 一种电话键盘组件，包括用于将键盘组件与环境密封的单件可变形膜。 可变形膜具有用于与键盘按钮配合的上表面和键盘按钮壳体单元，以及包括用于与电开关触点接触的触点致动器的下表面。 膜形成凸起区域或圆顶，偏置键盘按钮并且偏置地抵抗接触致动器朝向电触点的移动。 包括开关触点的键盘组件通过形成在壳体单元和可变形膜之间的密封件而被防止湿气，灰尘和其它腐蚀性元件。