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    • 7. 发明授权
    • Electrically powered log splitter
    • 电动对数分配器
    • US4423759A
    • 1984-01-03
    • US316885
    • 1981-10-30
    • Richard E. Seeger
    • Richard E. Seeger
    • B27L7/00
    • B27L7/00
    • An electrically powered log splitter has a frame carrying a pair of mutually spaced fixed splitting components with a carriage mounted movable splitting component movable in opposite directions therebetween. A reversible electric drive motor is mechanically connected to the carriage to propel the carriage in opposite directions. A control switch is electrically connected between a power source and the drive motor. The switch has a first closed setting at which the drive motor is energized to move the carriage and its movable splitting component in one direction toward one of the fixed splitting components, a second closed setting at which the drive motor is energized to move the carriage and its movable splitting component in the opposite direction towards the other of the fixed splitting components, and a third normally open setting at which the drive motor is deenergized to halt movement of the carriage. An operating handle is provided to manually adjust the switch from its normally open third setting to either of its first or second closed settings. A shuttle rod is formed integrally with the operating handle and is engageable by the carriage to adjust the switch from either of its first or second closed settings to its normally open third setting in order to limit carriage movement in either direction. With minor modifications, essentially the same arrangement can be employed to operate a single-acting log splitter wherein the carriage mounted movable splitting component coacts with a single fixed splitting component.
    • 电动对数分配器具有承载一对相互间隔开的固定分离部件的框架,其具有可沿相反方向移动的滑架安装的可动分离部件。 可逆电驱动马达机械地连接到托架以沿相反的方向推动托架。 控制开关电连接在电源和驱动电机之间。 开关具有第一闭合设置,驱动马达被激励以使滑架及其可动分离部件沿一个方向朝向固定分离部件之一移动,第二闭合设置,驱动马达通电以移动滑架, 其可动分离部件朝向固定分离部件中的另一个的相反方向,以及第三常开设置,驱动电动机在该第三常开设置处断电以停止滑架的运动。 提供操作手柄以将开关从其常开的第三设置手动地调节到其第一或第二闭合设置中的任一个。 梭杆与操作手柄一体地形成,并且可通过托架接合,以将开关从其第一或第二闭合设置中的任一个调整到其常开的第三设定,以便限制托架在任一方向的运动。 通过轻微的修改,可以采用基本上相同的布置来操作单作用对数分配器,其中滑架安装的可动分离部件与单个固定分离部件共同作用。
    • 8. 发明授权
    • Keyboard with concave and convex domes
    • 键盘与凹凸圆顶
    • US4128744A
    • 1978-12-05
    • US771016
    • 1977-02-22
    • Richard E. Seeger
    • Richard E. Seeger
    • H01H13/702H01H13/70
    • H01H13/702H01H2207/01H01H2221/004H01H2223/034H01H2229/026H01H2229/032
    • Keyboard device having a top flexible plastic contactor sheet with a first circuit pattern thereon, said first pattern comprising contactors and circuit lines, a bottom sheet having a second circuit pattern comprising contacts and circuit lines, an insulator spacer having openings in register with said contactors, said sheet having formed therein one or a plurality of protrusions or domes which support a portion of the first circuit pattern, and means for continuously urging the one or plurality of protrusions or domes supporting a portion of said first circuit pattern against a portion of said second circuit pattern.
    • 键盘装置具有其上具有第一电路图案的顶部柔性塑料接触器片,所述第一图案包括接触器和电路线,具有包括触点和电路线的第二电路图案的底部片,具有与所述接触器对齐的开口的绝缘体间隔件, 所述片材在其中形成有支撑所述第一电路图案的一部分的一个或多个突起或圆顶,以及用于连续地将支撑所述第一电路图案的一部分的所述一个或多个突起或圆顶抵抗所述第二电路图案的一部分的装置 电路图案。