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公开(公告)号：US5455886A
公开(公告)日：1995-10-03
申请号：US249752
申请日：1994-05-26
CPC分类号： H02P25/14 , H01H9/061 , Y10S388/937
摘要： An electrical implement having a bypass mechanism for controlling a variable speed motor is disclosed. The implement includes a tool, a variable speed electrical motor activatable for driving the tool, a housing supporting the motor and tool, and a control knob for controlling the speed of the motor. The control mechanism includes an on/off switch and a variable speed control circuit. The variable speed control circuit includes a variable resistance rheostat and bypass switch. The control knob controls whether the bypass switch causes current to bypass the rheostat to operate the motor at a predetermined speed or else whether the resistance in the rheostat is variable to change the speed of the motor. The control mechanism includes a cantilevered beam engageable by the control knob to operate the bypass switch. The cantilevered beam is sufficiently flexible to allow for large deflections while placing only limited force across the bypass switch.
摘要翻译： 公开了一种具有用于控制变速电动机的旁路机构的电动工具。 该工具包括可驱动工具的工具，可驱动的可变速电机，支撑电动机和工具的壳体，以及用于控制电动机速度的控制旋钮。 控制机构包括开/关开关和变速控制电路。 变速控制电路包括可变电阻变阻器和旁路开关。 控制旋钮控制旁路开关是否使电流绕过变阻器以以预定速度操作电动机，或者变阻器中的电阻是否可变以改变电动机的速度。 控制机构包括可由控制旋钮接合的悬臂梁，以操作旁路开关。 悬臂梁具有足够的柔性，以允许大的偏转，同时仅将限制的力放置在旁路开关上。
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公开(公告)号：US5477587A
公开(公告)日：1995-12-26
申请号：US175969
申请日：1993-12-30
IPC分类号： A47L5/34
CPC分类号： A47L5/34
摘要： A vacuum power head is provided which has a bare floor feature. A vacuum cleaner head assembly defines a vacuum chamber which contains a power driven rotary brush. Located outside of the vacuum chamber adjacent the rotary brush is a generally U-shaped trailing brush. The trailing brush cooperates with a height adjustment mechanism which is movable between a deep carpet position and a bare floor position. As the height adjustment mechanism of the head assembly is moved toward the bare floor position, the trailing brush is automatically moved to an extended position into engagement with the floor. When the height adjustment mechanism is moved from the bare floor position, a biasing means biases the trailing brush toward a retracted position within the head assembly. An actuator cooperates with the height adjustment mechanism to automatically move the trailing brush between the retracted position and the extended position in response to movement of the height adjustment mechanism.
摘要翻译： 提供具有裸地板特征的真空动力头。 真空吸尘器头部组件限定了包含动力驱动旋转刷的真空室。 位于与旋转刷相邻的真空室外部的是大致U形的后刷。 后刷与高度调节机构配合，高度调节机构可在深层地毯位置和裸地板位置之间移动。 当头组件的高度调节机构移动到裸地板位置时，后刷自动地移动到与地板接合的延伸位置。 当高度调节机构从裸地板位置移动时，偏置装置将后刷朝向头部组件内的缩回位置偏置。 执行器与高度调节机构配合以响应于高度调节机构的运动而自动地将拖尾刷在缩回位置和伸出位置之间移动。
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公开(公告)号：US5317784A
公开(公告)日：1994-06-07
申请号：US930318
申请日：1992-08-10
IPC分类号： A47L5/34
CPC分类号： A47L5/34
摘要： A vacuum power head is provided which has a bare floor feature. A vacuum cleaner head assembly defines a vacuum chamber which contains a power driven rotary brush. Located outside of the vacuum chamber adjacent the rotary brush is a generally U-shaped trailing brush. The trailing brush cooperates with a height adjustment mechanism which is movable between a deep carpet position and a bare floor position. As the height adjustment mechanism of the head assembly is moved toward the bare floor position, the trailing brush is automatically moved to an extended position into engagement with the floor. When the height adjustment mechanism is moved from the bare floor position, a spring biases the trailing brush toward a retracted position within the head assembly. An actuator cooperates with the height adjustment mechanism to automatically move the trailing brush between the retracted position and the extended position in response to movement of the height adjustment mechanism.
摘要翻译： 提供具有裸地板特征的真空动力头。 真空吸尘器头部组件限定了包含动力驱动旋转刷的真空室。 位于与旋转刷相邻的真空室外部的是大致U形的后刷。 后刷与高度调节机构配合，高度调节机构可在深层地毯位置和裸地板位置之间移动。 当头组件的高度调节机构移动到裸地板位置时，后刷自动地移动到与地板接合的延伸位置。 当高度调节机构从裸露的地板位置移动时，弹簧将拖尾刷朝向头部组件内的缩回位置偏置。 执行器与高度调节机构配合以响应于高度调节机构的运动而自动地将拖尾刷在缩回位置和伸出位置之间移动。
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公开(公告)号：US5123317A
公开(公告)日：1992-06-23
申请号：US672175
申请日：1991-03-20
IPC分类号： B23D47/02
CPC分类号： B23D47/025 , Y10T83/2066 , Y10T83/7726 , Y10T83/773
摘要： Support structure for a table saw blade assembly includes a cast aluminum bracket member with a rectangular opening upon which is movably supported the saw blade assembly. The bracket member is formed with a cavity for containing the saw blade and a discharge chute communicating with the cavity. A cover plate encloses the cavity. On the other side of the bracket member there are stiffening ribs for reducing the vibration of the bracket member. The density of the stiffening ribs increases as the distance from the opening decreases.
摘要翻译： 台锯组件的支撑结构包括具有矩形开口的铸铝支架构件，可移动地支撑锯片组件。 托架构件形成有用于容纳锯片的空腔和与空腔连通的排放槽。 盖板封闭空腔。 在支架构件的另一侧上有用于减小支架构件振动的加强肋。 加强肋的密度随着距离开口的距离减小而增加。
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公开(公告)号：US4961245A
公开(公告)日：1990-10-09
申请号：US475392
申请日：1990-02-05
CPC分类号： A47L9/242 , A47L9/0072 , A47L9/0081
摘要： The handle section of a canister vacuum cleaner hose is formed with a noise reducing bleed hole shaped with an inwardly converging wall on the side directed toward the nozzle end of the wand.
摘要翻译： 罐式真空吸尘器软管的把手部分形成有一个减噪排放孔，该泄放孔形成有一个向内聚集的壁，该侧壁指向该棒的喷嘴端。
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公开(公告)号：US4699641A
公开(公告)日：1987-10-13
申请号：US912740
申请日：1986-09-29
申请人： James F. Barnes, Jr.
发明人： James F. Barnes, Jr.
CPC分类号： A47L9/1427 , A47L5/362
摘要： A disposable filter bag accommodating tray insertable through an opening in a vacuum cleaner includes a front wall closing the cleaner opening and features absence of a tray rear wall permitting rearrangement of bag shape during tray withdrawl to minimize bag rupture and easy bag disposal by simply inverting the tray.
摘要翻译： 可以通过真空吸尘器中的开口插入的一次性过滤袋容纳托盘包括一个封闭清洁器开口的前壁，并且特征是不存在托盘后壁，允许在托盘取出期间重新布置袋形状，以使袋破裂最小化并且通过简单地将 托盘。
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