公开(公告)号：US6154007A

公开(公告)日：2000-11-28

申请号：US457812

申请日：1999-12-09

申请人： David M. Shaver ,  Carl W. Gifford

发明人： David M. Shaver ,  Carl W. Gifford

IPC分类号： H02J7/00 ,  H01M10/44 ,  H01M10/46

CPC分类号： H02J7/0054

摘要： A battery charging system enables rapid recharging of a working battery without immediate access to ac power and without the need for current limit and/or overvoltage protection. The battery charging system makes use of a charging battery having a number of cells that is greater than the number of cells in the working battery. The charging battery produces a charging current that is proportional to the difference in the number of cells in each battery. In this manner, the battery recharging system is capable of rapidly recharging the working battery. The number of cells in the charging battery is selected, however, such that the series voltage of the charging battery cells is less than or equal to the maximum rated voltage of the working battery. Thus, the voltage of the charging battery is greater than the operating voltage of the working battery but less than or equal to the maximum voltage rating of the working battery. As a result, the charging battery is generally incapable of overcharging the working battery, and therefore does not require current limit and/or overvoltage protection circuitry.

摘要翻译： 电池充电系统能够快速地对工作电池进行充电，而不需要立即访问交流电，并且不需要电流限制和/或过电压保护。 电池充电系统利用具有大于工作电池中的电池数量的多个电池的充电电池。 充电电池产生与每个电池中的电池数量差异成比例的充电电流。 以这种方式，电池充电系统能够对工作电池进行快速充电。 然而，选择充电电池中的电池数量，使得充电电池单元的串联电压小于或等于工作电池的最大额定电压。 因此，充电电池的电压大于工作电池的工作电压，但小于或等于工作电池的最大额定电压。 结果，充电电池通常不能对工作电池过度充电，因此不需要限流和/或过电压保护电路。

公开(公告)号：US6018231A

公开(公告)日：2000-01-25

申请号：US8881

申请日：1998-01-20

申请人： David M. Shaver ,  Carl W. Gifford

发明人： David M. Shaver ,  Carl W. Gifford

IPC分类号： H02J7/00 ,  H01M10/46

CPC分类号： H02J7/0054

摘要： A battery charging system enables rapid recharging of a working battery without immediate access to ac power and without the need for current limit and/or overvoltage protection. The battery charging system makes use of a charging battery having a number of cells that is greater than the number of cells in the working battery. The charging battery produces a charging current that is proportional to the difference in the number of cells in each battery. In this manner, the battery recharging system is capable of rapidly recharging the working battery. The number of cells in the charging battery is selected, however, such that the series voltage of the charging battery cells is less than or equal to the maximum rated voltage of the working battery. Thus, the voltage of the charging battery is greater than the operating voltage of the working battery but less than or equal to the maximum voltage rating of the working battery. As a result, the charging battery is generally incapable of overcharging the working battery, and therefore does not require current limit and/or overvoltage protection circuitry.

摘要翻译： 电池充电系统能够快速地对工作电池进行充电，而不需要立即访问交流电，并且不需要电流限制和/或过电压保护。 电池充电系统利用具有大于工作电池中的电池数量的多个电池的充电电池。 充电电池产生与每个电池中的电池数量差异成比例的充电电流。 以这种方式，电池充电系统能够对工作电池进行快速充电。 然而，选择充电电池中的电池数量，使得充电电池单元的串联电压小于或等于工作电池的最大额定电压。 因此，充电电池的电压大于工作电池的工作电压，但小于或等于工作电池的最大额定电压。 结果，充电电池通常不能对工作电池过度充电，因此不需要限流和/或过电压保护电路。

公开(公告)号：US06934995B2

公开(公告)日：2005-08-30

申请号：US10175516

申请日：2002-06-19

申请人： David K. Wheeler ,  David M. Shaver

发明人： David K. Wheeler ,  David M. Shaver

IPC分类号： A47L5/24 ,  A47L9/28 ,  A47L11/34 ,  A47L11/30

CPC分类号： A47L11/4086 ,  A47L5/24 ,  A47L9/2836 ,  A47L9/2842 ,  A47L9/2857 ,  A47L11/34 ,  A47L11/4088

摘要： A hand held steam vacuum is provided that is operated by way of a single switch device. The vacuum is generally comprised of a vacuum fan, a water pump, a heating element, and a fluid supply tank in fluid communication with a fluid discharge outlet. In operation, the vacuum fan is operable to suck debris into a collection bowl residing in the vacuum. In addition, the water pump is operable to drive fluid from the fluid supply tank via fluid transport tubes to the fluid discharge outlet, and the heating element is operable to heat the fluid prior to it being discharged from the fluid discharge outlet. A single switch device is configured to control operation of the vacuum fan, water pump and heating element.

摘要翻译： 提供手持式蒸汽真空，其通过单个开关装置操作。 真空通常由真空风扇，水泵，加热元件和与流体排出口流体连通的流体供应罐组成。 在操作中，真空风扇可操作以将碎屑吸入位于真空中的收集碗中。 此外，水泵可操作以通过流体输送管将流体从流体供应罐驱动到流体排放出口，并且加热元件可操作以在流体从流体排出口排出之前加热流体。 单个开关装置被配置为控制真空风扇，水泵和加热元件的操作。

公开(公告)号：US06926090B2

公开(公告)日：2005-08-09

申请号：US10428514

申请日：2003-05-02

申请人： Oleksiy P. Sergyeyenko ,  Jacob R. Prosper ,  David M. Shaver

发明人： Oleksiy P. Sergyeyenko ,  Jacob R. Prosper ,  David M. Shaver

IPC分类号： A01G3/06 ,  A01D15/00

CPC分类号： A01G3/062

摘要： A housing assembly for a power edger that includes a housing, a door and a latching system. The door is coupled to the housing and movable between an open position and a closed position. The latching system includes a latch member that is coupled to one of the housing and the door and a ramp that is coupled to the other one of the housing and the door. Contact between the ramp and the latch member when the door is being closed against the housing causes the latch member to move to an unlatched condition so as to automatically align the latch member to a latch aperture. This permits the door to be fully closed without the need to manually operate the latch member.

摘要翻译： 一种用于动力磨床的壳体组件，其包括壳体，门和闩锁系统。 门联接到壳体并且可以在打开位置和关闭位置之间移动。 闩锁系统包括联接到壳体和门中的一个的闩锁构件和联接到壳体和门中的另一个的斜坡。 当门关闭壳体时，斜坡和闩锁构件之间的接触使得闩锁构件移动到解锁状态，以便将闩锁构件自动对准闩锁孔。 这允许门完全关闭，而不需要手动操作闩锁构件。

公开(公告)号：US06574831B2

公开(公告)日：2003-06-10

申请号：US09886963

申请日：2001-06-21

申请人： Murray D. Hunter ,  Oleksiy P. Sergyeyenko ,  Corey D. MacTavish ,  David M. Shaver ,  Jacob R. Prosper

发明人： Murray D. Hunter ,  Oleksiy P. Sergyeyenko ,  Corey D. MacTavish ,  David M. Shaver ,  Jacob R. Prosper

IPC分类号： A47L932

CPC分类号： A47L9/325 ,  A47L5/24 ,  A47L5/28

摘要： A latching mechanism for an upright vacuum cleaner which allows an upright handle to be quickly and easily detached and reattached to an independently usable powerhead of the vacuum cleaner. The latching mechanism includes a pair of attachment portions formed at a lower end portion of the upright handle which cooperate with a pair of recesses formed in a housing of the powerhead. A foot actuated release lever allows the user to detach the upright handle only when the handle is in an upright orientation. The design of the attachment portions and the recess, in connection with the release lever, prevent the handle from inadvertently being installed backwards on the powerhead, as well as from being inadvertently detached from the powerhead without first depressing the release lever.

公开(公告)号：US3976952A

公开(公告)日：1976-08-24

申请号：US498157

申请日：1974-08-16

申请人： David M. Shaver

发明人： David M. Shaver

IPC分类号： G11C11/06 ,  H03K5/02 ,  H03F3/45

CPC分类号： G11C11/06042 ,  H03K5/02

摘要： A sense amplifier having three transistor stages. A balanced differential input stage with high noise immunity to capacitively coupled noise. A second threshold stage is provided with protection against an output being caused by a permanent potential on the input, false trigger protection circuitry, and protection against supply voltage and other minor variations. A differential output stage increases noise immunity of the amplifier output and protects against a short circuit in the output.

摘要翻译： 具有三个晶体管级的读出放大器。 平衡差分输入级，具有高抗电容耦合噪声的抗噪声能力。 第二阈值级具有防止由输入上的永久电位，假触发保护电路以及防止电源电压和其他微小变化引起的输出的保护。 差分输出级增加放大器输出的抗噪声能力，防止输出端短路。

公开(公告)号：US20110127947A1

公开(公告)日：2011-06-02

申请号：US12941470

申请日：2010-11-08

申请人： Murray D. Hunter ,  David M. Shaver

发明人： Murray D. Hunter ,  David M. Shaver

IPC分类号： H02J7/00

CPC分类号： H02J7/0031 ,  H02J7/0047 ,  H02J7/0055

摘要： A battery boost apparatus is described. The battery boost apparatus monitors that amount of voltage in the vehicle battery and the current flowing to the vehicle battery to determine an existence of a fault condition. If a fault condition exists, a vehicle battery is cutoff from the boost battery and the charge of the boost battery is maintained until the fault condition is remedied.

摘要翻译： 描述了电池升高装置。 电池升压装置监视车辆电池中的电压和流向车辆电池的电流，以确定是否存在故障状况。 如果存在故障条件，车辆电池从升压电池断开，并且保持升压电池的电量，直到故障状况得到补救。

公开(公告)号：US06612376B2

公开(公告)日：2003-09-02

申请号：US09981053

申请日：2001-10-16

申请人： Oleksiy P. Sergyeyenko ,  Jacob R. Prosper ,  David M. Shaver

发明人： Oleksiy P. Sergyeyenko ,  Jacob R. Prosper ,  David M. Shaver

IPC分类号： A01D1500

CPC分类号： A01G3/062

摘要： A housing assembly for a power edger that includes a housing and a door that is coupled to the housing and movable between an open position and a closed position. When positioned in the closed position, labyrinth seal members that are formed onto the housing and the door engage one another to form a labyrinth seal that inhibits dirt and debris from being expelled from the housing assembly. The housing assembly also includes a guard for shrouding a rotating blade. The guard includes a confronting portion having a leading end and a trailing end. The confronting portion is defined by an increasing radius relative to the rotary axis of the blade.

摘要翻译： 一种用于动力磨床的壳体组件，其包括壳体和门，所述壳体和门联接到壳体并且可在打开位置和关闭位置之间移动。 当位于关闭位置时，形成在壳体和门上的迷宫式密封构件彼此接合以形成抑制灰尘和碎屑从壳体组件排出的迷宫式密封件。 壳体组件还包括用于遮盖旋转叶片的防护罩。 护罩包括具有前端和后端的相对部分。 面对部分由相对于叶片的旋转轴线的增加的半径限定。

公开(公告)号：US3939308A

公开(公告)日：1976-02-17

申请号：US510082

申请日：1974-09-27

申请人： David M. Shaver ,  John A. Gauthier

发明人： David M. Shaver ,  John A. Gauthier

IPC分类号： H04Q5/24 ,  H04M15/36

CPC分类号： H04Q5/24

摘要： A side of line detector with a single operational amplifier with adjustable output. The amplifier input is protected from positive and negative voltage spikes by diodes. Two transistors are coupled to the amplifier to set a comparator voltage reference which allows the rejection of leakage and noise. Test points are provided in the circuit to facilitate testing particular subcircuits and to allow the initial adjustment of the detector.

摘要翻译： 具有可调输出的单个运算放大器的线路检测器侧。 放大器输入通过二极管防止正和负电压尖峰。 两个晶体管耦合到放大器以设置比较器电压基准，其允许抑制泄漏和噪声。 在电路中提供了测试点，以方便测试特定的子电路并允许检测器的初始调整。

公开(公告)号：US08429885B2

公开(公告)日：2013-04-30

申请号：US12975499

申请日：2010-12-22

申请人： Richard P. Rosa ,  David M. Shaver ,  Patrick Marcil ,  Joshua D. Eaton ,  Mark Slobodian ,  James D. Marshall ,  Michael A. Milligan ,  Patrick Wade Mooney

发明人： Richard P. Rosa ,  David M. Shaver ,  Patrick Marcil ,  Joshua D. Eaton ,  Mark Slobodian ,  James D. Marshall ,  Michael A. Milligan ,  Patrick Wade Mooney

IPC分类号： A01D69/00

CPC分类号： A01D34/69 ,  A01D34/006 ,  A01D34/78 ,  A01D34/81 ,  A01D42/005 ,  A01D69/02 ,  B60L1/003 ,  B60L3/0023 ,  B60L3/0061 ,  B60L11/1805 ,  B60L11/1822 ,  B60L11/1864 ,  B60L11/1877 ,  B60L2200/40 ,  B60L2240/12 ,  B60L2240/36 ,  B60L2250/24 ,  H01M2/1072 ,  Y02T10/7005 ,  Y02T10/7061 ,  Y02T10/7072 ,  Y02T90/124 ,  Y02T90/14

摘要： A cordless mower includes a deck, a rechargeable battery, a blade for cutting grass, a blade motor and a drive motor. The deck is supported by front and rear wheels and has a top side, a bottom side, a front end and a rear end. The rechargeable battery is supported on the deck. The blade is on the bottom side of the deck and is coupled with a blade motor. The drive motor is connected to the rear wheels for driving said rear wheels to move the mower. The drive motor is located in a chamber at the rear of the mower adjacent the rear wheels. The chamber has an opening therein to allow air to flow through.

摘要翻译： 无绳割草机包括甲板，可再充电电池，用于切割草的刀片，刀片电机和驱动电机。 甲板由前轮和后轮支撑，并具有顶侧，底侧，前端和后端。 充电电池支撑在甲板上。 叶片位于甲板的底部，并与叶片马达相连。 驱动马达连接到后轮，用于驱动所述后轮以移动割草机。 驱动马达位于与后轮相邻的割草机后部的腔室中。 腔室中有一个开口，以允许空气流过。