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1. 发明授权

US5282397A Engine balancing system having at least one pivoting counterbalance weight 失效
标题翻译：具有至少一个枢转平衡重的发动机平衡系统
公开(公告)号：US5282397A
公开(公告)日：1994-02-01
申请号：US855059
申请日：1992-03-19
申请人： Joseph R. Harkness , Patrick J. Bruener , William R. Frank
发明人： Joseph R. Harkness , Patrick J. Bruener , William R. Frank
IPC分类号： F02B63/04 , F02B75/16 , F16F15/26 , F16C3/04
CPC分类号： F16F15/261 , F02B75/16 , F02B63/04 , Y10T74/18208 , Y10T74/2157 , Y10T74/2183
摘要： The engine balancing system preferably has two pivoting counterbalance weights connected to eccentric journals on the crankshaft via their respective link arms. The use of the two pivoting weights and the particular geometrical relationships between the balancing system components enable the balancing system to substantially mimic and oppose the non-sinusoidal piston forces. Several methods of balancing the non-sinusoidal piston forces are disclosed. In a first method, the centers of gravity of the respective counterbalance weights are moved at non-sinusoidal angular accelerations. These angular accelerations are greater when the piston is near its Top Dead Center position than when the piston is near its Bottom Dead Center position to yield higher balancing forces when the piston is near Top Dead Center. In a second method, the centers of gravity move through arcs which are substantially parallel to the piston axis when the piston is near its Top Dead Center position, and move in directions less parallel to the piston axis when the piston is near its Bottom Dead Center position. The movement of the centers of gravity parallel to but in the opposite direction from the moving piston when the piston is near Top Dead Center results in greater balancing forces when the piston is near Top Dead Center. The invention also includes a combined method of balancing the non-sinusoidal piston forces. In this combined method, the angular accelerations of the centers of gravity vary as in the first method, and the directions of movement of the centers of gravity vary as in the second method.
摘要翻译：发动机平衡系统优选地具有通过其相应的连杆臂连接到曲轴上的偏心轴颈的两个枢转平衡重块。使用两个枢转重物和平衡系统组件之间的特定几何关系使得平衡系统能够基本上模拟和对抗非正弦活塞力。公开了平衡非正弦活塞力的几种方法。在第一种方法中，各个平衡重重心的重心以非正弦角加速度移动。当活塞接近上死点位置时，这些角加速度大于当活塞接近底死中心位置时产生更大的平衡力，当活塞靠近上止点时。在第二种方法中，当活塞靠近其上死点位置时，重心移动通过弧线，该弧线基本上平行于活塞轴线，并且当活塞靠近其底部死点时，其运动方向与活塞轴线平行位置。当活塞靠近上死点时，重心平行于活动活塞的相反方向的运动导致当活塞靠近上止点时更大的平衡力。本发明还包括平衡非正弦活塞力的组合方法。在这种组合方法中，重心的角加速度与第一种方法一样变化，并且重心的运动方向如第二种方法那样变化。

2. 发明授权

US4819593A Pivoting balancer system 失效
标题翻译：平衡机系统
公开(公告)号：US4819593A
公开(公告)日：1989-04-11
申请号：US187440
申请日：1988-04-28
申请人： Patrick J. Bruener , Joseph R. Harkness , Norbert M. Vogl , Glen C. Eifert
发明人： Patrick J. Bruener , Joseph R. Harkness , Norbert M. Vogl , Glen C. Eifert
IPC分类号： F02B75/02 , F02B75/16 , F16F15/26 , F16F15/28
CPC分类号： F16F15/261 , F02B75/16 , F02B2075/025 , F02B2075/027 , F05C2201/021 , Y10T74/2183 , Y10T74/2184
摘要： A balance system for an internal combustion engine or the like includes a counterbalance weight pivotally mounted to the crankcase and driven in a reciprocating manner by a link assembly connecting the weight to an eccentric on the crankshaft. The pivoting weight not only counterbalances the piston acceleration and deceleration forces but also cancels the torsional forces created by the weight as it pivotally moves through an arc in response to piston movement. This is accomplished by locating the center of gravity of the balance weight between the piston bore centerline and the stationary pivot of the balance weight itself. This location for the center of gravity causes a torque to be generated by a force couple created by the piston inertial force vector, the balance weight interial force vector, and the distance between them. This torque counteracts the torque generated by angular acceleration of the balance weight itself, to thereby substantially eliminate all torsional vibrations.
摘要翻译：用于内燃机等的平衡系统包括枢转地安装到曲轴箱并且通过将重物连接到曲轴上的偏心轮的连杆组件以往复方式驱动的平衡重。枢转重量不仅抵消活塞加速和减速力的平衡，而且还抵消了由于重量响应于活塞运动而枢轴运动通过电弧而产生的扭力。这通过将平衡重的重心定位在活塞孔中心线和平衡重本身的固定枢轴之间来实现。用于重心的位置导致由活塞惯性力矢量，平衡重中间力矢量和它们之间的距离产生的力对产生扭矩。该扭矩抵消由平衡重本身的角加速度产生的扭矩，从而基本上消除所有的扭转振动。

3. 发明授权

US5606851A Battery-powered lawn cutting system 失效
公开(公告)号：US5606851A
公开(公告)日：1997-03-04
申请号：US543054
申请日：1995-10-13
申请人： Patrick J. Bruener , Paul A. Tharman , John A. Fiorenza, II , Joseph L. Pfaff , Richard A. Dykstra , William H. Reitman
发明人： Patrick J. Bruener , Paul A. Tharman , John A. Fiorenza, II , Joseph L. Pfaff , Richard A. Dykstra , William H. Reitman
IPC分类号： A01D34/68 , A01D34/74 , A01D34/81 , A01D34/82 , A01D69/02 , A01D34/67 , A01D34/78
CPC分类号： A01D34/6806 , A01D34/74 , A01D34/78 , A01D34/81 , A01D34/82 , A01D34/828 , A01D2034/6843 , A01D2101/00 , Y10S56/18
摘要： The improved battery-powered lawnmower includes a safety key that is automatically removed when the removable battery is removed, while at the same time blocking the battery recharger receptacle. The lawnmower also includes a control circuit that shuts off the lawnmower upon the occurrence of one or more of several predetermined conditions, including low battery voltage, the encountering of heavy grass for a period of 3 seconds or more, and high motor current that may occur when the cutting blade is jammed. The cutting blade is designed to move through any debris accumulated between the blade ends and the housing sidewall without sacrificing the lift for needed cutting and mulching. The invention also includes a unique height adjustment assembly for adjusting the height of the chassis, a handle attachment that allows the handle to be positively tightened to the lawnmower chassis, and a telescoping groove for the battery's quick connect/disconnect terminals.

4. 发明授权

US5619845A Battery-powered lawn cutting system 失效
标题翻译：电池供电的草坪切割系统
公开(公告)号：US5619845A
公开(公告)日：1997-04-15
申请号：US567897
申请日：1995-12-06
申请人： Patrick J. Bruener , Paul A. Tharman , John A. Fiorenza, II , Joseph L. Pfaff , Richard A. Dykstra , William H. Reitman
发明人： Patrick J. Bruener , Paul A. Tharman , John A. Fiorenza, II , Joseph L. Pfaff , Richard A. Dykstra , William H. Reitman
IPC分类号： A01D34/68 , A01D34/74 , A01D34/81 , A01D34/82 , A01D69/02 , A01D34/78
CPC分类号： A01D34/6806 , A01D34/74 , A01D34/78 , A01D34/81 , A01D34/82 , A01D34/828 , A01D2034/6843 , A01D2101/00 , Y10S56/18
摘要： The improved battery-powered lawnmower includes a safety key that is automatically removed when the removable battery is removed, while at the same time blocking the battery recharger receptacle. The lawnmower also includes a control circuit that shuts off the lawnmower upon the occurrence of one or more of several predetermined conditions, including low battery voltage, the encountering of heavy grass for a period of 3 seconds or more, and high motor current that may occur when the cutting blade is jammed. The cutting blade is designed to move through any debris accumulated between the blade ends and the housing sidewall without sacrificing the lift for needed cutting and mulching. The invention also includes a unique height adjustment assembly for adjusting the height of the chassis, a handle attachment that allows the handle to be positively tightened to the lawnmower chassis, and a telescoping groove for the battery's quick connect/disconnect terminals.
摘要翻译：改进的电池供电割草机包括一个安全钥匙，当可拆卸电池被移除时，安全钥匙被自动移除，同时阻塞电池充电器插座。割草机还包括一个控制电路，其在几个预定条件中的一个或多个发生时关闭割草机，包括低电池电压，3次或更长时间内遇到重草，以及可能发生的高电动机电流当切割刀片卡住时。切割刀片设计成移动通过叶片端部和壳体侧壁之间积聚的任何碎屑，而不会牺牲电梯以进行所需的切割和覆盖。本发明还包括用于调节底盘高度的唯一的高度调节组件，允许手柄被主动地紧固到割草机底盘的手柄附件以及用于电池快速连接/断开端子的伸缩槽。

5. 发明授权

US4055898A Means for facilitating checking and replenishment of crankcase oil in a small engine 失效
标题翻译：用于促进小型发动机中曲轴箱油的检查和补充的方法
公开(公告)号：US4055898A
公开(公告)日：1977-11-01
申请号：US686146
申请日：1976-05-13
申请人： Daniel E. Braun , Patrick J. Bruener
发明人： Daniel E. Braun , Patrick J. Bruener
IPC分类号： G01F23/04
CPC分类号： G01F23/04
摘要： A small gasoline engine with a relatively inaccessible crankcase oil fill port is equipped with an elongated funnel member having its bottom sealingly secured in that port. A removable cap for the funnel member comprises a suction chamber having a transparent side wall and the interior of which is communicated with a depending tube that has its bottom end at the prescribed minimum oil level. With adequate crankcase oil, depression and release of a downwardly displaceable, upwardly biased top wall of the suction chamber draws oil into it to be visible through its transparent wall. The interior of the transparent wall is cleaned of residual oil by a wiper moving in unison with the displaceable wall.
摘要翻译：具有相对不可接近的曲轴箱油填充口的小型汽油发动机配备有细长的漏斗构件，其底部密封地固定在该端口中。用于漏斗构件的可拆卸盖包括具有透明侧壁的吸入室，并且其内部与其底端处于规定的最低油位的悬垂管连通。使用足够的曲轴箱油，吸入室的向下可移动的，向上偏置的顶壁的凹陷和释放将油吸入其中以通过其透明壁可见。通过与可移动壁同步移动的擦拭器清洁透明壁的内部残留的油。

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