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公开(公告)号：US4048787A
公开(公告)日：1977-09-20
申请号：US701619
申请日：1976-07-01
CPC分类号： A01D34/6812 , F02B63/02 , F02B75/007 , F16D67/02 , A01D2101/00
摘要： A combination clutch and brake for rotary power mowers of the type wherein the blade is fixed to a spindle driven by the engine through an endless belt type drive transmission. A medially pivoted lever has an idler roll at one end to engage and tension the belt and thereby activate the drive transmission when the lever is rocked in one direction and a claw at its other end which, upon movement of the lever in the opposite direction, engages the notched periphery of a brake disc encircling the blade spindle and frictionally engaged with a companion disc that is fixed with respect to the spindle. The lever is spring-biased in the direction to engage the brake disc and thereby stop blade rotation concomitantly with deactivation the drive transmission whenever a deadman control on the mower handle is released.
摘要翻译： 用于这种类型的旋转动力割草机的组合式离合器和制动器，其中叶片通过环形带式驱动变速器固定到由发动机驱动的主轴。 中间转动的杠杆在一端具有一个惰轮，用于接合和张紧皮带，从而当杠杆沿一个方向摇动时激活驱动传动装置，并且在其另一端处具有爪，当杠杆沿相反方向运动时， 接合围绕刀片主轴的制动盘的切口周边，并与相对于主轴固定的伴随盘摩擦接合。 杠杆沿着与制动盘接合的方向被弹簧偏置，从而当释放割草机手柄上的死机控制时，随着停止驱动传动的同时停止叶片旋转。
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公开(公告)号：US4003190A
公开(公告)日：1977-01-18
申请号：US602815
申请日：1975-08-07
CPC分类号： A01D34/6806 , A01D2034/6843 , A01D2101/00 , Y10T477/87
摘要： In a walk-behind rotary lawn mower powered by a gasoline engine, two pushbutton-type switches are so connected in the engine ignition circuit that at least one must be actuated for the engine to run. One switch comprises a dead-man control actuated by gripping the mower guide handle. The other is actuated by a treadle so located on the mower deck as to be depressed by one foot of a person who has his other foot in a safe position and who is operating the engine rope starter in a natural, convenient manner. Depression of the treadle also actuates a brake that prevents the mower from rolling.
摘要翻译： 在由汽油发动机驱动的步行式旋转割草机中，两个按钮式开关如此连接在发动机点火电路中，至少必须启动发动机运行。 一个开关包括通过抓住割草机引导手柄致动的死人控制。 另一个由位于割草机甲板上的脚踏板致动，以便被其另一只脚保持在安全位置并且以自然方便的方式操作发动机绳起动器的人的一只脚压下。 脚踏板的凹陷也致动制动器，防止割草机滚动。
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公开(公告)号：US5234038A
公开(公告)日：1993-08-10
申请号：US767243
申请日：1991-09-27
摘要： A pour spout for pouring a fluid, such as fuel, by gravity from a container to a tank. The spout includes a conduit having one end connected to the fuel container and having a second end to be positioned within the neck of the tank. A sleeve is mounted for sliding movement within the conduit and the outer end of the sleeve carries a closure which closes off the discharge end of the conduit. A vent tube is disposed within the conduit and has an inlet end which is adapted to communicate with the fuel tank when the closure is in the open position. A check valve is mounted within the vent tube and permits the flow of fuel vapor and air from the tank through the tube to the container, but prevents flow of fuel in the opposite direction. An annular collar is mounted on the conduit and with the collar engaged with the neck of the fuel tank, a downward force applied through the container on the sleeve will open the closure to admit fuel through the conduit to the tank. The collar is adjustably mounted along the length of the fluid conduit to accommodate tank necks of different configurations. The closure carries a rotatable tab which encloses the inlet of the vent tube when the closure is in the closed position to prevent foreign material from entering the vent tube, but permits limited vapor and air flow to eliminate a buildup of pressure or vacuum in the fuel container. By rotating the tab, the tab can be brought into sealing engagement with the inlet of the vent tube to prevent vapor or liquid flow therethrough.
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公开(公告)号：US5088273A
公开(公告)日：1992-02-18
申请号：US633251
申请日：1990-12-21
CPC分类号： A01D34/824 , A01D34/6818 , F02N3/02 , A01D2101/00
摘要： A lawnmower handle assembly is disclosed for manually-starting lawnmowers in which the starter rope handle is retained by the bale lever. The rope handle is preferably retained by an aperture in the bale lever, with the starter rope passing through the aperture. The handle assembly enables the starter rope handle to be more accessible to the operator during starting, and decreases the time required for the lever to engage an ignition or blade stopping mechanism when the lever is released.
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5.发明授权Means for facilitating checking and replenishment of crankcase oil in a small engine 失效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
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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公开(公告)号：US4453507A
公开(公告)日：1984-06-12
申请号：US324776
申请日：1981-11-25
IPC分类号： F01L13/08
CPC分类号： F01L13/085
摘要： A centrifugally responsive compression release mechanism for an internal combustion engine. The release mechanism includes a yoke pivotally mounted to the camshaft and having an auxiliary cam member that is movable between an operative valve-unseating position and an inoperative position. A counterweight is associated with the legs of the yoke and causes the center of mass of the yoke to be offset from the plane containing the pivot axis. With this configuration, the yoke is biased by gravity at low rotational speeds to position the cam member in the operative valve-unseating position to thereby release compression in the combustion chamber of the engine. At engine running speeds, centrifugal force overcomes the gravitational force to pivot the yoke and the attached cam member to the inoperative position so that normal operation of the engine is not impaired.
摘要翻译： 一种用于内燃机的离心式响应的压缩释放机构。 释放机构包括枢转地安装到凸轮轴并具有辅助凸轮构件的轭，该辅助凸轮构件可在操作的阀门释放位置和非操作位置之间移动。 配重与轭的腿相关联，并且使轭的质心偏离包含枢轴的平面。 利用这种构造，轭被以低转速的重力偏置，以将凸轮部件定位在操作的阀门释放位置，从而在发动机的燃烧室中释放压力。 在发动机运转速度下，离心力克服重力使轭和附接的凸轮构件枢转到不工作位置，从而不会损害发动机的正常运行。
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