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公开(公告)号：US06564760B2
公开(公告)日：2003-05-20
申请号：US09957272
申请日：2001-09-20
IPC分类号： F02B3304
摘要： A compact low emission, two-cycle, crankcase scavenged, spark ignited internal combustion engine with stratified scavenging is provided. The two-cycle engine including a cylinder block containing scavenging ports and a fresh air supply port. Said scavenging ports are formed as a blind pocket inside the cylinder walls. A piston having passages for alternatively communicating the transfer ports with the fresh air intake port and with a crankcase chamber in unison with the engine. By this method, the air trapped into the piston chambers creates an air mass, which is used as a buffer to evacuate the residual gases out of the cylinder chamber. This stratified “air head” substantially reduces raw fuel losses through the exhaust port, therefore, HC emissions are greatly reduced and fuel economy is enhanced.
摘要翻译： 提供了一种紧凑型低排放，双循环曲轴箱清扫，火花点火内燃机，分层扫气。 双冲程发动机包括一个包含清理口和一个新鲜空气供应口的气缸体。 所述扫气口形成为气缸壁内的盲袋。 活塞具有用于交替地将输送口与新鲜进气口连通并且与发动机一致的曲轴箱的通道。 通过这种方法，被捕获到活塞室中的空气产生空气质量，其被用作将残留气体排出气缸室的缓冲器。 这种分层的“空气头”大大减少了通过排气口的原燃料损失，因此，大大降低了HC排放，提高了燃油经济性。
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2.发明授权Low emission two-cycle internal combustion engine for powering a portable tool 失效用于为便携式工具供电的低排放二循环内燃机公开(公告)号：US06216649B1
公开(公告)日：2001-04-17
申请号：US09314765
申请日：1999-05-19
IPC分类号： F02B3322
CPC分类号： F02B33/22 , F02B33/04 , F02B63/02 , F02B2075/025 , F02F7/0019
摘要： A low emission two-cycle internal combustion engine for powering a portable tool is provided. The two-cycle engine comprising a cylinder block containing two parallel cylinders adjacent to each other receiving two reciprocating pistons. One cylinder in cooperation with the power piston, operates as the power source. The second cylinder in cooperation with the slave piston, operates as a volumetric fuel pumping system. Both cylinders centerlines lying in a plane perpendicular to a crankshaft. The cylinder block is disposed over an engine block containing the crankshaft and a crankcase. The two pistons are connected by a connecting rod to a common crankpin. The kinematics of this engine leads to a considerable advance of the slave piston in relation to the power piston, resulting in a significant higher pressure within the pump cylinder than into the power cylinder during the compression period. The combustion gasses are evacuated by pure air compressed into the crankcase through the scavenging ports. After the exhaust port closes, a rich fuel/air mixture is progressively introduced into the power piston by the pumping action of the slave piston. This fuel/air mixture is introduced into the combustion chamber of the power cylinder through a fuel transfer port communicating the upper portion of both cylinders and through a unidirectional valve located at the end of such transfer port. Because the injection occurs after the piston has closed off the exhaust port, virtually no unburned fuel escapes, therefore, HC emissions are greatly reduced and fuel economy is enhanced.
摘要翻译： 提供了一种用于为便携式工具供电的低排放二循环内燃机。 该双冲程发动机包括一个气缸体，该气缸体包含彼此相邻的两个平行气缸，容纳两个往复活塞。 与动力活塞合作的一个气缸作为动力源。 与从动活塞协作的第二个气缸作为体积燃料泵送系统运行。 两个气缸中心线位于垂直于曲轴的平面中。 气缸体设置在包含曲轴和曲轴箱的发动机缸体上。 两个活塞通过连杆连接到公共曲柄销。 该发动机的运动学导致从动活塞相对于动力活塞的相当大的进步，导致在泵气缸内的压力显着高于压缩期间的动力缸。 燃烧气体被通过清扫口压缩到曲轴箱中的纯空气排空。 在排气口关闭后，通过从动活塞的泵送作用，将丰富的燃料/空气混合物逐渐引入动力活塞。 这种燃料/空气混合物通过连通两个气缸的上部并且通过位于这种输送口端部的单向阀的燃料输送口被引入动力缸的燃烧室。 因为喷射发生在活塞关闭排气口后，几乎没有未燃烧的燃料逸出，因此，HC排放量大大降低，燃油经济性得到提高。
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公开(公告)号：US10386029B1
公开(公告)日：2019-08-20
申请号：US16117497
申请日：2018-08-30
IPC分类号： F21S9/03 , F21V31/00 , F21Y115/10 , F21W131/401
摘要： The object of the present invention is a solar powered submerged lighting system that is self-contained, waterproof and provides underwater lighting during the nighttime. The system contains a solar cell array for charging a battery and electronic elements to control the transmission of the battery power towards a set of LED lights in the absence of solar light. The LED lights contain light projectors to improve the light penetration through the water body.
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公开(公告)号：US20170321441A1
公开(公告)日：2017-11-09
申请号：US15147165
申请日：2016-05-05
IPC分类号： E04H4/12 , B01D29/23 , C02F1/00 , C02F103/42 , E04H4/16
CPC分类号： E04H4/1636 , C02F1/001 , C02F2103/42 , C02F2201/006
摘要： The present invention consist of an improved and very compact hand held pool debris removal system using a hydrodynamic water circulation device capable of producing significant water flow through a conduit. Such water flow is then used to lift and convey debris from bodies of water such as fountains, ponds and swimming pools. The device operates by creating a high speed water jet curtain using an external source of energy by means of pressurized water, which impinges on an steady body of water transforming the energy provided by the external water source into a strong flow capable of lifting and conveying light and heavy debris from the floor of bodies of water and forcing these debris into a fine mesh filter for retention and later disposal.
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公开(公告)号：US20110247601A1
公开(公告)日：2011-10-13
申请号：US13080936
申请日：2011-04-06
IPC分类号： F02B33/04
CPC分类号： F02B33/04
摘要： A two-cycle engine including exhaust, air inlet, scavenging and air/fuel intake windows disposed in the cylinder wall, a reciprocating piston driving a crankshaft, and curved gas-conveying channels connecting the crankcase chamber with the cylinder bore, the channels being opened by the reciprocating piston and the channels producing centrifugation of gases circulating therein to produce lean and rich components of an air/fuel mixture, wherein the lean component is circulated in a region of the combustion chamber remote from the exhaust window for promoting reduced combustion residues.
摘要翻译： 一个双循环发动机，包括排气，进气，扫气和设置在气缸壁中的空气/燃料进气窗，驱动曲轴的往复运动活塞和连接曲轴箱室与气缸孔的弯曲气体输送通道，通道打开 通过往复式活塞和通道产生在其中循环的气体的离心，以产生空气/燃料混合物的贫和丰富的组分，其中贫组分在远离排气窗的燃烧室的区域中循环，以促进减少的燃烧残余物。
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公开(公告)号：US11903339B1
公开(公告)日：2024-02-20
申请号：US18121170
申请日：2023-03-14
IPC分类号： A01D34/416
CPC分类号： A01D34/4163 , A01D34/4166
摘要： The cutting head assembly object of the present invention comprises a trimmer line feed mechanism and a trimmer line winding mechanism. A lower cover member coupled to the housing member and has a central opening to hold a ground engaging button member. The ground engaging button member is rotationally engaged to the spool and a lower cover. The upper section of the ground engaging button member and the internal walls of the cover ring have radially and axially extending structures which cooperate with each other to provide a ratcheting and indexing mechanisms that allows controlled rotation of the spool which is constrained from axial movement relative to the head enclosure by biasing the force of a compression spring which also maintains the ground engaging member in an extended position. The winding mechanism allows to manually turn the knob in one direction while the indexing mechanism allows to control rotational increments of the knob to allow the spool to release controlled increments of line when the ground engaging member is bumped against the ground and to stop rotation of the spool during normal running position.
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公开(公告)号：US11632903B1
公开(公告)日：2023-04-25
申请号：US17981751
申请日：2022-11-07
IPC分类号： A01D34/416
摘要： The cutting head assembly object of the present invention comprises a trimmer line feed mechanism and a trimmer line winding mechanism. A lower cover member coupled to the housing member and has a central opening to hold a ground engaging button member. The ground engaging button member is rotationally engaged to the spool. The upper section of the ground engaging button member and the internal walls of the cover ring have radially and axially extending structures which cooperate with each other to provide a ratcheting and indexing mechanisms that allows controlled rotation of the spool which is constrained from axial movement relative to the housing member by biasing the force of a compression spring which also maintains the ground engaging member in an extended position. The winding mechanism allows to manually turn the knob in one direction while the indexing mechanism allows to control rotational increments of the knob to allow the spool to release controlled increments of line when the ground engaging member is bumped against the ground and to stop rotation of the spool during normal running position.
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公开(公告)号：US09856666B2
公开(公告)日：2018-01-02
申请号：US15147165
申请日：2016-05-05
IPC分类号： E04H4/12 , E04H4/16 , C02F1/00 , B01D29/23 , C02F103/42
CPC分类号： E04H4/1636 , C02F1/001 , C02F2103/42 , C02F2201/006
摘要： The present invention consist of an improved and very compact hand held pool debris removal system using a hydrodynamic water circulation device capable of producing significant water flow through a conduit. Such water flow is then used to lift and convey debris from bodies of water such as fountains, ponds and swimming pools. The device operates by creating a high speed water jet curtain using an external source of energy by means of pressurized water, which impinges on an steady body of water transforming the energy provided by the external water source into a strong flow capable of lifting and conveying light and heavy debris from the floor of bodies of water and forcing these debris into a fine mesh filter for retention and later disposal.
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公开(公告)号：US20100037874A1
公开(公告)日：2010-02-18
申请号：US12539992
申请日：2009-08-12
CPC分类号： F02F1/22
摘要： A two-stroke internal combustion engine is provided. The engine includes a block defining a crankcase for enclosing a fuel mixture and a cylinder chamber formed at an end of a cylinder bore, an air passage in fluid communication with the cylinder bore, a scavenging transfer passage communicating between the crankcase and the cylinder chamber and having a primary transfer port in communication with a secondary transfer port, the secondary port having a first and a spaced-apart second window with a bridge spanning the space therebetween, and a piston slideably positioned in the cylinder bore and having a channel formed in a periphery of the piston and having a piston opening defined therein for providing selective communication between the crankcase and the transfer passage.
摘要翻译： 提供二冲程内燃机。 发动机包括限定用于封闭燃料混合物的曲轴箱和形成在气缸孔的端部的气缸室，与气缸孔流体连通的空气通道，在曲轴箱和气缸室之间连通的扫气传递通道，以及 具有与二次转移口连通的一次转移口，该次级端口具有第一和第二窗口，该第二窗口具有横跨其间的空间的桥梁，以及可滑动地定位在气缸孔中的活塞， 活塞的周边并且具有限定在其中的活塞开口，用于提供曲轴箱和输送通道之间的选择性连通。
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