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1. 发明授权

US06935285B2 Two-cycle combustion engine having two-staged piston 失效
标题翻译：具有两级活塞的双循环内燃机
公开(公告)号：US06935285B2
公开(公告)日：2005-08-30
申请号：US10412523
申请日：2003-04-11
申请人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
IPC分类号： F02B33/14 , F02B1/04 , F02B25/16 , F02B25/20 , F02B25/22 , F02B33/04 , F02B33/30 , F02B33/44 , F02B63/02 , F02B75/02 , F02B75/16
CPC分类号： F02B75/16 , F02B1/04 , F02B25/22 , F02B33/04 , F02B33/14 , F02B33/30 , F02B63/02 , F02B2075/025
摘要： A two-cycle combustion engine having a two-staged piston, is simple in structure and inexpensive and addresses a undesirable blow-off phenomenon of the air-fuel mixture. The two-cycle combustion engine includes a cylinder block having a two-staged cylinder bore with a reduced diameter bore portion and a large diameter bore portion, and a two-staged piston having a reduced diameter piston portion and a large diameter piston portion. An annular auxiliary chamber is defined between the two-staged cylinder bore and the reduced diameter piston portion. The two-cycle combustion engine also includes an air-fuel mixture passage for introducing the air-fuel mixture into a crank member, an air passage for introducing air into the auxiliary chamber, a scavenge passage for supplying the air-fuel mixture within the crank chamber into a combustion chamber, and injection passages and for injecting the air within the auxiliary chamber into the combustion chamber to counter a press-out issue.
摘要翻译：具有两级活塞的双循环内燃机结构简单，价格低廉，并且解决了空气 - 燃料混合物不合乎要求的脱流现象。双循环内燃机包括具有直径较小的孔部分和大直径孔部分的两级气缸孔的气缸体和具有减小直径的活塞部分和大直径活塞部分的两级活塞。在两级气缸孔和减径活塞部分之间限定一个环形辅助室。双循环内燃机还包括用于将空气燃料混合物引入曲柄构件的空气燃料混合通道，用于将空气引入辅助室的空气通道，用于将空气 - 燃料混合物供给到曲柄内的清除通道腔室进入燃烧室，以及喷射通道，用于将辅助室内的空气注入燃烧室，以抵抗压出问题。

2. 发明申请

US20050284430A1 Air scavenging-type two-cycle engine 有权
标题翻译：空气清扫型双循环发动机
公开(公告)号：US20050284430A1
公开(公告)日：2005-12-29
申请号：US10530153
申请日：2003-10-10
申请人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
IPC分类号： F01M3/02 , F02B25/22 , F02B75/02 , F02M35/10 , F02B25/00 , F02B33/04
CPC分类号： F02B25/22 , F01M3/02 , F02B2075/025 , F02M35/1019 , F02M35/10275 , F02M35/108
摘要： An engine including first scavenging passages for fluidly connecting between a combustion chamber and a crank chamber through bearings for the crankshaft, second scavenging passages fluidly connecting directly between the combustion chamber and the crank chamber, a suction chamber formed in a side face of a piston. An air-fuel mixture is sucked into the suction chamber and an air is introduced into the crank chamber. During the intake stroke, the air-fuel mixture from the air-fuel mixture passage is introduced into the first scavenging passages through the suction chambers, and the air is introduced into the crank chamber. During the scavenging stroke, before the air-fuel mixture in the first scavenging passages is introduced into the combustion chamber, introduction of the air in the crank chamber into the combustion chamber through the second scavenging passages starts.
摘要翻译：一种发动机，包括用于通过曲轴的轴承将燃烧室与曲柄室流体连接的第一扫气通道，直接在燃烧室和曲柄室之间流体连接的第二扫气通道，形成在活塞的侧面的吸入室。空气 - 燃料混合物被吸入吸入室，并且空气被引入到曲柄室中。在进气冲程期间，来自空气 - 燃料混合物通道的空气 - 燃料混合物通过抽吸室被引入到第一扫气通道中，空气被引入曲柄室。在清扫行程中，在第一扫气通道内的空气混合物被引入到燃烧室之前，通过第二扫气通道将曲柄室内的空气引入燃烧室。

3. 发明授权

US07536982B2 Two-cycle combustion engine of air scavenging type 有权
标题翻译：空气清扫型双循环内燃机
公开(公告)号：US07536982B2
公开(公告)日：2009-05-26
申请号：US10530153
申请日：2003-10-10
申请人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
IPC分类号： F02B33/04 , F02B25/00
CPC分类号： F02B25/22 , F01M3/02 , F02B2075/025 , F02M35/1019 , F02M35/10275 , F02M35/108
摘要： An engine including first scavenging passages for fluidly connecting between a combustion chamber and a crank chamber through bearings for the crankshaft, second scavenging passages fluidly connecting directly between the combustion chamber and the crank chamber, a suction chamber formed in a side face of a piston. An air-fuel mixture is sucked into the suction chamber and an air is introduced into the crank chamber. During the intake stroke, the air-fuel mixture from the air-fuel mixture passage is introduced into the first scavenging passages through the suction chambers, and the air is introduced into the crank chamber. During the scavenging stroke, before the air-fuel mixture in the first scavenging passages is introduced into the combustion chamber, introduction of the air in the crank chamber into the combustion chamber through the second scavenging passages starts.
摘要翻译：一种发动机，包括用于通过曲轴的轴承将燃烧室与曲柄室流体连接的第一扫气通道，直接在燃烧室和曲柄室之间流体连接的第二扫气通道，形成在活塞的侧面的吸入室。空气 - 燃料混合物被吸入吸入室，并且空气被引入到曲柄室中。在进气冲程期间，来自空气 - 燃料混合物通道的空气 - 燃料混合物通过抽吸室被引入到第一扫气通道中，空气被引入曲柄室。在清扫行程中，在第一扫气通道内的空气混合物被引入到燃烧室之前，通过第二扫气通道将曲柄室内的空气引入燃烧室。

4. 发明授权

US06895909B2 Two-cycle combustion engine having two-staged piston 失效
标题翻译：具有两级活塞的双循环内燃机
公开(公告)号：US06895909B2
公开(公告)日：2005-05-24
申请号：US10411858
申请日：2003-04-11
申请人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Yoshiro Yamane , Masanori Kobayashi
IPC分类号： F02B33/14 , F02B1/04 , F02B23/08 , F02B25/20 , F02B25/22 , F02B33/04 , F02B63/02 , F02B75/02 , F02B75/16 , F02F1/22 , F02F3/00 , F02M35/10 , F02M35/108 , F02M71/02
CPC分类号： F02M35/1019 , F02B1/04 , F02B25/22 , F02B33/04 , F02B33/14 , F02B63/02 , F02B75/16 , F02B2075/025 , F02F1/22 , F02M35/108 , F02M71/02 , Y02T10/14
摘要： A two-cycle combustion engine with a two-staged piston addresses a blow-off phenomenon of an air-fuel mixture. A cylinder block has a two-staged cylinder bore with a reduced diameter bore portion and a large diameter bore portion, and a two-staged piston having a reduced diameter piston portion and a large diameter piston portion. An annular auxiliary chamber is defined between the cylinder bore and the two-staged piston. An air passage introduces air mixed with oil into a crank chamber. An air-fuel mixture passage introduces the air-fuel mixture into the auxiliary chamber. A scavenge air passage supplies the air within the crank chamber into a combustion chamber, and an injection passage injects the air-fuel mixture within the auxiliary chamber into the combustion chamber from an inner peripheral surface of the cylinder block in a direction oriented substantially diagonally upwardly.
摘要翻译：具有两级活塞的双循环内燃机解决了空气 - 燃料混合物的溢流现象。气缸体具有直径较小的孔部分和大直径孔部分的两级气缸孔，以及具有减小直径的活塞部分和大直径活塞部分的两级活塞。在气缸孔和两级活塞之间限定一个环形辅助室。空气通道将与油混合的空气引入曲柄室。空气 - 燃料混合物通道将空气 - 燃料混合物引入辅助室。清扫空气通道将曲柄室内的空气供应到燃烧室中，并且喷射通道沿着气缸体的内周表面沿着大致向对角线方向取向的方向将辅助室内的空气燃料混合物喷射到燃烧室内。

5. 发明授权

US06213677B1 Joint mechanism for mowing machine 有权
标题翻译：割草机联合机构
公开(公告)号：US06213677B1
公开(公告)日：2001-04-10
申请号：US09185462
申请日：1998-11-03
申请人： Yoshiro Yamane , Tsuneyoshi Yuasa , Kazuhiko Takemoto , Tadao Yashirodai
发明人： Yoshiro Yamane , Tsuneyoshi Yuasa , Kazuhiko Takemoto , Tadao Yashirodai
IPC分类号： A01G306
CPC分类号： A01D34/905 , F16D1/08 , F16D2001/062 , Y10T403/455 , Y10T403/606 , Y10T403/7061
摘要： A joint mechanism for a mowing machine which can be easily assembled and disassembled, including a support member of a casing which houses a cylindrical damper, which prevents vibration of a power unit from being transmitted to a rod, a holder in which the rod is inserted, and a clamp, which clamp prevents the damper and the holder from unintentionally separating from the support member, being inserted therein. The clamp has a flexible arm which extends in the direction of an output shaft of a power unit, and an engagement hook is formed on the tip of the arm. An engagement hole which the engagement hook of the clamp engages is provided on the support member.
摘要翻译：一种用于可以容易地组装和拆卸的割草机的关节机构，包括容纳圆柱形阻尼器的壳体的支撑构件，其防止动力单元的振动被传递到杆，其中插入杆的保持器以及夹具，该夹具防止阻尼器和保持器与支撑构件无意地分离，插入其中。夹具具有沿动力单元的输出轴的方向延伸的柔性臂，并且在臂的尖端上形成接合钩。在支撑构件上设置有夹具的接合钩接合的接合孔。

6. 发明授权

US6044926A Muffler for small general-purpose engine 有权
标题翻译：消声器用于小型通用发动机
公开(公告)号：US6044926A
公开(公告)日：2000-04-04
申请号：US196012
申请日：1998-11-19
申请人： Yoshiro Yamane , Tsuneyoshi Yuasa , Kazuhiko Takemoto , Tadao Yashirodai
发明人： Yoshiro Yamane , Tsuneyoshi Yuasa , Kazuhiko Takemoto , Tadao Yashirodai
IPC分类号： F01N1/08 , F01N1/10 , F01N13/18 , F01N3/02
CPC分类号： F01N13/1872 , F01N1/10 , F01N13/185 , F01N13/1888
摘要： A muffler for small general-purpose engine includes a case comprising a pair of case halves coupled together and divided into a first chamber and a second chamber by a partition plate. An inlet of the exhaust gas is provided closer to a first end portion of the case in a first case half. An outlet of the exhaust gas is provided closer to a second end portion of the case in a second case half. A recess projecting from the first chamber toward the second chamber guiding the exhaust gas from the inlet toward the second end portion is provided in the partition plate opposite the inlet. A communication orifice is formed in the partition plate at a location offset from the recess and closer to the first end portion than the inlet.
摘要翻译：用于小型通用发动机的消声器包括壳体，该壳体包括一对连接在一起的壳体半部，并且通过隔板被分成第一腔室和第二腔室。排气的入口在第一壳体半部中靠近壳体的第一端部设置。在第二种情况下，排气的出口靠近壳体的第二端部设置。在与入口相对的隔板中设置有从第一室向第二室突出的从引入件向第二端部引导排气的凹部。连通孔形成在隔板的偏离凹部并且比入口更靠近第一端部的位置处。

7. 外观设计

USD427394S Blower 失效
公开(公告)号：USD427394S
公开(公告)日：2000-06-27
申请号：US98182
申请日：1998-12-22
申请人： Yoshiro Yamane , Tsuneyoshi Yuasa
设计人： Yoshiro Yamane , Tsuneyoshi Yuasa

8. 发明授权

US07146942B2 Two-cycle combustion engine with air scavenging system having pressure reducing device 有权
公开(公告)号：US07146942B2
公开(公告)日：2006-12-12
申请号：US11171881
申请日：2005-06-30
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F02B25/00
CPC分类号： F02M35/1019 , F02B25/22 , F02M35/1017
摘要： To provide an improved air scavenging type two-cycle combustion engine equipped with a pressure reducing device in which clogging of a decompressing hole can easily be removed, a two-cycle combustion engine includes a delivery passage (32) for introducing air into a combustion chamber (9) prior to an air-fuel mixture. This delivery passage (32) has a downstream opening (32c) through which the air is introduced into the combustion chamber by way of a scavenging port (40a). A decompressing hole (38) is defined for communicating the combustion chamber (9) to a portion of the delivery passage (32) and is closed by a piston (16) then ascending, at a timing delayed relative to closure of an exhaust port (31).

9. 发明授权

US07089891B2 Two-cycle combustion engine 有权
标题翻译：双循环内燃机
公开(公告)号：US07089891B2
公开(公告)日：2006-08-15
申请号：US10862667
申请日：2004-06-07
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F02B33/04
CPC分类号： F02B33/04 , F02B25/16 , F02B25/20 , F02B33/30
摘要： To provide a two-cycle combustion engine, in which the blow-off of the air-fuel mixture used as the scavenging gas is avoided and the combustion efficiency of the air-fuel mixture can be increased, the two-cycle combustion engine includes first and second scavenge passages (11, 12) for supplying the air-fuel mixture (M) from a crank chamber (2a) into the combustion chamber (1a) of the combustion engine. Each of the first and second scavenge passages (11, 12) has a lower end portion thereof extended to assume the position where it confronts an outer end face of a bearing (81) for the crankshaft (8), so that the air-fuel mixture (M) within the crank chamber (2a) can be introduced into the first and second scavenge passages (11, 12) through the bearing (81) and be then supplied into the combustion chamber (1a) through the first and second scavenge passages (11, 12).
摘要翻译：为了提供避免用作清扫气体的空气 - 燃料混合物的吹扫的双循环内燃机，并且可以提高空气 - 燃料混合物的燃烧效率，所以双循环内燃机包括第一以及用于将空气燃料混合物（M）从曲柄室（2a）供应到内燃机的燃烧室（1a）中的第二扫气通道（11,12）。第一和第二清扫通道（11,12）中的每一个具有下端部，其延伸以呈现其与用于曲轴（8）的轴承（81）的外端面相对的位置，使得空气燃料曲柄室（2a）内的混合物（M）可以通过轴承（81）被引入到第一和第二扫气通道（11,12）中，然后通过第一和第二扫气通道（11,12）。

10. 发明授权

US07077078B2 Engine cooling structure 有权
标题翻译：发动机冷却结构
公开(公告)号：US07077078B2
公开(公告)日：2006-07-18
申请号：US10941880
申请日：2004-09-16
申请人： Tsuneyoshi Yuasa , Masanori Kobayashi
发明人： Tsuneyoshi Yuasa , Masanori Kobayashi
IPC分类号： F01P1/02
CPC分类号： F02B63/02 , F01P1/02 , F01P5/06 , F01P2060/16 , F02B75/16
摘要： In an engine cooling structure, an engine cover defines together with a cylinder a space connected through a cooling air inlet to a cooling air supply device. An exhaust muffler has an exhaust gas discharge opening formed near a back end part of a side, which is opposite to a side facing the cylinder, of the exhaust muffler. The opening is positioned at a height included in a vertical dimension of the cylinder. A cooling air passage, through which a cooling air taken in the space defined by the engine cover and the cylinder through the cooling air inlet flows, is formed so as to cool the cylinder and the exhaust muffler. The cooling air passage includes a main cooling passage for guiding part of cooling air used for cooling the cylinder through a space around the exhaust muffler to a space around the opening, and a cooling air bypass passage for guiding part of cooling air used for cooling the cylinder directly to the space around the opening.
摘要翻译：在发动机冷却结构中，发动机盖与气缸一起限定通过冷却空气入口连接到冷却空气供应装置的空间。排气消声器具有在排气消声器的与面向气缸的一侧相反侧的后端部附近形成的排气排出口。开口位于包括在气缸的垂直尺寸中的高度处。冷却空气通道形成为冷却气缸和排气消声器，通过该冷却空气通道被吸入由发动机盖和气缸限定的空间中的冷却空气通过冷却空气入口流动。冷却空气通道包括主冷却通道，用于将用于冷却气缸的冷却空气的一部分引导通过排气消声器周围的空间到开口周围的空间，以及冷却空气旁通通道，用于引导冷却用的冷却空气的一部分缸直接连接到开口周围的空间。

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