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1. 发明授权

US4297976A Piston and cylinder assemblies 失效
标题翻译：活塞和气缸组件
公开(公告)号：US4297976A
公开(公告)日：1981-11-03
申请号：US44074
申请日：1979-05-31
申请人： Ludovico Bruni , Pierantonio Iguera
发明人： Ludovico Bruni , Pierantonio Iguera
IPC分类号： F04B39/00 , C22C21/02 , F02F1/00 , F02F3/00 , F04B39/12 , F16J10/02 , F16J10/04
CPC分类号： C22C21/02 , F02F2007/009 , F05C2201/021
摘要： In a piston and cylinder assembly in which the piston is made of an aluminium alloy, the wall of the cylinder contacted by the piston is formed of a hyper-eutectic silicon aluminium alloy having the composition by weight percentages of silicon (Si) 12-20%; copper (Cu) 0.5-5%; iron (Fe) 1.0-6%; magnesium (Mg) 0.2-2%; nickel (Ni) 0.5-4%; and optionally manganese (Mn) 0-5%; cobalt (Co) 0-3%; chromium (Cr) 0-3%; tin (Sn) 0-8%; titanium (Ti) 0-0.3%; lead (Pb) 0-5%; and molybdenum (Mo) 0-5%, the remainder being aluminium.
摘要翻译：在其中活塞由铝合金制成的活塞和气缸组件中，与活塞接触的气缸的壁由超共晶硅铝合金形成，其具有硅（Si）12-20重量百分比的组成％; 铜（Cu）0.5-5％; 铁（Fe）1.0-6％; 镁（Mg）0.2-2％; 镍（Ni）0.5-4％; 和任选的锰（Mn）0-5％; 钴（Co）0-3％; 铬（Cr）0-3％; 锡（Sn）0-8％; 钛（Ti）0-0.3％; 铅（Pb）0-5％; 和钼（Mo）为0-5％，其余为铝。

2. 发明授权

US4903580A Piston for alternative endothermic engines creating oil cushion lubrication 失效
标题翻译：用于替代吸热发动机的活塞，产生油垫润滑
公开(公告)号：US4903580A
公开(公告)日：1990-02-27
申请号：US218616
申请日：1988-07-13
申请人： Ludovico Bruni
发明人： Ludovico Bruni
IPC分类号： F02F3/02 , F16J1/02 , F16J1/08
CPC分类号： F16J1/02 , F02F3/022 , F02F3/027 , F16J1/08
摘要： An improvement of pistons for alternative, endothermic four-cycle engines, in which notches or grooves are cut on opposite sides of the oval surface of the piston skirt and arranged in a parallel fashion with respect to the piston pin. The grooves create concavities which are closed off frontally by the cylinder wall and laterally by the piston skirt. The purpose of the grooves is to create a series of pockets for the lubricating oil, which is under pressure during engine operation, and to improve lubrication in the areas of maximum piston stress.
摘要翻译：对于替代的吸热四冲程发动机的活塞的改进，其中切口或槽在活塞裙部的椭圆形表面的相对侧上被切割并且相对于活塞销以平行的方式布置。槽形成凹部，其由气缸壁正面封闭，并且由活塞裙部侧向封闭。凹槽的目的是为发动机运行期间的压力产生一系列用于润滑油的凹坑，并改善最大活塞应力区域的润滑。

3. 再颁专利

USRE35551E Piston for alternative endothermic engines creating oil cushion lubrication 失效
标题翻译：用于替代吸热发动机的活塞，产生油垫润滑
公开(公告)号：USRE35551E
公开(公告)日：1997-07-08
申请号：US290095
申请日：1994-08-15
申请人： Ludovico Bruni
发明人： Ludovico Bruni
IPC分类号： F02F3/02 , F16J1/02 , F16J1/08 , F02F3/00
CPC分类号： F16J1/02 , F02F3/022 , F02F3/027 , F16J1/08
摘要： An improvement of pistons for alternative, endothermic four-cycle engines, in which notches or grooves are cut on opposite sides of the oval surface of the piston skirt and arranged in a parallel fashion with respect to the piston pin. The grooves create concavities which are closed off frontally by the cylinder wall and laterally by the piston skirt. The purpose of the grooves is to create a series of pockets for the lubricating oil which is under pressure during engine operation, and to improve lubrication in the areas of maximum piston stress.
摘要翻译：对于替代的吸热四冲程发动机的活塞的改进，其中切口或槽在活塞裙部的椭圆形表面的相对侧上被切割并且相对于活塞销以平行的方式布置。槽形成凹部，其由气缸壁正面封闭，并且由活塞裙部侧向封闭。凹槽的目的是在发动机运行期间为处于压力下的润滑油产生一系列袋，并且改善最大活塞应力区域的润滑。

4. 发明授权

US4359230A Piston ring with wear resistant coating 失效
标题翻译：活塞环带耐磨涂层
公开(公告)号：US4359230A
公开(公告)日：1982-11-16
申请号：US292127
申请日：1981-08-11
申请人： Ludovico Bruni
发明人： Ludovico Bruni
IPC分类号： F04B39/00 , B23P15/06 , F16J9/20 , F16J9/26 , F16J9/22
CPC分类号： F16J9/20 , B23P15/06
摘要： A piston ring for use in a reciprocating internal combustion engine or in a compressor. The ring has an outer peripheral surface provided with a rotary finish machined curved center portion, rotary finished machined chamfer edges and a final finish plated wear-resistant coating evenly over the complete outer peripheral surface.
摘要翻译：用于往复式内燃机或压缩机中的活塞环。该环具有外周表面，该外圆周表面设置有旋转精加工的弯曲中心部分，旋转精加工倒角边缘和最终精加工的耐磨涂层均匀地涂覆在整个外周表面上。

5. 发明授权

US5081968A Pistons for an internal combustion engine 失效
标题翻译：内燃机活塞
公开(公告)号：US5081968A
公开(公告)日：1992-01-21
申请号：US734469
申请日：1991-07-23
申请人： Ludovico Bruni
发明人： Ludovico Bruni
IPC分类号： F01P3/08 , F02B23/06 , F02F3/00 , F02F3/22 , F16J1/08 , F16J1/09
CPC分类号： F02F3/0023 , F02B23/0672 , F02F3/22 , F16J1/08 , F02F2003/0061 , F05C2201/0448 , Y02T10/125
摘要： A piston for an internal combustion engine is described, the piston having a lower crown portion and an upper crown portion, the upper crown portion including a combustion bowl and a piston ring-groove belt of generally annular form depending from the outer periphery of the crown surface, the lower crown portion comprising a generally circular plate member having an upstanding ring on the upper surface thereof, the upper crown portion and the lower crown portion being joined together by retention means between the combustion bowl and the upstanding ring, and between co-operating spigot and socket means formed on the base of the combustion bowl and on the plate member, to prevent withdrawal by axial forces, and there being an oil cooling gallery defined between the upper crown portion and the lower crown portion.

6. 发明授权

US4831919A Asymmetric oval piston with higher convexity thrust face 失效
标题翻译：不对称的椭圆形活塞具有较高的凸面推力面
公开(公告)号：US4831919A
公开(公告)日：1989-05-23
申请号：US882717
申请日：1986-07-07
申请人： Ludovico Bruni
发明人： Ludovico Bruni
IPC分类号： F02F3/02 , F16G1/02
CPC分类号： F02F3/022 , F16G1/02 , F02F2200/06 , Y10T29/49249
摘要： Pistons are described having oval polar profiles or both oval polar profiles and axial profiles machined to asymmetric curvatures about the plane which includes both the piston axis and the minor axis over at least a part of the skirt length, the asymmetry of the polar profile comprising a greater convexity about the major axis on the thrust face over at least part of the axial length of the skirt region.
摘要翻译：活塞被描述为具有椭圆极性轮廓或椭圆极性轮廓和轴向轮廓，其被加工成围绕平面的不对称曲率，该平面在裙部长度的至少一部分上包括活塞轴线和短轴，极性轮廓的不对称性包括在裙部区域的轴向长度的至少一部分上，在推力面上的长轴上的较大凸度。

7. 发明授权

US5064206A Piston ring 失效
标题翻译：活塞环
公开(公告)号：US5064206A
公开(公告)日：1991-11-12
申请号：US517032
申请日：1990-05-01
申请人： Ludovico Bruni
发明人： Ludovico Bruni
IPC分类号： F02F5/00 , F04B39/00 , F16J9/06 , F16J9/20
CPC分类号： F16J9/206
摘要： An oil control piston ring is described comprising a pair of axially spaced apart side rails, the side rails each having a radially outer periphery forming a rubbing face with a co-operating cylinder wall, an expander having portions which lie between the inner radially extending faces of the side rails and maintain the outer peripheral rubbing faces thereof in a spaced apart relationship characterized in that the radially inner peripheral edge of each side rail is connected by bridging members extending intermittently over at least a part of the inner circumferential length. The side rails and bridge members may be formed from a substantially flat bottomed "U-shaped" channel section.

8. 发明授权

US4674399A Pistons for internal combustion engines 失效
标题翻译：内燃机活塞
公开(公告)号：US4674399A
公开(公告)日：1987-06-23
申请号：US669786
申请日：1984-11-09
申请人： Ludovico Bruni
发明人： Ludovico Bruni
IPC分类号： F02F3/02 , F16J1/04 , F01B31/10
CPC分类号： F16J1/04 , F02F3/02 , F05C2201/021
摘要： A piston for an internal combustion engine has the conventional skirt replaced by top and bottom bearing surfaces spaced apart by a substantial gap of constant width. The top bearing surfaces are connected to the piston crown through the ring band whereas the bottom surfaces are attached to piston bosses by struts. The gap allows the passage of lubricant to the cylinder to ensure adequate lubrication of the bearing surfaces.
摘要翻译：用于内燃机的活塞具有由具有恒定宽度的基本间隙间隔开的顶部和底部轴承表面所代替的传统裙部。顶部轴承表面通过环带连接到活塞冠部，而底部表面通过支柱连接到活塞凸台。间隙允许润滑剂通向气缸，以确保轴承表面的充分润滑。

9. 发明授权

US4515003A Piston shaping 失效
标题翻译：活塞成型
公开(公告)号：US4515003A
公开(公告)日：1985-05-07
申请号：US512404
申请日：1983-07-08
申请人： Ludovico Bruni
发明人： Ludovico Bruni
IPC分类号： F16J1/16 , B23P9/02 , B23P15/10
CPC分类号： B23P9/02 , B23P15/10 , Y10T29/49266
摘要： A method of shaping the gudgeon pin bores formed in gudgeon pin bosses of pistons comprises introducing into the bores portions of a pin-shaped tool before the insertion of the gudgeon pin. A load is applied to the pin-shaped tool and the direction of the load and the shape of the pin-shaped tool are chosen so that areas of bore-defining walls of the bosses subjected to high stresses by the gudgeon pin in use, and therefore liable to crack, are radially outwardly deformed to reduce the incidence of cracks.
摘要翻译：形成在活塞的臀部销凸起部中的形状的舵杆销孔的方法包括在插入舵头销之前引入销形工具的孔部分。负载被施加到销形工具，并且选择负载的方向和销形工具的形状，使得凸起的孔的限定壁的区域在使用中受到舵头的高应力，并且因此易于破裂，径向向外变形以减少裂纹的发生。

10. 发明授权

US4331107A Cooling of diesel engine pistons 失效
标题翻译：柴油机活塞的冷却
公开(公告)号：US4331107A
公开(公告)日：1982-05-25
申请号：US158186
申请日：1980-06-10
申请人： Ludovico Bruni
发明人： Ludovico Bruni
IPC分类号： F01M1/08 , F02B3/06 , F02F3/22 , F01P3/10
CPC分类号： F02F3/22 , F01M2001/086 , F02B3/06
摘要： A Diesel engine piston conventionally has an annular conduit, at the level of the uppermost piston ring, through which lubricating oil circulates. The oil enters and leaves the annular conduit through two longitudinal holes in the piston. According to this invention, a branch conduit extends radially inwardly from the annular conduit to bring oil flow beneath the central part of the piston crown, thereby cooling the latter. The branch conduit is especially useful with a piston having a combustion chamber in its head. The usual discharge hole from the annular conduit is blocked, and a substitute discharge hole, at the end of the branch conduit, opens into the interior of the piston.
摘要翻译：柴油发动机活塞通常具有在最上活塞环的水平面处的环形导管，润滑油通过该水平循环。油通过活塞中的两个纵向孔进入和离开环形导管。根据本发明，分支导管从环形导管径向向内延伸，使得油在活塞顶部的中心部分下方流动，从而冷却后者。分支导管对于其顶部具有燃烧室的活塞是特别有用的。来自环形导管的通常的排放孔被阻塞，并且在分支导管的端部处的替代排出孔通向活塞的内部。

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