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1. 发明申请

US20090289208A1 Pressurized Fluid Discharge Device 审中-公开
标题翻译：加压流体排放装置
公开(公告)号：US20090289208A1
公开(公告)日：2009-11-26
申请号：US12083938
申请日：2006-10-20
申请人： Keitaro Yonezawa , Akira Arisato
发明人： Keitaro Yonezawa , Akira Arisato
IPC分类号： F15B21/04 , F16J15/10
CPC分类号： F16J15/164 , F15B21/044 , F16K47/10
摘要： A female screw hole (31) is opened in an outer surface of a housing (3) of a hydraulic clamp (1), and a leg portion (40a) of a tubular casing (40) is threaded into the female screw hole (31). An annular gasket (41) is fitted to an annular groove (42) formed in a head portion (40b) of the casing (40). On an inner peripheral surface (41a) of the gasket (41), a first annular sealing portion (71) which seals an inner peripheral surface (42a) of the annular groove (42) is provided. On an annular outer end surface (41d) of the gasket (41), a second annular sealing portion (72) which seals a peripheral wall (68) of the female screw hole (31) at the opening part of the housing (3) is provided. A diameter (D1) of the first annular sealing portion (71) is set to a value smaller than a diameter (D2) of the second annular sealing portion (72).
摘要翻译：在液压夹具（1）的壳体（3）的外表面上开有阴螺纹孔（31），并且将管状壳体（40）的腿部（40a）拧入阴螺纹孔（31））。环形垫圈（41）装配到形成在壳体（40）的头部（40b）中的环形槽（42）上。在垫圈（41）的内周面（41a）上，设有密封环状槽（42）的内周面（42a）的第一环状密封部（71）。在垫圈（41）的环形外端表面（41d）上，密封在壳体（3）的开口部分处的内螺纹孔（31）的周壁（68）的第二环形密封部分（72）被提供。第一环形密封部（71）的直径（D1）被设定为小于第二环状密封部（72）的直径（D2）的值。

2. 发明申请

US20080237514A1 Flow Control Valve and Cylinder Apparatus Having the Same 审中-公开
标题翻译：流量控制阀和具有相同的气缸装置
公开(公告)号：US20080237514A1
公开(公告)日：2008-10-02
申请号：US10586866
申请日：2005-01-19
申请人： Keitaro Yonezawa , Akira Arisato
发明人： Keitaro Yonezawa , Akira Arisato
IPC分类号： F16K47/10 , F15B11/00 , F15B15/14
CPC分类号： F16K17/0406 , F15B11/0445 , F15B2211/40515 , F15B2211/40584 , F15B2211/41527 , F15B2211/455 , F15B2211/46 , F15B2211/473 , F15B2211/7053 , F16K15/044 , Y10T137/7764 , Y10T137/7859
摘要： Inside a cartridge-type cylindrical casing (40), a meter-out inlet (43), a valve chamber (44), a rod chamber (46), and a meter-out outlet (47) are formed in that order. The rod chamber (46) and the valve chamber (44) are arranged substantially concentrically, and a check valve seat (53) is provided on an inner peripheral surface of a peripheral wall (44a) of the valve chamber (44). A check ball (52) inserted in the valve chamber (44) is urged toward the check valve seat (53) by a spring (54). A throttle valve seat (59) is provided on a leading end portion of an adjusting rod (45) screwed in the rod chamber (46), and a throttle gap (G) is formed between the throttle valve seat (59) and the check ball (52).
摘要翻译：在筒式圆筒形壳体（40）的内部，依次形成出口出口（43），阀室（44），杆室（46）和出口出口（47）。杆室（46）和阀室（44）基本上同心地布置，并且止回阀座（53）设置在阀室（44）的周壁（44a）的内周表面上。插入阀室（44）中的止回球（52）通过弹簧（54）被推向止回阀座（53）。节流阀座（59）设置在螺杆连接在杆室（46）上的调节杆（45）的前端部分上，节流阀座（59）和支架球（52）。

3. 发明授权

US5468136A Clamping apparatus 失效
标题翻译：夹紧装置
公开(公告)号：US5468136A
公开(公告)日：1995-11-21
申请号：US282544
申请日：1994-07-29
申请人： Akira Arisato , Keitaro Yonezawa
发明人： Akira Arisato , Keitaro Yonezawa
IPC分类号： B21D37/04 , B21D37/14 , B23Q3/06 , B29C33/30 , B30B15/02 , F16B39/12
CPC分类号： B30B15/026 , B29C33/305
摘要： A clamp rod (20) is inserted into a through hole (2) of a base (1). The rod (20) is provided with a first external thread (21) adapted to engage with a clamping internal thread (11a) of a metal mold (11) and a second external thread (22) adapted to engage with a raising and lowering internal thread (12a). When the metal mold (11) is fixedly secured to the base (1), the rod (20) is rotated by an impact wrench (28). Thereupon, the rod (20) is screwed downward along the raising and lowering internal thread (12a) and then along the clamping internal thread (11a). Thereby, the base (1) is pressed downward by a pressing portion (23) of the rod (20).
摘要翻译：夹杆（20）插入基座（1）的通孔（2）中。杆（20）设置有适于与金属模具（11）的夹紧内螺纹（11a）接合的第一外螺纹（21）和适于与升高和降低内部接合的第二外螺纹（22）螺纹（12a）。当金属模具（11）固定地固定到基座（1）上时，杆（20）通过冲击扳手（28）旋转。因此，杆（20）沿着升降内螺纹（12a）向下拧紧，然后沿着夹紧内螺纹（11a）拧紧。由此，基座（1）被杆（20）的按压部（23）向下压。

4. 发明授权

US09573232B2 Actuator and clamp device using same 有权
标题翻译：执行器和夹紧装置使用相同
公开(公告)号：US09573232B2
公开(公告)日：2017-02-21
申请号：US14237410
申请日：2012-03-26
申请人： Hideaki Yokota , Keitaro Yonezawa
发明人： Hideaki Yokota , Keitaro Yonezawa
IPC分类号： B23Q3/08 , B23Q3/06 , B25B5/04 , B25B5/06 , F15B15/14 , F15B15/20
CPC分类号： B23Q3/06 , B25B5/04 , B25B5/06 , B25B5/061 , B25B5/062 , F15B15/1409 , F15B15/1447 , F15B15/204
摘要： A first piston for high load is inserted into a housing so as to be movable vertically, and a second piston for low load is inserted into a cylindrical hole of the first piston so as to be movable vertically. An output portion projects from the second piston to above the housing. A first spring for high load and a second spring for low load are mounted in a spring chamber defined by both pistons and. Both springs and are mounted so as to urge the first piston and the second piston upward. A switching mechanism disposed in the pressure fluid chamber at a side opposite to the spring chamber, connects the first piston selectively to the housing or the second piston.
摘要翻译：用于高负载的第一活塞被插入到壳体中以便可垂直移动，并且用于低负载的第二活塞被插入到第一活塞的圆柱形孔中以便可垂直移动。输出部分从第二活塞突出到壳体的上方。用于高负载的第一弹簧和用于低负载的第二弹簧安装在由两个活塞和两个活塞限定的弹簧室中。两个弹簧并被安装成向上推动第一活塞和第二活塞。在与弹簧室相反的一侧设置在压力流体室中的切换机构将第一活塞选择性地连接到壳体或第二活塞。

5. 发明授权

US09458865B2 Cylinder device with force multiplier 有权
标题翻译：带力乘数的气缸装置
公开(公告)号：US09458865B2
公开(公告)日：2016-10-04
申请号：US14128054
申请日：2012-05-16
申请人： Hideaki Yokota , Keitaro Yonezawa
发明人： Hideaki Yokota , Keitaro Yonezawa
IPC分类号： F15B15/16 , F15B15/26 , B25B5/06 , B25B5/12 , B25B5/16 , F15B3/00 , F15B15/20 , F15B15/14
CPC分类号： F15B15/16 , B25B5/061 , B25B5/062 , B25B5/064 , B25B5/122 , B25B5/16 , F15B3/00 , F15B15/1409 , F15B15/204 , F15B15/26
摘要： A first piston (10) is inserted in a housing (2) so as to be hermetically movable vertically. A second piston (20) is inserted in a cylindrical hole (14) of the first piston (10) so as to be hermetically movable axially, and has an output rod (26) projecting upward from the housing (2). A lock chamber (40) is formed below the first piston (10) and the second piston (20), and a release chamber (42) is formed above the first piston (10) and the second piston (20). A force multiplier (52) is arranged in the housing (2) so as to cause (i) a first force, with which a pressurized fluid supplied into the lock chamber (40) pushes the first piston (10) upward, to be transformed in a force-multiplying manner into a second force and (ii) the second force to be transmitted to the second piston (20). Further, a change-over mechanism (54) is arranged in the housing (2) so as to selectively couple the first piston (10) to the housing (2) or the second piston (20).
摘要翻译：第一活塞（10）插入壳体（2）中以便能够垂直地气密地移动。第二活塞（20）插入到第一活塞（10）的圆柱形孔（14）中以便可轴向移动，并且具有从壳体（2）向上突出的输出杆（26）。在第一活塞（10）和第二活塞（20）的下方形成锁定室（40），在第一活塞（10）和第二活塞（20）的上方形成有释放室（42）。在壳体（2）中布置有力乘数（52），以便使（i）第一力，供给到锁定室（40）中的加压流体向上推动第一活塞（10）以转化（ii）第二力被传递到第二活塞（20）。此外，转换机构（54）布置在壳体（2）中，以便选择性地将第一活塞（10）联接到壳体（2）或第二活塞（20）。

6. 发明申请

US20080157451A1 Positioning apparatus and clamping system having the same 有权
标题翻译：具有该定位装置和夹紧系统
公开(公告)号：US20080157451A1
公开(公告)日：2008-07-03
申请号：US12073383
申请日：2008-03-05
申请人： Keitaro Yonezawa , Yosuke Haruna
发明人： Keitaro Yonezawa , Yosuke Haruna
IPC分类号： B23Q3/08
CPC分类号： B23Q1/009 , B23Q3/183
摘要： A plug member (12) inserted into a positioning hole (5) formed in a second block (2) is projected from a first block (1). A plurality of slide portions (61) opposed to each other across the plug member (12) are arranged around the plug member (12) movably in a first radial direction (D1) substantially orthogonal to the opposed direction thereof. A first pressing member (15) and a second pressing member (19) are arranged outside the slide portions (61) diametrically expandably and diametrically contractibly and axially movably. The first pressing member (15) is driven toward a base end by a drive device, whereby the slide portions (61) expand the first pressing member (15) via the second pressing member (19), thereby the slide portions (61) are moved in the first radial direction (D1) with respect to the plug member (12). After the movement, when the second pressing member (19) is blocked from moving toward the base end, the first pressing member (15) strongly presses an inner peripheral surface of the positioning hole (5) in the second radial direction (D2).
摘要翻译：插入到形成在第二块（2）中的定位孔（5）中的插塞构件（12）从第一块（1）突出。沿插塞构件12彼此相对的多个滑动部61沿与其相反方向大致正交的第一径向（D 1）可动地设置在插塞构件12的周围。第一按压构件（15）和第二按压构件（19）布置在直径可膨胀和径向收缩和轴向移动的滑动部分（61）的外侧。第一按压部件（15）通过驱动装置朝基端方向驱动，滑动部（61）经由第二按压部件（19）使第一按压部件（15）膨胀，滑动部（61）相对于插塞构件（12）沿第一径向方向（D 1）移动。在移动之后，当第二按压部件19阻止向基端移动时，第一按压部件15在第二径向（D 2）上强力地按压定位孔（5）的内周面，。

7. 发明申请

US20060273504A1 Clamping device 有权
标题翻译：夹紧装置
公开(公告)号：US20060273504A1
公开(公告)日：2006-12-07
申请号：US10570892
申请日：2004-09-07
申请人： Keitaro Yonezawa , Gaku Yoshimura , Yosuke Haruna
发明人： Keitaro Yonezawa , Gaku Yoshimura , Yosuke Haruna
IPC分类号： B23Q3/00
CPC分类号： B23Q1/009
摘要： A plug portion (27) is projected from a first block (1) so as to be inserted into a insertion hole (5) opened in a second block (2). A support surface (9a) is formed on the first block (1) so as to be brought into contact with a supported surface (2a) formed on the second block (2). In the support surface (9a) is opened a fluid flow hole (59). A gap supporting member (K) acting force upon the second block (2) in such a direction as to separate the second block (2) from the first block (1) so as to form a gap (G1) between the supported surface (2a) and the support surface (9a) is provided on the first block (1). A pull member (21) eliminates the gap (G1) by making the second block (2) approach the first block (1) against the force of the gap supporting member (K) in such a condition that an outer peripheral surface of the plug portion (27) is in close contact with an inner peripheral surface of the insertion hole (5) to bring the supported surface (2a) into contact with the support surface (9a).
摘要翻译：插头部分（27）从第一块（1）突出以插入到在第二块（2）中打开的插入孔（5）中。支撑表面（9a）形成在第一块（1）上，以便与形成在第二块（2）上的支撑表面（2a）接触。在支撑表面（9a）中打开流体流动孔（59）。间隙支撑构件（K）沿着使第二块（2）与第一块（1）分离的方向对第二块（2）施加作用力，以在支撑表面（2）之间形成间隙（G 1）（2a）和所述支撑表面（9a）设置在所述第一块（1）上。拉动构件（21）通过使第二块（2）克服间隙支撑构件（K）的力而接近第一块（1）而消除间隙（G 1），条件是，插头部分（27）与插入孔（5）的内周表面紧密接触，以使支撑表面（2a）与支撑表面（9a）接触。

8. 发明授权

US06666440B2 Rotary clamp 有权
标题翻译：旋转夹
公开(公告)号：US06666440B2
公开(公告)日：2003-12-23
申请号：US10299325
申请日：2002-11-18
申请人： Keitaro Yonezawa , Hideaki Yokota , Yosuke Haruna
发明人： Keitaro Yonezawa , Hideaki Yokota , Yosuke Haruna
IPC分类号： B23Q308
CPC分类号： B25B5/062
摘要： A housing (3) has an upper end wall (3a) and a lower end wall (3b) which support an upper slide portion (11) and a lower slide portion (12) of a clamp rod (5) vertically movably, respectively. The rod (5) is moved downwards for clamping through a clamp spring (20). The lower slide portion (12) has an outer periphery provided with guide grooves (26), each of which comprises a helical rotary groove (27) and a straight groove (28), peripherally in plural number. Engaging balls (29) which are fitted into the respective guide grooves (26) are rotatably supported by through holes (31) provided in an upper portion of the lower end wall (3b). A sleeve (35) is externally fitted over the engaging balls (29) rotatably around an axis.
摘要翻译：壳体（3）具有分别支撑可上下移动的夹紧杆（5）的上滑动部分（11）和下滑动部分（12）的上端壁（3a）和下端壁（3b）。杆（5）向下移动以通过夹紧弹簧（20）夹紧。下滑动部分（12）具有设置有多个引导槽（26）的外周，每个引导槽（26）包括螺旋形旋转槽（27）和多个直槽（28）。装配在相应导向槽（26）中的接合球（29）由设置在下端壁（3b）的上部的通孔（31）可旋转地支撑。一个套筒（35）以可绕轴线转动的方式外接在接合球（29）上。

9. 发明授权

US06286420B1 Overload protector for mechanical press 失效
标题翻译：机械压力机用过载保护器
公开(公告)号：US06286420B1
公开(公告)日：2001-09-11
申请号：US09466821
申请日：1999-12-20
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
IPC分类号： F16P300
CPC分类号： F15B11/028 , F15B2211/2053 , F15B2211/30505 , F15B2211/40515 , F15B2211/50518 , F15B2211/528 , F15B2211/55 , F15B2211/6355 , F15B2211/7052 , F15B2211/76
摘要： A pneumatic hydraulic booster pump (5), an overload protecting valve (10) and a pressure compensating valve (14) are connected in parallel with an overload absorbing hydraulic chamber (3) within a slide (2) of a mechanical press (1). The pressure compensating valve (14) has a restricting passage (60) and a relief valve (61) connected to each other in series. The relief valve (61) comprises a valve closing piston (71) which pushes a relief member (72) in a direction for valve closing, a valve closing actuation chamber (73) which communicates with a compressed air supply passage (30) of the booster pump (5), and a compression spring (74) which urges the relief member (72) in the direction for valve closing.
摘要翻译：气动液压增压泵（5），过载保护阀（10）和压力补偿阀（14）与机械压力机（1）的滑块（2）内的过载吸收液压室（3）并联连接，。压力补偿阀（14）具有彼此串联连接的限制通道（60）和安全阀（61）。安全阀（61）包括一个关闭活塞（71），该阀关闭活塞沿一个关闭方向推动释放构件（72）;一个关闭致动室（73），与压缩空气供应通道增压泵（5）和压缩弹簧（74），该压缩弹簧（74）沿着关闭方向推动释放构件（72）。

10. 发明授权

US6113086A Rotary clamping apparatus 失效
标题翻译：旋转夹紧装置
公开(公告)号：US6113086A
公开(公告)日：2000-09-05
申请号：US962259
申请日：1997-10-31
申请人： Keitaro Yonezawa
发明人： Keitaro Yonezawa
IPC分类号： B23Q3/06 , B25B5/06 , F15B15/06 , F15B15/26 , B23Q3/08
CPC分类号： B25B5/06 , B25B5/062
摘要： An annular piston (4) is inserted into a housing (1) axially movably but unrotatably. A clamp rod (9) is hermetically inserted into a through-hole (4a) of the piston (4). When the piston (4) is lowered by a clamping spring (20), a back pressure is produced in pressurized oil within a second chamber (12) formed below the piston (4). The back pressure pushes an input portion (9a) for clamping provided at a lower end of the clamp rod (9) to a stopper (23) through a bearing (24) and a transmission plate (25). The piston (4) is lowered relatively to the clamp rod (9) at a raised position, whereby the clamp rod (9) is rotated by a converting mechanism (21).
摘要翻译：环形活塞（4）可轴向移动但不能旋转地插入壳体（1）中。夹紧杆（9）气密地插入活塞（4）的通孔（4a）中。当活塞（4）被夹紧弹簧（20）下降时，在形成在活塞（4）下方的第二腔室（12）内的加压油中产生背压。背压通过轴承（24）和传动板（25）将设置在夹紧杆（9）的下端的用于夹紧的输入部（9a）推到止动器（23）。活塞（4）在升高位置相对于夹紧杆（9）下降，由此夹紧杆（9）由转换机构（21）旋转。

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