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1. 发明授权

US07887287B2 Turbofan jet engine 有权
标题翻译： Turbofan喷气发动机
公开(公告)号：US07887287B2
公开(公告)日：2011-02-15
申请号：US11902564
申请日：2007-09-24
申请人： Ryoji Yanagi , Hisao Futamura , Hitoshi Fujiwara
发明人： Ryoji Yanagi , Hisao Futamura , Hitoshi Fujiwara
IPC分类号： F02K3/02
CPC分类号： F02K3/065 , B64D27/18 , B64D33/02 , B64D33/04 , B64D2033/026 , F02K3/075 , F02K3/077 , Y02T50/44 , Y02T50/671
摘要： To provide a turbofan jet engine for a supersonic aircraft, which enables a supersonic cruise with small additional drag due to engine installation while minimizing the jet noise at takeoff. In the turbofan jet engine, two fans, i.e., a front fan and an aft fan, are disposed, and an air inlet and an air outlet are provided on each of the front and aft fans, whereby at takeoff, air is introduced to each of the air inlets of the front and aft fans to drive the front and aft fans in parallel, and the air is then ejected from each of the outlets. On the other hand, during a supersonic cruise, an inlet of an aft fan duct is coupled to an outlet of a front fan duct, where external air is introduced only to an air inlet of the front fan duct and the air compressed through the front fan is fed to the aft fan duct and further compressed through the aft fan, and ejected from a nozzle, so that the front and aft fans are driven in series.
摘要翻译：为超音速飞机提供涡轮风扇喷气发动机，由于发动机安装，能够实现超短距离巡航，同时使起飞时的喷气噪声最小化。在涡轮风扇喷气发动机中，设置有两个风扇，即前风扇和后风扇，并且在前风扇和后风扇中的每一个上设置有空气入口和空气出口，由此在起飞时，空气被引入到每个的前风扇和后风扇的进气口并联驱动前后风扇，然后从每个出口排出空气。另一方面，在超音速巡航期间，后风扇通道的入口连接到前风扇通道的出口，其中外部空气仅被引入前风扇通道的空气入口，并且通过前部压缩的空气风扇被送入后风扇风管，并通过后风扇进一步压缩，并从喷嘴喷出，使得前后风扇被串联驱动。

2. 发明授权

US07921637B2 High bypass-ratio turbofan jet engine 有权
标题翻译：高旁通比涡轮风扇喷气发动机
公开(公告)号：US07921637B2
公开(公告)日：2011-04-12
申请号：US12392203
申请日：2009-02-25
申请人： Ryoji Yanagi , Hitoshi Fujiwara
发明人： Ryoji Yanagi , Hitoshi Fujiwara
IPC分类号： F02K3/02
CPC分类号： F02K3/065 , B64C7/02 , B64D29/02 , F02C7/04 , F05D2250/14 , Y02T50/671
摘要： To provide a turbofan jet engine which is capable of increasing the bypass ratio without increasing the fan diameter, and of reducing air resistance acting on the engine, a front fan duct that discharges air compressed by a front fan to the atmosphere and an aft fan duct that introduces air into an aft fan are disposed such as to change cross-sectional shapes thereof by rotating around a core engine in a counterclockwise direction, so that the cross-sectional geometric relationship between the front fan duct and the aft fan duct at a position immediately posterior to the front fan and a cross-sectional geometric relationship between the front fan duct and the aft fan duct at a position immediately anterior to the aft fan are inverted.
摘要翻译：为了提供一种涡轮风扇喷气发动机，其能够在不增加风扇直径的同时增加旁路比，并且降低作用在发动机上的空气阻力，将由前风扇压缩的空气排出到大气的前风扇管道和向后排出的风扇导管将空气引入后风扇的方式设置成通过围绕核心发动机沿逆时针方向旋转来改变其横截面形状，使得前风扇管道和后风扇管道在位置处的横截面几何关系紧靠前风扇的后方，在风扇前方的前方风扇管道与后风扇管道之间的横截面几何关系被反转。

3. 发明申请

US20080075580A1 Turbofan jet engine 有权
标题翻译： Turbofan喷气发动机
公开(公告)号：US20080075580A1
公开(公告)日：2008-03-27
申请号：US11902564
申请日：2007-09-24
申请人： Ryoji Yanagi , Hisao Futamura , Hitoshi Fujiwara
发明人： Ryoji Yanagi , Hisao Futamura , Hitoshi Fujiwara
IPC分类号： F01N1/00
CPC分类号： F02K3/065 , B64D27/18 , B64D33/02 , B64D33/04 , B64D2033/026 , F02K3/075 , F02K3/077 , Y02T50/44 , Y02T50/671
摘要： To provide a turbofan jet engine for a supersonic aircraft, which enables a supersonic cruise with small additional drag due to engine installation while minimizing the jet noise at takeoff. In the turbofan jet engine, two fans, i.e., a front fan and an aft fan, are disposed, and an air inlet and an air outlet are provided on each of the front and aft fans, whereby at takeoff, air is introduced to each of the air inlets of the front and aft fans to drive the front and aft fans in parallel, and the air is then ejected from each of the outlets. On the other hand, during a supersonic cruise, an inlet of an aft fan duct is coupled to an outlet of a front fan duct, where external air is introduced only to an air inlet of the front fan duct and the air compressed through the front fan is fed to the aft fan duct and further compressed through the aft fan, and ejected from a nozzle, so that the front and aft fans are driven in series.
摘要翻译：为超音速飞机提供涡轮风扇喷气发动机，由于发动机安装，能够实现超短距离巡航，同时使起飞时的喷气噪声最小化。在涡轮风扇喷气发动机中，设置有两个风扇，即前风扇和后风扇，并且在前风扇和后风扇中的每一个上设置有空气入口和空气出口，由此在起飞时，空气被引入到每个的前风扇和后风扇的进气口并联驱动前后风扇，然后从每个出口排出空气。另一方面，在超音速巡航期间，后风扇通道的入口连接到前风扇通道的出口，其中外部空气仅被引入前风扇通道的空气入口，并且通过前部压缩的空气风扇被送入后风扇风管，并通过后风扇进一步压缩，并从喷嘴喷出，使得前后风扇被串联驱动。

4. 发明申请

US20090226297A1 HIGH BYPASS-RATIO TURBOFAN JET ENGINE 有权
标题翻译：高比例涡轮喷气式发动机
公开(公告)号：US20090226297A1
公开(公告)日：2009-09-10
申请号：US12392203
申请日：2009-02-25
申请人： Ryoji Yanagi , Hitoshi Fujiwara
发明人： Ryoji Yanagi , Hitoshi Fujiwara
IPC分类号： F01D25/24
CPC分类号： F02K3/065 , B64C7/02 , B64D29/02 , F02C7/04 , F05D2250/14 , Y02T50/671
摘要： To provide a turbofan jet engine which is capable of increasing the bypass ratio without increasing the fan diameter, and of reducing air resistance acting on the engine, a front fan duct that discharges air compressed by a front fan to the atmosphere and an aft fan duct that introduces air into an aft fan are disposed such as to change cross-sectional shapes thereof by rotating around a core engine in a counterclockwise direction, so that the cross-sectional geometric relationship between the front fan duct and the aft fan duct at a position immediately posterior to the front fan and a cross-sectional geometric relationship between the front fan duct and the aft fan duct at a position immediately anterior to the aft fan are inverted.
摘要翻译：为了提供一种涡轮风扇喷气发动机，其能够在不增加风扇直径的同时增加旁路比，并且降低作用在发动机上的空气阻力，将由前风扇压缩的空气排出到大气的前风扇管道和向后排出的风扇导管将空气引入后风扇的方式设置成通过围绕核心发动机沿逆时针方向旋转来改变其横截面形状，使得前风扇管道和后风扇管道在位置处的横截面几何关系紧靠前风扇的后方，在风扇前方的前方风扇管道与后风扇管道之间的截面几何关系被反转。

5. 发明授权

US12117748B2 Fixing device and image forming apparatus incorporating same 有权
公开(公告)号：US12117748B2
公开(公告)日：2024-10-15
申请号：US18142031
申请日：2023-05-02
申请人： Hitoshi Fujiwara
发明人： Hitoshi Fujiwara
IPC分类号： G03G15/20
CPC分类号： G03G15/2028 , G03G15/2064
摘要： A fixing device includes a first rotator, a second rotator, a heater, a separator, and a resistor. The second rotator is in contact with an outer circumferential surface of the first rotator to form a nip through which a recording medium bearing an unfixed image passes. The heater includes a heat generator and heats the first rotator. The separator is in contact with an outer circumferential surface of the first rotator and separates the recording medium passing through the nip from the first rotator. The resistor couples the second rotator and the separator to the ground.

6. 发明授权

US11966179B2 Fixing device and image forming apparatus incorporating same 有权
公开(公告)号：US11966179B2
公开(公告)日：2024-04-23
申请号：US17967908
申请日：2022-10-18
申请人： Hitoshi Fujiwara
发明人： Hitoshi Fujiwara
IPC分类号： G03G15/20
CPC分类号： G03G15/2053
摘要： A fixing device includes a first rotator, a second rotator, a heater, and a discharger. The first rotator includes a conductive first layer, a non-conductive second layer, and a conductive third layer. The first to third layers exist in an order of the first layer to the third layer from a center of the first rotator to an outside of the first rotator. The second rotator forms a nip between the first rotator and the second rotator. A recording medium bearing a toner image passes through the nip. The heater is disposed inside a loop of the second rotator and heats the second rotator. The discharger is in contact with the first layer and the third layer and removes electric charge from the first rotator.

7. 发明授权

US11543765B2 Fixing device and image forming apparatus incorporating same 有权
公开(公告)号：US11543765B2
公开(公告)日：2023-01-03
申请号：US17529306
申请日：2021-11-18
申请人： Hitoshi Fujiwara
发明人： Hitoshi Fujiwara
IPC分类号： G03G15/20 , G03G15/00
摘要： A fixing device includes a fixing rotator, a heater, a pressure rotator, a stay, a biasing member fixed to the stay, and a nip formation pad. The nip formation pad is supported by the stay, disposed inside the fixing rotator, and forms a nip. The nip formation pad includes at least one engaged portion at a position other than both ends of the nip formation pad or engaged portions at both ends of the nip formation pad. The at least one engaged portion engages an engaging portion in the stay to generate a first rotational moment. The engaged portions at both ends engage engaging portions in the stay to generate a second rotational moment. Each rotational moment is smaller than a rotational moment generated by engagement between an engaging portion in the stay and an engaged portion at only one end of the nip formation pad.

8. 发明授权

US10990049B2 Driver, fixing device, and image forming apparatus 有权
公开(公告)号：US10990049B2
公开(公告)日：2021-04-27
申请号：US16938116
申请日：2020-07-24
申请人： Hitoshi Fujiwara
发明人： Hitoshi Fujiwara
IPC分类号： G03G15/20 , G03G15/16
摘要： A driver includes a first rotator, a second rotator, a bearing, a housing, a drive gear, a first idler gear, a pivot member, and a second idler gear. The first idler gear is meshed with the drive gear. The pivot member rotates around a rotation center axis in the housing and includes an idler gear support portion rotatably holding the first idler gear. The second idler gear is meshed with the first idler gear and disposed on the rotation center axis of the pivot member. A rotation center of the pivot member is present in a region outside a circle having a diameter of 1.5×L and inside a circle having a diameter of 1.8×L around a rotation center of the first idler gear, when a distance between a rotation center of the first rotator and the rotation center of the first idler gear is L.

9. 发明授权

US10558154B1 Image forming apparatus incorporating pressing device 有权
公开(公告)号：US10558154B1
公开(公告)日：2020-02-11
申请号：US16521914
申请日：2019-07-25
申请人： Hiroshi Kajiyama , Naoki Iwaya , Hitoshi Fujiwara , Takuya Seshita , Takahiro Imada , Yoshiharu Takahashi , Natsuki Watanabe
发明人： Hiroshi Kajiyama , Naoki Iwaya , Hitoshi Fujiwara , Takuya Seshita , Takahiro Imada , Yoshiharu Takahashi , Natsuki Watanabe
IPC分类号： G03G15/20
摘要： An image forming apparatus includes a pressing device, an apparatus body, an opening body, and a vibration insulator. The pressing device housed in the apparatus body is configured to press a pressing body to a pressing target body. The opening body is configured to open and close to the apparatus body. The opening body presses a pressing target portion of the apparatus body, at a first pressing portion to cancel a pressing state of the pressing device by opening of the opening body and at a second pressing portion to enter the pressing state of the pressing device by closing of the opening body. The vibration insulator is provided on at least one of the pressing target portion and the second pressing portion, at a contact portion at which the pressing target portion contacts the second pressing portion when the first pressing portion cancels the pressing state.

10. 发明授权

US09740147B2 Separator, fixing device, and image forming apparatus 有权
公开(公告)号：US09740147B2
公开(公告)日：2017-08-22
申请号：US15158391
申请日：2016-05-18
申请人： Hitoshi Fujiwara , Tomoya Adachi , Tomohiko Fujii , Masahiro Samei , Yutaka Naitoh , Yoshiharu Takahashi , Yasuharu Kawarasaki , Kenta Kashiwagi , Kohta Sakaya
发明人： Hitoshi Fujiwara , Tomoya Adachi , Tomohiko Fujii , Masahiro Samei , Yutaka Naitoh , Yoshiharu Takahashi , Yasuharu Kawarasaki , Kenta Kashiwagi , Kohta Sakaya
IPC分类号： G03G15/20
CPC分类号： G03G15/2028
摘要： A separator for separating a recording medium from a fixing rotator includes a separation body including a front end and a conveyance path side face. The front end is disposed in proximity to an outer circumferential surface of the fixing rotator. The conveyance path side face faces a conveyance path where the recording medium is conveyed. At least one rotary separation aid projects beyond the conveyance path side face of the separation body toward the conveyance path. The rotary separation aid is rotated by the recording medium as the recording medium comes into contact with the rotary separation aid.

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