Patents by Inventor Shinichi Akao
Shinichi Akao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7249893Abstract: A rolling bearing and a rod end bearing are provided with a tilt mechanism and a rotary mechanism that are mutually independent. The tilt mechanism has a non-lubricated type spherical sliding bearing structure. The rotary mechanism has a rolling bearing structure which may or may not be sealed. By means of the non-lubricated type spherical sliding bearing structure, a tilt of the shaft center is made possible, and by means of a sealed rolling bearing structure, problems such as a lubrication oil leak are avoided, and carrying out high speed rotation and continuous rotation become possible. Because the sealed rolling bearing structure of the rotary mechanism does not call for a shaft center tilt function at all, the material of the seal can be chosen such that it emphasizes sliding resistance and high durability.Type: GrantFiled: February 21, 2003Date of Patent: July 31, 2007Assignee: Minebea Co. LtdInventors: Gen Sasaki, Shinichi Akao, Makoto Fujino
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Publication number: 20050160601Abstract: The material of the wall inside a hole in a housing is squeezed toward the center of the using a staking tool with a diameter larger than that of the hole. The material necessary for forming a locking section can be obtained from only a small part of the entire area of the wall of the hole. The amount of material necessary for the entire process is secured and the material is pressed so as to contact with an end face of the outer race using the staking tool, forming the locking section. Accordingly, the locking section provides sufficient strength. Also, since only the small part of the entire area of the wall is necessary as described above, there is no decrease in strength or deformation as to the thin housing.Type: ApplicationFiled: March 21, 2005Publication date: July 28, 2005Applicant: MINEBEA CO., LTD.Inventors: Gen Sasaki, Shinichi Akao, Shouji Takanishi
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Publication number: 20040194314Abstract: The material of the wall inside a hole in a housing is squeezed toward the center of the using a staking tool with a diameter larger than that of the hole. The material necessary for forming a locking section can be obtained from only a small part of the entire area of the wall of the hole. The amount of material necessary for the entire process is secured and the material is pressed so as to contact with an end face of the outer race using the staking tool, forming the locking section. Accordingly, the locking section provides sufficient strength. Also, since only the small part of the entire area of the wall is necessary as described above, there is no decrease in strength or deformation as to the thin housing.Type: ApplicationFiled: April 28, 2004Publication date: October 7, 2004Applicant: MINEBA CO., LTD.Inventors: Gen Sasaki, Shinichi Akao, Shouji Takanishi
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Patent number: 6675478Abstract: Balls are supported between the spherical inner race 5 and the outer race 6 which surrounds one potion of the inner race 6 through the resiliently transformable shell-like retainer 7. By making the inner race 5 and outer race 7, which influence the bearing precision greatly, to be formed in a unit respectively, the bearing precision is increased. For reference, although the retainer is divided, the retainer 7 bears merely the ball holding function and its transformation and the position relation in assembling state do not influence the bearing precision.Type: GrantFiled: December 7, 2001Date of Patent: January 13, 2004Assignee: Minebea Co., Ltd.Inventors: Gen Sasaki, Shinichi Akao, Kennosuke Kariya
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Publication number: 20030161563Abstract: A rolling bearing and a rod end bearing are provided with a tilt mechanism and a rotary mechanism that are mutually independent. The tilt mechanism has a non-lubricated type spherical sliding bearing structure. The rotary mechanism has a rolling bearing structure which may or may not be sealed. By means of the non-lubricated type spherical sliding bearing structure, a tilt of the shaft center is made possible, and by means of a sealed rolling bearing structure, problems such as a lubrication oil leak are avoided, and carrying out high speed rotation and continuous rotation become possible. Because the sealed rolling bearing structure of the rotary mechanism does not call for a shaft center tilt function at all, the material of the seal can be chosen such that it emphasizes sliding resistance and high durability.Type: ApplicationFiled: February 21, 2003Publication date: August 28, 2003Applicant: Minebea Co., Ltd.Inventors: Gen Sasaki, Shinichi Akao, Makoto Fujino
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Publication number: 20030084572Abstract: By the contraction process in which the contraction die is made to displace a pair of inner spherical surfaces in the direction of approaching each other to deform plastically the outer race 1 in such a manner as the out race 1 is followed along the spherical surface 2a of the inner race 2. And the releasing process in which, by a releasing device comprising a plurality of rollers, the outer race is rotated while the peripheral surface 1b of the outer race 1 deformed plastically being pressed by a plurality of the rollers to release the internal stress of the outer race 1, the spherical bearing wholly made of titanium alloy is formed.Type: ApplicationFiled: October 10, 2002Publication date: May 8, 2003Applicant: Minebea Co., Ltd.Inventors: Gen Sasaki, Shinichi Akao
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Patent number: 6467958Abstract: Balls are supported between the spherical inner race (5) and the outer race (6) which surrounds one potion of the inner race (6)through the resiliently transformable shell-like retainer (7). By making the inner race (5) and outer race (7), which influence the bearing precision greatly, to be formed in a unit respectively, the bearing precision is increased. For reference, although the retainer is divided, the retainer (7)bears merely the ball holding function and its transformation and the position relation in assembling state do not influence the bearing precision.Type: GrantFiled: February 23, 2000Date of Patent: October 22, 2002Assignee: Minebea Co., Ltd.Inventors: Gen Sasaki, Shinichi Akao, Kennosuke Kariya
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Publication number: 20020095790Abstract: The material of the wall inside a hole in a housing is squeezed toward the center of the using a staking tool with a diameter larger than that of the hole. The material necessary for forming a locking section can be obtained from only a small part of the entire area of the wall of the hole. The amount of material necessary for the entire process is secured and the material is pressed so as to contact with an end face of the outer race using the staking tool, forming the locking section. Accordingly, the locking section provides sufficient strength. Also, since only the small part of the entire area of the wall is necessary as described above, there is no decrease in strength or deformation as to the thin housing.Type: ApplicationFiled: January 18, 2002Publication date: July 25, 2002Applicant: MINEBEA CO., LTD.Inventors: Gen Sasaki, Shinichi Akao, Shouji Takanishi
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Publication number: 20020073547Abstract: By the contraction process in which the contraction die is made to displace a pair of inner spherical surfaces in the direction of approaching each other to deform plastically the outer race 1 in such a manner as the out race 1 is followed along the spherical surface 2a of the inner race 2. And the releasing process in which, by a releasing device comprising a plurality of rollers, the outer race is rotated while the peripheral surface 1b of the outer race 1 deformed plastically being pressed by a plurality of the rollers to release the internal stress of the outer race 1, the spherical bearing wholly made of titanium alloy is formed.Type: ApplicationFiled: August 31, 2001Publication date: June 20, 2002Applicant: MINEBEA CO., LTD.Inventors: Gen Sasaki, Shinichi Akao
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Publication number: 20020037121Abstract: Balls are supported between the spherical inner race 5 and the outer race 6 which surrounds one potion of the inner race 6 through the resiliently transformable shell-like retainer 7. By making the inner race 5 and outer race 7, which influence the bearing precision greatly, to be formed in a unit respectively, the bearing precision is increased. For reference, although the retainer is divided, the retainer 7 bears merely the ball holding function and its transformation and the position relation in assembling state do not influence the bearing precision.Type: ApplicationFiled: December 7, 2001Publication date: March 28, 2002Applicant: Minebea Co. Ltd.Inventors: Gen Sasaki, Shinichi Akao, Kennosuke Kariya
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Patent number: 6349470Abstract: On the periphery surface of the outer race, the stepped portion is formed, and on one side of the race retention hole formed on the housing, a screw portion is provided coaxially with the race retention hole, in which the setscrew is screwed and tightened. Retention of the front surface of the setscrew makes the end face of the stepped portion, pressed against the snap ring retained with the annular groove, formed on the race retention hole. Since the outer race is clamped by the setscrew and the snap ring and the gap between the end face of the outer race and the setscrew, and the snap ring becomes null, the outer race is securely retained in the axial direction.Type: GrantFiled: June 27, 2000Date of Patent: February 26, 2002Assignee: Minebea Co., Ltd.Inventors: Gen Sasaki, Shinichi Akao, Kennosuke Kariya
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Patent number: 6325544Abstract: On one side of the race retention hole 2, a screw portion 3 is formed, and on one side of the periphery surface of the outer race 4 an outer conical portion 5 is formed, and with the race retention hole 2, the periphery surface of the outer race 4 supporting the spherical surface 9a of the outer race 9 is retained, the stopping screw 8 is formed on with the inner conical portion 7 to be fit with the periphery surface 5a of the outer conical portion 5 is screwed in the screw portion 3 and tightened. Thus, by tightening the stopping screw 8, the periphery surface 5a of the outer conical portion 5 is pressed with the inner circumference 7a of the inner conical portion 7 and the contact surface pressure between the inner circumference surface 4b of the outer race 4 and the spherical surface 9a of the inner race 9 is increased, so that by regulating the tightening force of the stopping screw 8 the sliding torque of the spherical bearing is easily adjusted.Type: GrantFiled: July 31, 2000Date of Patent: December 4, 2001Assignee: Minebea Co., Ltd.Inventors: Gen Sasaki, Shinichi Akao, Kennosuke Kariya
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Patent number: 5074086Abstract: A damping device has a liquid vessel into which the liquid is injected having the flattening wave motion water surface formed in such a manner that the wave motion direction of the wave motion water surface is a strecher one, damping members are provided in order to damp the sloshing of liquid in the liquid vessel, and wave dissipation devices are disposed at the portion which isn't always soaked in liquid in the liquid vessel. Accordingly, the vibration in a construction occurring by wind, earthquake and the like is absorbed by means of viscosity resistance occurring between liquid and damping member, and the vibration is restricted. Moreover, damping performance can be efficiently exercised by providing various kinds of installation forms.Type: GrantFiled: March 14, 1990Date of Patent: December 24, 1991Assignee: Mitsui Kensetsu Kabushiki KaishaInventors: Toshiyuki Noji, Hidetoshi Yoshida, Eiji Tatsumi, Shinichi Akao, Hideyuki Kosaka
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Patent number: 4987710Abstract: A damping device has a liquid vessel into which the liquid is injected having the flattening wave motion water surface formed in such a manner that the wave motion direction of the wave motion water surface is a strecher one, damping members are provided in order to damp the sloshing of liquid in the liquid vessel, and wave dissipation devices are disposed at the portion which isn't always soaked in liquid in the liquid vessel. Accordingly, the vibration in a construction occurring by wind, earthquake and the like is absorbed by means of viscosity resistance occurring between liquid and damping member, and the vibration is restricted. Moreover, damping performance can be efficiently exercised by providing various kinds of installation forms.Type: GrantFiled: November 21, 1989Date of Patent: January 29, 1991Assignee: Mitsui Kensetsu Kabushiki KaishaInventors: Toshiyuki Noji, Hidetoshi Yoshida, Eiji Tatsumi, Shinichi Akao, Hideyuki Kosaka
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Patent number: 4987711Abstract: A damping device has a liquid vessel into which the liquid is injected having the flattening wave motion water surface formed in such a manner that the wave motion direction of the wave motion water surface is a strecher one, damping members are provided in order to damp the sloshing of liquid in the liquid vessel, and wave dissipation devices are disposed at the portion which isn't always soaked in liquid in the liquid vessel. Accordingly, the vibration in a construction occurring by wind, earthquake and the like is absorbed by means of viscosity resistence occurring between liquid and damping member, and the vibration is restricted. Moreover, damping performance can be efficiently exercised by providing various kinds of installation forms.Type: GrantFiled: March 14, 1990Date of Patent: January 29, 1991Assignee: Mitsui Kensetsu Kabushiki KaishaInventors: Toshiyuki Noji, Hidetoshi Yoshida, Eiji Tatsumi, Shinichi Akao, Hideyuki Kosaka
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Patent number: 4953330Abstract: A damping device has a liquid vessel into which a liquid is injected having a wave motion water surface such that the wave motion direction of the wave motion of the water surface is in the elongated direction of the vessel. Damping members are provided in order to damp the sloshing of liquid in the liquid vessel, and wave dissipation devices are disposed at a portion not always soaked in liquid in the liquid vessel. Accordingly, the vibration of a construction occurring by wind, earthquake and the like is absorbed by the viscosity resistance occurring between the liquid and the damping members, and the vibration is restricted. Moreover, damping performance can be efficiently exercised by providing various installation arrangements.Type: GrantFiled: July 8, 1988Date of Patent: September 4, 1990Assignee: Mitsui Kensetsu Kabushiki KaishaInventors: Toshiyuki Noji, Hidetoshi Yoshida, Eiji Tatsumi, Shinichi Akao, Hideyuki Kosaka
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Patent number: 4951441Abstract: A damping device has a liquid vessel into which a liquid is injected having a wave motion water surface such that the wave motion direction of the wave motion of the water surface is in the elongated direction of the vessel. Damping members are provided in order to damp the sloshing of liquid in the liquid vessel, and wave dissipation devices are disposed at a portion not always soaked in liquid in the liquid vessel. Accordingly, the vibration of a construction occurring by wind, earthquake and the like is absorbed by the viscosity resistance occurring between the liquid and the damping members, and the vibration is restricted. Moreover, damping performance can be efficiently exercised by providing various installation arrangements.Type: GrantFiled: June 2, 1989Date of Patent: August 28, 1990Assignee: Mitshi Kensetsu Kabushiki KaishaInventors: Toshiyuki Noji, Hidetoshi Yoshida, Eiji Tatsumi, Shinichi Akao, Hideyuki Kosaka
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Patent number: D443285Type: GrantFiled: December 30, 1999Date of Patent: June 5, 2001Assignee: Minebea Co., Ltd.Inventors: Gen Sasaki, Shinichi Akao
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Patent number: D447157Type: GrantFiled: December 30, 1999Date of Patent: August 28, 2001Assignee: Minebea Co., Ltd.Inventors: Gen Sasaki, Shinichi Akao
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Patent number: D459732Type: GrantFiled: December 30, 1999Date of Patent: July 2, 2002Assignee: Minebea Co. Ltd.Inventors: Gen Sasaki, Shinichi Akao