Patents by Inventor Atsuyuki Morishita
Atsuyuki Morishita 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: 7458785Abstract: A supply passage is formed in a rotary shaft along the axis thereof. An expansion passage is formed in the rotary shaft in such a way as to be led to the supply passage. A pair of fluid passages are formed in the rotary shaft in such a way as to communicate with the expansion passage. The fluid passages extend in a direction orthogonal to the axis and the outlet ports of the fluid passages are open to the outer surface of the rotary shaft. The fluid passages extend from the expansion passage to a control pressure chamber, penetrating through the rotary shaft.Type: GrantFiled: February 2, 2004Date of Patent: December 2, 2008Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Tomohiro Murakami, Sokichi Hibino, Atsuyuki Morishita
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Patent number: 7186096Abstract: A swash plate type variable displacement compressor includes a cylinder block defining a cylinder bore. A housing is fixed to the cylinder block and defines a crank chamber. A drive shaft is rotatably supported by the housing and the cylinder block. A swash plate is supported by the drive shaft in the crank chamber and is inclinable with respect to the axis of the drive shaft. A piston is accommodated in the cylinder bore so as to define a compression chamber in the cylinder bore and is coupled to the swash plate. A control mechanism includes a bleed passage for controlling the pressure in the crank chamber. The compressor is formed such that lubricating oil in the crank chamber is discharged into at least one of the suction chamber, the discharge chamber and the compression chamber while the inclination angle of the swash plate is substantially a maximum inclination angle.Type: GrantFiled: August 28, 2003Date of Patent: March 6, 2007Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Sokichi Hibino, Tetsuhiko Fukanuma, Hiroaki Kayukawa, Eiji Tokunaga, Atsuyuki Morishita, Tomohiro Murakami, Yoshio Kimoto, Yoshitami Kondo
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Patent number: 6979182Abstract: A piston type compressor includes a housing forming a cylinder bore. A drive shaft is supported by the housing. A cam plate is coupled to the drive shaft and is rotated by the rotation of the drive shaft. A piston is accommodated in the cylinder bore and is coupled to the cam plate. The rotation of the cam plate is converted into the reciprocating movement of the piston. In accordance with the reciprocating movement of the piston, gas is introduced into the cylinder bore, is compressed and is discharged from the cylinder bore. Compression reactive force is generated in compressing the gas by the piston, is transmitted to the housing through a compression reactive force transmission path and is received by the housing. A vibration damping member is made of a predetermined vibration damping alloy and is placed at least one location along the compression reactive force transmission path.Type: GrantFiled: February 3, 2004Date of Patent: December 27, 2005Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Shiro Hayashi, Hideki Mitzutani, Atsuyuki Morishita, Hiroaki Kayukawa
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Patent number: 6969241Abstract: A piston type compressor includes a housing forming a cylinder bore. A drive shaft is supported by the housing. A cam plate is coupled to the drive shaft and is rotated by the rotation of the drive shaft. A piston is accommodated in the cylinder bore and is coupled to the cam plate. The rotation of the cam plate is converted into the reciprocating movement of the piston. In accordance with the reciprocating movement of the piston, gas is introduced into the cylinder bore, is compressed and is discharged from the cylinder bore. Compression reactive force is generated in compressing the gas by the piston, is transmitted to the housing through a compression reactive force transmission path and is received by the housing. A vibration damping member is made of a predetermined vibration damping alloy and is placed at least one location along the compression reactive force transmission path.Type: GrantFiled: January 30, 2004Date of Patent: November 29, 2005Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Shiro Hayashi, Hideki Mizutani, Atsuyuki Morishita, Hiroaki Kayukawa
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Publication number: 20050196291Abstract: A piston compressor includes a rotary valve having a suction guide hole. A plurality of introducing passages are formed in a cylinder block to connect compression chambers to the rotary valve. The inner circumferential surface of each cylinder bore has a suction auxiliary recess, which is connected to the outlet of the corresponding introducing passage in the circumferential direction of the cylinder bore at the end of the cylinder bore facing a valve assembly. Therefore, the compressor reduces suction resistance of gas at the beginning of the suction stroke without enlarging introducing passages formed in the cylinder block.Type: ApplicationFiled: March 2, 2005Publication date: September 8, 2005Inventors: Yoshinori Inoue, Hisato Kawamura, Shigeki Kawachi, Masanori Masuda, Yoshio Kimoto, Sokichi Hibino, Shiro Hayashi, Atsuyuki Morishita, Tomohiro Murakami
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Patent number: 6932582Abstract: A piston type compressor includes a housing forming a cylinder bore. A drive shaft is supported by the housing. A cam plate is coupled to the drive shaft and is rotated by the rotation of the drive shaft. A piston is accommodated in the cylinder bore and is coupled to the cam plate. The rotation of the cam plate is converted into the reciprocating movement of the piston. In accordance with the reciprocating movement of the piston, gas is introduced into the cylinder bore, is compressed and is discharged from the cylinder bore. Compression reactive force is generated in compressing the gas by the piston, is transmitted to the housing through a compression reactive force transmission path and is received by the housing. A vibration damping member is made of a predetermined vibration damping alloy and is placed at least one location along the compression reactive force transmission path.Type: GrantFiled: January 30, 2004Date of Patent: August 23, 2005Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Shiro Hayashi, Hideki Mizutani, Atsuyuki Morishita, Hiroaki Kayukawa
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Publication number: 20050031459Abstract: In a piston type compressor, a piston is respectively accommodated in a plurality of cylinder bores arranged around a rotary shaft. A rotary valve has a suction guiding passage for introducing gas from a suction pressure region into a compression chamber when in communication therebetween. A suction timing control passage is formed in the rotary valve and is constantly in communication with the suction pressure region at first end, the suction timing control passage precedes the suction guiding passage communicating with the compression chamber at second end. A suction timing control valve is arranged in the control passage, having a valve body which opens and closes the control passage in response to difference between force resulting from pressure on a side of the suction pressure region to open the valve body and force resulting from pressure on a side of the compression chamber to close the valve body.Type: ApplicationFiled: July 2, 2004Publication date: February 10, 2005Inventors: Sokichi Hibino, Atsuyuki Morishita, Tomohiro Murakami, Tetsuhiko Fukanuma, Hiroaki Kayukawa, Hiroshi Kubo
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Publication number: 20050031456Abstract: A swash plate type variable displacement compressor includes a cylinder block defining a cylinder bore. A housing is fixed to the cylinder block and defines a crank chamber. A drive shaft is rotatably supported by the housing and the cylinder block. A swash plate is supported by the drive shaft in the crank chamber and is inclinable with respect to the axis of the drive shaft. A piston is accommodated in the cylinder bore so as to define a compression chamber in the cylinder bore and is coupled to the swash plate. A control mechanism includes a bleed passage for controlling the pressure in the crank chamber. The compressor is formed such that lubricating oil in the crank chamber is discharged into at least one of the suction chamber, the discharge chamber and the compression chamber while the inclination angle of the swash plate is substantially a maximum inclination angle.Type: ApplicationFiled: August 28, 2003Publication date: February 10, 2005Inventors: Sokichi Hibino, Tetsuhiko Fukanuma, Hiroaki Kayukawa, Eiji Tokunaga, Atsuyuki Morishita, Tomohiro Murakami, Yoshio Kimoto, Yoshitami Kondo
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Publication number: 20040247455Abstract: A gasket is provided between a cylinder block and a valve plate. By providing a through hole at a position near the center of the gasket, bending moment acting on the cylinder block is reduced, and hence deformation of the cylinder block is restrained. As a result, reciprocating motion of a piston and rotational motion of a rotary valve are performed smoothly.Type: ApplicationFiled: March 25, 2004Publication date: December 9, 2004Inventors: Yoshio Kimoto, Sokichi Hibino, Yoshitami Kondo, Atsuyuki Morishita, Tomohiro Murakami
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Publication number: 20040206235Abstract: A piston type compressor includes a housing forming a cylinder bore. A drive shaft is supported by the housing. A cam plate is coupled to the drive shaft and is rotated by the rotation of the drive shaft. A piston is accommodated in the cylinder bore and is coupled to the cam plate. The rotation of the cam plate is converted into the reciprocating movement of the piston. In accordance with the reciprocating movement of the piston, gas is introduced into the cylinder bore, is compressed and is discharged from the cylinder bore. Compression reactive force is generated in compressing the gas by the piston, is transmitted to the housing through a compression reactive force transmission path and is received by the housing. A vibration damping member is made of a predetermined vibration damping alloy and is placed at least one location along the compression reactive force transmission path.Type: ApplicationFiled: February 3, 2004Publication date: October 21, 2004Inventors: Shiro Hayashi, Hideki Mitzutani, Atsuyuki Morishita, Hiroaki Kayukawa
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Publication number: 20040182236Abstract: A piston type compressor includes a housing forming a cylinder bore. A drive shaft is supported by the housing. A cam plate is coupled to the drive shaft and is rotated by the rotation of the drive shaft. A piston is accommodated in the cylinder bore and is coupled to the cam plate. The rotation of the cam plate is converted into the reciprocating movement of the piston. In accordance with the reciprocating movement of the piston, gas is introduced into the cylinder bore, is compressed and is discharged from the cylinder bore. Compression reactive force is generated in compressing the gas by the piston, is transmitted to the housing through a compression reactive force transmission path and is received by the housing. A vibration damping member is made of a predetermined vibration damping alloy and is placed at least one location along the compression reactive force transmission path.Type: ApplicationFiled: January 30, 2004Publication date: September 23, 2004Inventors: Shiro Hayashi, Hideki Mizutani, Atsuyuki Morishita, Hiroaki Kayukawa
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Publication number: 20040184924Abstract: A piston type compressor includes a housing forming a cylinder bore. A drive shaft is supported by the housing. A cam plate is coupled to the drive shaft and is rotated by the rotation of the drive shaft. A piston is accommodated in the cylinder bore and is coupled to the cam plate. The rotation of the cam plate is converted into the reciprocating movement of the piston. In accordance with the reciprocating movement of the piston, gas is introduced into the cylinder bore, is compressed and is discharged from the cylinder bore. Compression reactive force is generated in compressing the gas by the piston, is transmitted to the housing through a compression reactive force transmission path and is received by the housing. A vibration damping member is made of a predetermined vibration damping alloy and is placed at least one location along the compression reactive force transmission path.Type: ApplicationFiled: January 30, 2004Publication date: September 23, 2004Inventors: Shiro Hayashi, Hideki Mizutani, Atsuyuki Morishita, Hiroaki Kayukawa
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Publication number: 20040170504Abstract: A supply passage is formed in a rotary shaft along the axis thereof. An expansion passage is formed in the rotary shaft in such a way as to be led to the supply passage. A pair of fluid passages are formed in the rotary shaft in such a way as to communicate with the expansion passage. The fluid passages extend in a direction orthogonal to the axis and the outlet ports of the fluid passages are open to the outer surface of the rotary shaft. The fluid passages extend from the expansion passage to a control pressure chamber, penetrating through the rotary shaft.Type: ApplicationFiled: February 2, 2004Publication date: September 2, 2004Inventors: Tomohiro Murakami, Sokichi Hibino, Atsuyuki Morishita
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Patent number: 6672844Abstract: A variable displacement compressor has a control valve for controlling the displacement of the compressor. When the pressure in a discharge chamber of the compressor (discharge pressure) is equal to or higher than a first threshold value, a controller executes a limiting control for limiting the discharge pressure. During the limiting control, the controller gradually decreases a duty ratio, which is sent to the control valve, such that the displacement of the compressor is gradually decreased. When the duty ratio is decreased to a reference duty ratio, the controller sets the duty ratio to zero %. As a result, the compressor displacement is minimized and the discharge pressure is lowered. Therefore, the pipes of an external refrigerant circuit does not receive excessive load based on high discharge pressure.Type: GrantFiled: November 9, 2001Date of Patent: January 6, 2004Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Tetsuhiko Fukanuma, Atsuyuki Morishita, Tomohiko Yokono
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Patent number: 6524079Abstract: In a variable-capacity swash-plate type compressor, which can vary the outlet capacity by controlling an inclination angle of a swash plate, the swash plate is aligned by contacting a washer (19) with a tapered surface to the swash plate (18). Thus, in a case where a compression operation is not carried out or in a case where a compression operation is carried out at a small outlet capacity regarded as zero substantially, the noises, etc., which generate between the swash plate and a driving shaft (6), are inhibited.Type: GrantFiled: April 12, 2001Date of Patent: February 25, 2003Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Kazuya Kimura, Tetsuhiko Fukanuma, Masakazu Murase, Minoru Mera, Atsuyuki Morishita, Shingo Kumazawa
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Publication number: 20030031569Abstract: A piston type compressor includes a housing forming a cylinder bore. A drive shaft is supported by the housing. A cam plate is coupled to the drive shaft and is rotated by the rotation of the drive shaft A piston is accommodated in the cylinder bore and is coupled to the cam plate. The rotation of the cam plate is converted into the reciprocating movement of the piston. In accordance with the reciprocating movement of the piston, gas is introduced into the cylinder bore, is compressed and is discharged from the cylinder bore. Compression reactive force is generated in compressing the gas by the piston, is transmitted to the housing through a compression reactive force transmission path and is received by the housing. A vibration damping member is made of a predetermined vibration damping alloy and is placed at least one location along the compression reactive force transmission path.Type: ApplicationFiled: July 16, 2002Publication date: February 13, 2003Inventors: Shiro Hayashi, Hideki Mizutani, Atsuyuki Morishita, Hiroaki Kayukawa
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Patent number: 6435848Abstract: A variable capacity type compressor has a swash plate, pistons reciprocating in the cylinder bores, a suction chamber, and a discharge chamber. A check valve arranged in the compressor. The check valve has a valve seat member having a flow passage and a valve seat, a case attached to the valve seat member, and a valve element arranged in the case for cooperation with the valve seat. The case has a communication hole formed therethrough to allow the gas to flow from the flow passage through the communication hole to the outside circuit. The case has a damper chamber formed therein on the back side of the valve element to damp vibration of the valve element.Type: GrantFiled: May 31, 2000Date of Patent: August 20, 2002Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Kazuhiko Minami, Hiroaki Kayukawa, Kazuya Kimura, Atsuyuki Morishita
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Publication number: 20020094278Abstract: A variable displacement compressor has a control valve for controlling the displacement of the compressor. When the pressure in a discharge chamber of the compressor (discharge pressure) is equal to or higher than a first threshold value, a controller executes a limiting control for limiting the discharge pressure. During the limiting control, the controller gradually decreases a duty ratio, which is sent to the control valve, such that the displacement of the compressor is gradually decreased. When the duty ratio is decreased to a reference duty ratio, the controller sets the duty ratio to zero %. As a result, the compressor displacement is minimized and the discharge pressure is lowered. Therefore, the pipes of an external refrigerant circuit does not receive excessive load based on high discharge pressure.Type: ApplicationFiled: November 9, 2001Publication date: July 18, 2002Inventors: Tetsuhiko Fukanuma, Atsuyuki Morishita, Tomohiko Yokono
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Patent number: 6419467Abstract: In the suction valve structure of the piston type compressor of the present invention, the primary suction valve 38 is a flexible deforming valve composed of a deforming section 381, which is supported and bent by a cantilever method, and a closing section 382 which connects with a forward end of the deforming section 381 and closes the primary suction port 21. The auxiliary suction valve 39 is a flexible deforming valve composed of a deforming section 391, which is supported-and bent by a cantilever method, and a closing section 392 which connects with a forward end of the deforming section 391 and closes the auxiliary suction port 22. In the present invention, the length of the deforming section 381 of the primary suction valve 38 is approximately the same as that of the deforming section 391 of the auxiliary suction valve 39, however, the width of the deforming section 381 of the primary suction valve 38 is made larger than that of the deforming section 391 of the auxiliary suction valve 39.Type: GrantFiled: May 16, 2000Date of Patent: July 16, 2002Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Muneharu Murase, Atsuyuki Morishita, Masakazu Murase, Katsuya Ohyama, Masahiro Kawaguchi
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Patent number: 6290470Abstract: A shaft sealing assembly for a compressor includes first and second lip rings, each of which is disposed around a shaft of a compressor to provide sealing. A retainer ring is disposed between the two lip rings to retain the shape of the first lip ring, which serves to allow leakage of fluid when the shaft rotates and prevent the leakage when the shaft is stopped. The three rings are held together at the radial portions of the rings. Each of the radial portions of the two lip rings extends outwardly beyond the radial portion of the retainer ring, providing an annular contact area. The two lip rings resiliently contact one another in the contact area. An annular projection is provided on at least one of the lip rings in the contact area to ensure the sealing.Type: GrantFiled: September 30, 1999Date of Patent: September 18, 2001Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Eagle Industry Co., Ltd.Inventors: Takuya Okuno, Masahiro Kawaguchi, Masanori Sonobe, Atsuyuki Morishita, Keiichi Chiba