Patents by Inventor Tomohiro Shirahata
Tomohiro Shirahata 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).
-
Patent number: 8171631Abstract: A positioning system used in assembling a scroll-type fluid machine exerts a horizontal thrust on a stationary scroll in a direction opposite to a direction in which an eccentric shaft end portion formed at one end of a rotary shaft is oriented while turning the rotary shaft, and determines an orbital path of the stationary scroll by measuring horizontal displacements thereof. While exerting the horizontal thrust, the positioning system incrementally presses the stationary scroll against a guide frame until a stable orbital path of the stationary scroll is obtained. When the orbital path is judged to be stable, the positioning system determines a fixing point on which the stationary scroll should be fixedly centered with respect to the guide frame, so that a scroll wrap of the stationary scroll and a scroll wrap of an orbiting scroll are correctly intermeshed, forming a series of pockets therebetween.Type: GrantFiled: April 4, 2011Date of Patent: May 8, 2012Assignee: Mitsubishi Electric CorporationInventors: Shinobu Kokubun, Toshiaki Iwasaki, Tomohiro Shirahata
-
Patent number: 8166654Abstract: A positioning system used in assembling a scroll-type fluid machine exerts a horizontal thrust on a stationary scroll in a direction opposite to a direction in which an eccentric shaft end portion formed at one end of a rotary shaft is oriented while turning the rotary shaft, and determines an orbital path of the stationary scroll by measuring horizontal displacements thereof. While exerting the horizontal thrust, the positioning system incrementally presses the stationary scroll against a guide frame until a stable orbital path of the stationary scroll is obtained. When the orbital path is judged to be stable, the positioning system determines a fixing point on which the stationary scroll should be fixedly centered with respect to the guide frame, so that a scroll wrap of the stationary scroll and a scroll wrap of an orbiting scroll are correctly intermeshed, forming a series of pockets therebetween.Type: GrantFiled: April 4, 2011Date of Patent: May 1, 2012Assignee: Mitsubishi Electric CorporationInventors: Shinobu Kokubun, Toshiaki Iwasaki, Tomohiro Shirahata
-
Patent number: 8166655Abstract: A positioning system used in assembling a scroll-type fluid machine exerts a horizontal thrust on a stationary scroll in a direction opposite to a direction in which an eccentric shaft end portion formed at one end of a rotary shaft is oriented while turning the rotary shaft, and determines an orbital path of the stationary scroll by measuring horizontal displacements thereof. While exerting the horizontal thrust, the positioning system incrementally presses the stationary scroll against a guide frame until a stable orbital path of the stationary scroll is obtained. When the orbital path is judged to be stable, the positioning system determines a fixing point on which the stationary scroll should be fixedly centered with respect to the guide frame, so that a scroll wrap of the stationary scroll and a scroll wrap of an orbiting scroll are correctly intermeshed, forming a series of pockets therebetween.Type: GrantFiled: April 4, 2011Date of Patent: May 1, 2012Assignee: Mitsubishi Electric CorporationInventors: Shinobu Kokubun, Toshiaki Iwasaki, Tomohiro Shirahata
-
Patent number: 8006378Abstract: A positioning system used in assembling a scroll-type fluid machine includes a radial thrust mechanism driving motor for turning a radial thrust mechanism in synchronism with rotational phase of a rotary shaft, a vertical pressing mechanism for producing a vertical pressing force for pressing a stationary scroll against a frame, a displacement sensor for measuring horizontal displacements of a stationary scroll retaining mechanism from at least two directions, a first processor for calculating an orbital path of the stationary scroll from obtained measurement values, a second processor for evaluating stability of the orbital path of the stationary scroll based on vertical pressing force data and the orbital path of the stationary scroll, and a third processor for calculating a fixing point on which the stationary scroll is to be fixedly centered with respect to the frame when the orbital path of the stationary scroll is judged to be stable.Type: GrantFiled: July 26, 2006Date of Patent: August 30, 2011Assignee: Mitsubishi Electric CorporationInventors: Shinobu Kokubun, Toshiaki Iwasaki, Tomohiro Shirahata
-
Publication number: 20110197442Abstract: A positioning system used in assembling a scroll- type fluid machine exerts a horizontal thrust on a stationary scroll in a direction opposite to a direction in which an eccentric shaft end portion formed at one end of a rotary shaft is oriented while turning the rotary shaft, and determines an orbital path of the stationary scroll by measuring horizontal displacements thereof. While exerting the horizontal thrust, the positioning system incrementally presses the stationary scroll against a guide frame until a stable orbital path of the stationary scroll is obtained. When the orbital path is judged to be stable, the positioning system determines a fixing point on which the stationary scroll should be fixedly centered with respect to the guide frame, so that a scroll wrap of the stationary scroll and a scroll wrap of an orbiting scroll are correctly intermeshed, forming a series of pockets therebetween.Type: ApplicationFiled: April 4, 2011Publication date: August 18, 2011Applicant: Mitsubishi Electric CorporationInventors: Shinobu KOKUBUN, Toshiaki Iwasaki, Tomohiro Shirahata
-
Publication number: 20110197425Abstract: A positioning system used in assembling a scroll-type fluid machine exerts a horizontal thrust on a stationary scroll in a direction opposite to a direction in which an eccentric shaft end portion formed at one end of a rotary shaft is oriented while turning the rotary shaft, and determines an orbital path of the stationary scroll by measuring horizontal displacements thereof. While exerting the horizontal thrust, the positioning system incrementally presses the stationary scroll against a guide frame until a stable orbital path of the stationary scroll is obtained. When the orbital path is judged to be stable, the positioning system determines a fixing point on which the stationary scroll should be fixedly centered with respect to the guide frame, so that a scroll wrap of the stationary scroll and a scroll wrap of an orbiting scroll are correctly intermeshed, forming a series of pockets therebetween.Type: ApplicationFiled: April 4, 2011Publication date: August 18, 2011Applicant: Mitsubishi Electric CorporationInventors: Shinobu KOKUBUN, Toshiaki Iwasaki, Tomohiro Shirahata
-
Publication number: 20110197424Abstract: A positioning system used in assembling a scroll-type fluid machine exerts a horizontal thrust on a stationary scroll in a direction opposite to a direction in which an eccentric shaft end portion formed at one end of a rotary shaft is oriented while turning the rotary shaft, and determines an orbital path of the stationary scroll by measuring horizontal displacements thereof. While exerting the horizontal thrust, the positioning system incrementally presses the stationary scroll against a guide frame until a stable orbital path of the stationary scroll is obtained. When the orbital path is judged to be stable, the positioning system determines a fixing point on which the stationary scroll should be fixedly centered with respect to the guide frame, so that a scroll wrap of the stationary scroll and a scroll wrap of an orbiting scroll are correctly intermeshed, forming a series of pockets therebetween.Type: ApplicationFiled: April 4, 2011Publication date: August 18, 2011Applicant: Mitsubishi Electric CorporationInventors: Shinobu KOKUBUN, Toshiaki Iwasaki, Tomohiro Shirahata
-
Publication number: 20070033801Abstract: A positioning system used in assembling a scroll-type fluid machine exerts a horizontal thrust on a stationary scroll in a direction opposite to a direction in which an eccentric shaft end portion formed at one end of a rotary shaft is oriented while turning the rotary shaft, and determines an orbital path of the stationary scroll by measuring horizontal displacements thereof. While exerting the horizontal thrust, the positioning system incrementally presses the stationary scroll against a guide frame until a stable orbital path of the stationary scroll is obtained. When the orbital path is judged to be stable, the positioning system determines a fixing point on which the stationary scroll should be fixedly centered with respect to the guide frame, so that a scroll wrap of the stationary scroll and a scroll wrap of an orbiting scroll are correctly intermeshed, forming a series of pockets therebetween.Type: ApplicationFiled: July 26, 2006Publication date: February 15, 2007Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shinobu Kokubun, Toshiaki Iwasaki, Tomohiro Shirahata