Patents by Inventor Masaharu Sakai
Masaharu Sakai 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: 7801419Abstract: A small-size digital device requires preferable operability and user-friendliness of the user interface. In a multimedia reproduction device (10), an operation unit (40) acquires an instruction concerning content reproduction via a user operation. A read-out unit (44) reads out a content from an external recording medium mounted as a content data storage area. A storage unit (80) holds data on a plurality of function icons symbolizing a plurality of content reproduction function types and data on a plurality of media icons symbolizing the external recording medium types. A display processing unit (46) processes menu screen display and content reproduction. A menu control unit (48) generates image data on a menu screen where a plurality of function icons and a plurality of media icons are arranged two-dimensionally according to a user instruction.Type: GrantFiled: April 1, 2005Date of Patent: September 21, 2010Assignee: Sony Computer Entertainment Inc.Inventors: Masaharu Sakai, Kojiro Umemura, Shuji Hiramatsu, Ryuji Nakayama
-
Publication number: 20100098535Abstract: A centrifugal multi-blade fan has multiple blades about a rotational shaft and draws in air along the rotational shaft and then blows the air approximately perpendicular to the rotational shaft to reduce wind noise. A scroll casing encloses the multi-blade fan and defines a scroll-shaped airflow passage for directing the air blown from the multi-blade fan. The scroll casing has an intake opening and an outlet opening at a scroll end, in a downstream scroll casing portion. The scroll casing expands such that a flow passage cross-sectional area on the airflow downstream side is larger than that on an airflow upstream side. A ratio of a blade length to a diameter of the multi-blade fan is greater than or equal to 0.12, and an outer scroll casing radius, relative to the rotational axis, increases as a logarithmic spiral, its expansion angle being from 3.3° to 4.8°.Type: ApplicationFiled: December 16, 2009Publication date: April 22, 2010Applicant: DENSO CORPORATIONInventors: Masaharu Sakai, Kouji Matsunaga, Yasushi Mitsuishi
-
Publication number: 20090180868Abstract: A blower unit includes a rotation shaft, a centrifugal fan and a casing. The centrifugal fan has blades arranged around the rotation shaft. The casing has a wall part defining an opening. The ring part has a ring shape having a center coinciding with an axis of the rotation shaft. The ring part is provided at first axial ends of the blades and support the blades. The ring part includes an arcuate wall curved in a radially inward of the centrifugal fan. The centrifugal fan is housed in the casing such that the arcuate wall of the ring part is located radially inside of the opening of the wall part.Type: ApplicationFiled: December 10, 2008Publication date: July 16, 2009Applicant: DENSO CORPORATIONInventors: Takahito Nakamura, Koji Ito, Masaharu Sakai
-
Publication number: 20090004007Abstract: A centrifugal fan includes a plurality of blades, a first wall disposed at first axial ends of the blades, and a second wall disposed at second axial ends of the blades and having a shaft portion at a center. At least one of the first wall and the second wall has a cutout portion configured to control balance.Type: ApplicationFiled: June 27, 2008Publication date: January 1, 2009Applicant: DENSO CORPORATIONInventors: Masaharu Sakai, Yoshiki Kondo, Toshinori Ochiai, Tomonori Akatsuka
-
Publication number: 20070274833Abstract: A centrifugal multi-blade fan has multiple blades about a rotational shaft and draws in air along the rotational shaft and then blows the air approximately perpendicular to the rotational shaft to reduce wind noise. A scroll casing encloses the multi-blade fan and defines a scroll-shaped airflow passage for directing the air blown from the multi-blade fan. The scroll casing has an intake opening and an outlet opening at a scroll end, in a downstream scroll casing portion. The scroll casing expands such that a flow passage cross-sectional area on the airflow downstream side is larger than that on an airflow upstream side. A ratio of a blade length to a diameter of the multi-blade fan is greater than or equal to 0.12, and an outer scroll casing radius, relative to the rotational axis, increases as a logarithmic spiral, its expansion angle being from 3.3° to 4.8°.Type: ApplicationFiled: July 31, 2007Publication date: November 29, 2007Inventors: Masaharu Sakai, Kouji Matsunaga, Yasushi Mitsuishi
-
Patent number: 7281897Abstract: Each of blades of a multi-blade centrifugal blower is provided with a taper portion, which is arranged at an inside periphery at least at the side of one rotation-shaft-direction end of the blade and tapers from the side of other rotation-shaft-direction end of the blade toward the side of the one rotation-shaft-direction end. The taper portion is positioned at a rotation-direction front side with respect to a back portion disposed at the side of the other rotation-shaft-direction end of the blade. Each of inlet angles throughout the taper portion is set in a range from 55° to 74°. Therefore, air flowing speed at an outlet of an impeller wheel is uniformed throughout the blade width. Work capacity and efficiency of the impeller wheel are increased, while noise is reduced.Type: GrantFiled: December 20, 2005Date of Patent: October 16, 2007Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Toshinori Ochiai, Masaharu Sakai, Shoichi Imahigashi, Yasushi Mitsuishi
-
Publication number: 20070217908Abstract: A centrifugal multiblade fan according to the present invention sucks air from one end side of an axial direction of a rotation axis to a radial inside, and blows the air to a radial outside. The centrifugal multiblade fan includes a plurality of blades located around the rotation axis. Each blade has a leading edge positioned at the radial inside, and a trailing edge positioned at a radial outside. The leading edge of each blade has an edge shape with a radius of curvature of 0.2 mm or less, for example.Type: ApplicationFiled: March 8, 2007Publication date: September 20, 2007Applicant: DENSO CorporationInventors: Toshinori Ochiai, Masaharu Sakai, Hideki Seki
-
Publication number: 20070212218Abstract: A centrifugal blower having a fan including a blade. A scroll casing houses the fan and has a first axial wall portion, a second axial wall portion, and a side wall extending between the first and second axial wall portions. The scroll casing includes a suction port in the first axial wall portion. The scroll casing also defines a scroll start portion and a scroll finish portion. The scroll casing has a scroll radius measured transverse to the rotation axis that changes from the scroll start portion to the scroll finish portion. Also, a maximum radius of the scroll radius is closer to the second axial wall portion than the first axial wall portion.Type: ApplicationFiled: March 6, 2007Publication date: September 13, 2007Applicants: DENSO Corporation, Nippon Soken, Inc.Inventors: Hideki Seki, Masaharu Sakai, Toshinori Ochiai, Yasushi Mitsuishi
-
Publication number: 20070160345Abstract: A small-size digital device requires preferable operability and user-friendliness of the user interface. In a multimedia reproduction device (10), an operation unit (40) acquires an instruction concerning content reproduction via a user operation. A read-out unit (44) reads out a content from an external recording medium mounted as a content data storage area. A storage unit (80) holds data on a plurality of function icons symbolizing a plurality of content reproduction function types and data on a plurality of media icons symbolizing the external recording medium types. A display processing unit (46) processes menu screen display and content reproduction. A menu control unit (48) generates image data on a menu screen where a plurality of function icons and a plurality of media icons are arranged two-dimensionally according to a user instruction.Type: ApplicationFiled: April 1, 2005Publication date: July 12, 2007Inventors: Masaharu Sakai, Kojiro Umemura, Shuji Hiramatsu, Ryuji Nakayama
-
Publication number: 20060140758Abstract: Each of blades of a multi-blade centrifugal blower is provided with a taper portion, which is arranged at an inside periphery at least at the side of one rotation-shaft-direction end of the blade and tapers from the side of other rotation-shaft-direction end of the blade toward the side of the one rotation-shaft-direction end. The taper portion is positioned at a rotation-direction front side with respect to a back portion disposed at the side of the other rotation-shaft-direction end of the blade. Each of inlet angles throughout the taper portion is set in a range from 55° to 74°. Therefore, air flowing speed at an outlet of an impeller wheel is uniformed throughout the blade width. Work capacity and efficiency of the impeller wheel are increased, while noise is reduced.Type: ApplicationFiled: December 20, 2005Publication date: June 29, 2006Applicants: DENSO Corporation, Nippon Soken, Inc.Inventors: Toshinori Ochiai, Masaharu Sakai, Shoichi Imahigashi, Yasushi Mitsuishi
-
Patent number: 6821088Abstract: In a predetermined range from a nose portion toward a scroll finish side in a scroll casing of a centrifugal blower, a first clearance dimension on a side of a suction port between an outer periphery of a centrifugal fan and a side plate of the scroll casing is set smaller than a second clearance dimension on a side opposite to the suction port between the outer periphery of the centrifugal fan and the side plate of the scroll casing. In addition, in the vicinity of the nose portion, a first wall part of the scroll casing on the side of the suction port protrudes toward a scroll finish side, from a second wall part of the scroll casing on the side opposite to the suction port.Type: GrantFiled: March 13, 2002Date of Patent: November 23, 2004Assignee: Denso CorporationInventors: Masaharu Sakai, Kouji Matsunaga
-
Patent number: 6769876Abstract: A centrifugal ventilator fan, which has improved fan performance and lower noise. A first outlet angle, on an upstream end of the fan, is less than a second outlet angle. Additionally, the first outlet angle is equal to zero degrees or greater and five degrees or less, while the second outlet angle is equal to thirty degrees or greater and forty five degrees or less. Furthermore, a first inlet angle, on an upstream end, is greater than a second inlet angle, on the opposite end. The first inlet angle is equal to sixty-five degrees or greater and ninety degrees or less, and the second inlet angle is equal to fifty-five degrees or more and seventy-five degrees or less.Type: GrantFiled: September 16, 2002Date of Patent: August 3, 2004Assignees: Nippon Soken, Inc., Denso CorporationInventors: Masaharu Sakai, Kouji Matsunaga, Yasushi Mitsuishi, Yoshiki Tada
-
Publication number: 20030053911Abstract: A centrifugal ventilator fan, which has improved fan performance and lower noise. A first outlet angle, on an upstream end of the fan, is less than a second outlet angle. Additionally, the first outlet angle is equal to zero degrees or greater and five degrees or less, while the second outlet angle is equal to thirty degrees or greater and forty five degrees or less. Furthermore, a first inlet angle, on an upstream end, is greater than a second inlet angle, on the opposite end. The first inlet angle is equal to sixty-five degrees or greater and ninety degrees or less, and the second inlet angle is equal to fifty-five degrees or more and seventy-five degrees or less.Type: ApplicationFiled: September 16, 2002Publication date: March 20, 2003Inventors: Masaharu Sakai, Kouji Matsunaga, Yasushi Mitsuishi, Yoshiki Tada
-
Publication number: 20030012649Abstract: A centrifugal multi-blade fan has multiple blades about a rotational shaft and draws in air along the rotational shaft and then blows the air approximately perpendicular to the rotational shaft to reduce wind noise. A scroll casing encloses the multi-blade fan and defines a scroll-shaped airflow passage for directing the air blown from the multi-blade fan. The scroll casing has an intake opening and an outlet opening at a scroll end, in a downstream scroll casing portion. The scroll casing expands such that a flow passage cross-sectional area on the airflow downstream side is larger than that on an airflow upstream side. A ratio of a blade length to a diameter of the multi-blade fan is greater than or equal to 0.12, and an outer scroll casing radius, relative to the rotational axis, increases as a logarithmic spiral, its expansion angle being from 3.3° to 4.80°.Type: ApplicationFiled: July 10, 2002Publication date: January 16, 2003Inventors: Masaharu Sakai, Kouji Matsunaga, Yasushi Mitsuishi
-
Publication number: 20020131861Abstract: In a predetermined range from a nose portion toward a scroll finish side in a scroll casing of a centrifugal blower, a first clearance dimension on a side of a suction port between an outer periphery of a centrifugal fan and a side plate of the scroll casing is set smaller than a second clearance dimension on a side opposite to the suction port between the outer periphery of the centrifugal fan and the side plate of the scroll casing. In addition, in the vicinity of the nose portion, a first wall part of the scroll casing on the side of the suction port protrudes toward a scroll finish side, from a second wall part of the scroll casing on the side opposite to the suction port.Type: ApplicationFiled: March 13, 2002Publication date: September 19, 2002Inventors: Masaharu Sakai, Kouji Matsunaga
-
Patent number: 5354730Abstract: A compound of the formula: ##STR1## wherein R.sup.1 is a trifluoromethyl group or a pentafluoroethyl group, R.sup.2 is a methyl group or an amino group, R.sup.3 is a C.sub.1 -C.sub.7 alkyl group, a C.sub.3 -C.sub.7 alkenyl group, a C.sub.3 -C.sub.7 alkynyl group, a halo (C.sub.1 -C.sub.6) alkyl group, a halo (C.sub.3 -C.sub.6) alkenyl group or a C.sub.1 -C.sub.4 alkoxy(C.sub.1 -C.sub.3)alkyl group and Y is an oxygen atom or a sulfur atom, which is useful as a herbicide.Type: GrantFiled: May 25, 1993Date of Patent: October 11, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Masayuki Enomoto, Eiki Nagano, Ryo Sato, Masaharu Sakai
-
Patent number: 5238906Abstract: Pyridone derivatives of the formula: ##STR1## wherein R is an alkyl group, an alkenyl group, an alkynyl group, a haloalkyl group, a haloalkenyl group or an alkoxyalkyl group, X is a hydrogen atom, a halogen atom, a methyl group optionally substituted with mono or poly halogen atoms or an ethyl group optionally substituted with mono or poly halogen atoms and Y is a hydrogen atom or a methyl group. Said compounds show a high herbicidal potency against undesired weeds.Type: GrantFiled: November 25, 1991Date of Patent: August 24, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Toru Uekawa, Susumu Takemura, Masayuki Enomoto, Masaharu Sakai, Ryo Sato, Eiki Nagano