Patents by Inventor Taizo Sato

Taizo Sato 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).

  • Publication number: 20240060494
    Abstract: To reduce surface pressure acting on a tip of a winding terminal portion of a spiral wall of an orbiting scroll in a scroll compressor. In a scroll compressor 10, a thrust plate 81 and a thrust sheet 82 capable of being elastically deformed are provided between an opposing surface 237 serving as a thrust receiving part and an orbiting base plate 521 of an orbiting scroll 52. A first sealing member 83 seals between the orbiting base plate 521 and the thrust sheet 82 and a second sealing member 84 having a diameter greater than that of the first sealing member 83 seals the opposing surface 237 of a second partition wall 232 and the thrust plate 81. A back pressure chamber H5 is partitioned from a suction pressure area (space H6) by the thrust plate 81, thrust sheet 82, the first sealing member 83, and the second sealing member 84. A circular concave portion 816 is formed on a surface of the thrust plate 81 on the thrust sheet 82 side.
    Type: Application
    Filed: December 17, 2021
    Publication date: February 22, 2024
    Applicant: SANDEN CORPORATION
    Inventors: Atsuo TESHIMA, Taizo SATO, Hiroki MASHIYAMA
  • Publication number: 20240026882
    Abstract: Reduction of a rotational moment that occurs in an orbiting scroll is suppressed. A scroll compressor 10 includes: a fixed scroll 51; an orbiting scroll 52; an anti-rotation mechanism 300; and a back pressure chamber H5. A spiral orbiting wrap 522 of the orbiting scroll 52 is meshed with a spiral fixed wrap 512 of the fixed scroll 51. A first compression chamber C1 is formed by an inner wall surface 522a of the orbiting wrap 522 and an outer wall surface 512b of the fixed wrap 512. A second compression chamber C2 is formed by an inner wall surface 512a of the fixed wrap 512 and an outer wall surface 522b of the orbiting wrap 522. The orbiting base plate 521 of the orbiting scroll 52 includes a first through hole 701 capable of communicating the first compression chamber C1 with the back pressure chamber H5 and a second through hole 702 capable of communicating the second compression chamber C2 with the back pressure chamber H5.
    Type: Application
    Filed: November 19, 2021
    Publication date: January 25, 2024
    Applicant: SANDEN CORPORATION
    Inventors: Atsuo TESHIMA, Taizo SATO, Tetsuya IMAI
  • Publication number: 20240011488
    Abstract: To suppress reduced rotational moments that occur at a movable scroll. A scroll compressor (1) includes a fixed scroll (2), a movable scroll (3), and an anti-rotation mechanism (30). A spiral movable wrap (3b) of the movable scroll (3) meshes with a spiral fixed wrap (2b) of the fixed scroll (2). A first compression chamber (C1) is formed by an inner wall surface (3b1) of the movable wrap (3b) and an outer wall surface (2b2) of the fixed wrap (2b). A second compression chamber (C2) is formed by an inner wall surface (2b1) of the fixed wrap (2b) and an outer wall surface (3b2) of the movable wrap (3b). After a winding terminal end (3f) of the movable wrap (3b) contacts the outer wall surface (2b2) of the fixed wrap (2b) and the first compression chamber (C1) is thereby closed, a winding terminal end (2f) of the fixed wrap (2b) contacts the outer wall surface (3b2) of the movable wrap (3b) and the second compression chamber (C2) is thereby closed.
    Type: Application
    Filed: October 15, 2021
    Publication date: January 11, 2024
    Applicant: SANDEN CORPORATION
    Inventors: Atsuo TESHIMA, Taizo SATO
  • Publication number: 20240011487
    Abstract: Lubricant is satisfactorily supplied to a bearing that supports an eccentric bush. A scroll compressor (100) includes a fixed scroll (122) fixed to a housing (140), an orbiting scroll (124) that orbits with respect to the fixed scroll, and a conversion mechanism (300) that mutually converts a rotary motion of a drive shaft (166) and an orbiting motion of the orbiting scroll. The converting mechanism includes an eccentric shaft (260) that is provided on an end surface of the drive shaft and is eccentric with respect to the drive shaft, an eccentric bush (270) having a through hole (271) into which the eccentric shaft is fitted, and a bearing (280) that is press-fitted into a boss portion (250) formed on the orbiting scroll and supports an outer peripheral surface (272) of the eccentric bush. A lubricant supply passage (350) for supplying lubricant to the bearing is penetratingly formed in the eccentric bush.
    Type: Application
    Filed: October 15, 2021
    Publication date: January 11, 2024
    Applicant: SANDEN CORPORATION
    Inventors: Tetsuya IMAI, Taizo SATO
  • Patent number: 11867173
    Abstract: [Problem] A scroll compressor is provided which is capable of effectively reducing a pressure loss in a pathway extending from a discharge space to a discharge port. [Solution] The scroll compressor includes a discharge space 27 formed in a compressing mechanism cover 9 of a housing 11, a discharge hole 26 which is formed in a fixed scroll 21 and discharges a compressed refrigerant to the discharge space, a discharge port 51 which discharges the refrigerant to the outside of the housing, a relief passage 71 which communicates the discharge space and the discharge port with each other, and a differential pressure valve 74 which is provided in the relief passage and opens in accordance with a pressure difference between the discharge space and the discharge port. The relief passage opens in the discharge space above the discharge hole.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: January 9, 2024
    Assignee: SANDEN CORPORATION
    Inventors: Tetsuya Imai, Taizo Sato
  • Patent number: 11773852
    Abstract: [Problem] A scroll compressor is provided which effectively suppresses the occurrence of localized contact caused by deformation of a fixed scroll or a movable scroll due to the influence of a compressive reaction force or thermal expansion and shortens a break-in time. [Solution] Laps 24 and 32 of a fixed scroll 21 and a movable scroll 22 are constituted to have a plurality of step portions between a winding end portion at an outermost periphery and a winding start portion at an innermost periphery and decrease stepwise in height toward the winding start portion from the winding end portion. The position and height of each step portion are set so that when the spiral laps 24 and 32 are expanded on a predetermined plane, a base point of each step portion is placed on a predetermined arc drawn on the plane.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: October 3, 2023
    Assignee: SANDEN CORPORATION
    Inventors: Hironobu Inaba, Taizo Sato, Tetsuya Imai
  • Publication number: 20230272798
    Abstract: A scroll compressor prevents shortage of lubrication for sliding portions of a scroll unit. A scroll compressor 10 includes: an oil separator 100 that separates lubricant from the gaseous refrigerant discharged into a discharge chamber H3; a first lubricant chamber H5 that stores the lubricant separated by the oil separator 100; a first lubricant supply passage for supplying the lubricant in the first lubricant chamber H5 to a back pressure chamber H6; and a second lubricant supply passage for supplying the lubricant in the first lubricant chamber to a portion near an outer end portion of a scroll unit 50. The second lubricant supply passage is formed as a passage that allows the lubricant in the first lubricant chamber to flow through a second lubricant chamber H7 disposed above the first lubricant chamber H5 and connected to the first lubricant chamber H5 via an orifice OL3.
    Type: Application
    Filed: August 26, 2021
    Publication date: August 31, 2023
    Applicant: SANDEN CORPORATION
    Inventors: Tetsuya IMAI, Taizo SATO
  • Publication number: 20220178370
    Abstract: [Problem] A scroll compressor is provided which effectively suppresses the occurrence of localized contact caused by deformation of a fixed scroll or a movable scroll due to the influence of a compressive reaction force or thermal expansion and shortens a break-in time. [Solution] Laps 24 and 32 of a fixed scroll 21 and a movable scroll 22 are constituted to have a plurality of step portions between a winding end portion at an outermost periphery and a winding start portion at an innermost periphery and decrease stepwise in height toward the winding start portion from the winding end portion. The position and height of each step portion are set so that when the spiral laps 24 and 32 are expanded on a predetermined plane, a base point of each step portion is placed on a predetermined arc drawn on the plane.
    Type: Application
    Filed: March 16, 2020
    Publication date: June 9, 2022
    Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
    Inventors: Hironobu INABA, Taizo SATO, Tetsuya IMAI
  • Publication number: 20220170461
    Abstract: [Problem] A scroll compressor is provided which has improved workability when a back pressure chamber and a compression chamber are communicated with each other. [Solution] A scroll compressor 1 includes a back pressure chamber 39 formed in a back surface of a mirror plate 31 of a movable scroll 22 in the scroll compressor 1, and a communication hole 51 which is formed in the mirror plate 31 of the movable scroll 22 and communicates the back pressure chamber 39 and a compression chamber 3-1 with each other. The communication hole 51 is constituted of a large-diameter hole section 52 located on the back pressure chamber 33 side of the mirror plate 31 of the movable scroll 22, and a small-diameter hole section 53 which continues from the large-diameter hole section 52 to reach the compression chamber 34.
    Type: Application
    Filed: March 16, 2020
    Publication date: June 2, 2022
    Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION
    Inventors: Hironobu INABA, Taizo SATO, Tetsuya IMAI
  • Publication number: 20220136500
    Abstract: [Problem] A scroll compressor is provided which is capable of effectively reducing a pressure loss in a pathway extending from a discharge space to a discharge port. [Solution] The scroll compressor includes a discharge space 27 formed in a compressing mechanism cover 9 of a housing 11, a discharge hole 26 which is formed in a fixed scroll 21 and discharges a compressed refrigerant to the discharge space, a discharge port 51 which discharges the refrigerant to the outside of the housing, a relief passage 71 which communicates the discharge space and the discharge port with each other, and a differential pressure valve 74 which is provided in the relief passage and opens in accordance with a pressure difference between the discharge space and the discharge port. The relief passage opens in the discharge space above the discharge hole.
    Type: Application
    Filed: March 16, 2020
    Publication date: May 5, 2022
    Applicant: Sanden Automotive Components Corporation
    Inventors: Tetsuya IMAI, Taizo SATO
  • Patent number: 11098716
    Abstract: The scroll-type compressor comprises a fixed scroll and an orbiting scroll engaged with each other; a back pressure control valve 50 inserted from the large-diameter side of the stepped-shaped pressure release passage L4 which communicates between a suction chamber H1 and a back pressure chamber H3 which applies a back pressure for pressing the orbiting scroll against the fixed scroll. The scroll-type compressor further comprises an O-ring 60 fitted in a circumferential groove 53a formed in the outer peripheral surface of the valve 50, and a ring member 61 press-fitted into the large-diameter side of the pressure release passage L4, and holds the valve 50 between the ring member 61 and the stepped portion. Then, the compressive stress is unlikely to be applied to the valve 50, and the deformation of the valve 50 is reduced to prevent the reduction in the control accuracy of the back pressure.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: August 24, 2021
    Assignee: Sanden Automotive Components Corporation
    Inventor: Taizo Sato
  • Publication number: 20190293071
    Abstract: The scroll-type compressor comprises a fixed scroll and an orbiting scroll engaged with each other; a back pressure control valve 50 inserted from the large-diameter side of the stepped-shaped pressure release passage L4 which communicates between a suction chamber H1 and a back pressure chamber H3 which applies a back pressure for pressing the orbiting scroll against the fixed scroll. The scroll-type compressor further comprises an O-ring 60 fitted in a circumferential groove 53a formed in the outer peripheral surface of the valve 50, and a ring member 61 press-fitted into the large-diameter side of the pressure release passage L4, and holds the valve 50 between the ring member 61 and the stepped portion. Then, the compressive stress is unlikely to be applied to the valve 50, and the deformation of the valve 50 is reduced to prevent the reduction in the control accuracy of the back pressure.
    Type: Application
    Filed: October 10, 2017
    Publication date: September 26, 2019
    Inventor: Taizo SATO
  • Publication number: 20080215859
    Abstract: A computer which performs parallel processing of a plurality of programs in a time-division fashion includes hardware resources divided into a plurality of areas, an evacuation unit which records identification information identifying a first program, and evacuates information stored in an area of said plurality of areas if the area is necessary for execution of a second program and is being used for execution of the first program, and a restoration unit which restores the evacuated information to the area based on the identification information when the second program comes to a halt or to an end.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 4, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Hideo Miyake, Atsuhiro Suga, Yasuki Nakamura, Masayuki Tsuji, Yasuhiro Yamazaki, Yoshimasa Takebe, Taizo Sato, Shinichiro Tago
  • Patent number: 7134004
    Abstract: An information processing device reads, buffers, decodes and executes instructions from an instruction store portion by pipeline processing includes: an instruction reading request portion which assigns a read address to the instruction store portion, an instruction buffering portion which includes a plurality of instruction buffers which buffer an instruction sequence read from the instruction store portion; an instruction execution unit which decodes and executes instructions buffered by the instruction buffering portion. A branching instruction detection portion detects a branching instruction in the instruction sequence read from the instruction store portion. A branch target address information buffering portion includes a plurality of branch target address information buffers which, when the branching instruction detection portion has detected a branching instruction, buffer the branch target address information for generating the branch target address of the branching instruction.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: November 7, 2006
    Assignee: Fujitsu Limited
    Inventors: Shin-ichiro Tago, Taizo Sato, Yoshimasa Takebe, Yasuhiro Yamazaki, Teruhiko Kamigata, Atsuhiro Suga, Hiroshi Okano, Hitoshi Yoda
  • Publication number: 20060224870
    Abstract: The present invention is defined in that an information processing device which reads, buffers, decodes and executes instructions from an instruction store portion by pipeline processing comprises: an instruction reading request portion which assigns a read address to the instruction store portion; an instruction buffering portion including a plurality of instruction buffers which buffer an instruction sequence read from the instruction store portion; an instruction execution unit which decodes and executes instructions buffered by the instruction buffering portion; a branching instruction detection portion which detects a branching instruction in the instruction sequence read from the instruction store portion; and a branch target address information buffering portion including a plurality of branch target address information buffers which, when the branching instruction detection portion has detected a branching instruction, buffer the branch target address information for generating the branch target addre
    Type: Application
    Filed: May 31, 2006
    Publication date: October 5, 2006
    Inventors: Shin-ichiro Tago, Taizo Sato, Yoshimasa Takebe, Yasuhiro Yamazaki, Teruhiko Kamigata, Atsuhiro Suga, Hiroshi Okano, Hitoshi Yoda
  • Patent number: 6946041
    Abstract: A material for shadow mask having the following composition of components: C?0.0008 wt %, Si?0.03 wt %, Mn:0.1 to 0.5 wt %, P?0.02 wt %, S?0.02 wt %, Al:0.01 to 0.07 wt %, N?0.0030 wt %, B: an amount satisfying the formula: 5 ppm?B?11/14√óN?30 ppm, balance: Fe and inevitable impurities; a method for producing the material; a shadow mask using the material (cold rolled steel sheet); and an image receiving tube equipped with the shadow mask. The material has excellent etching characteristics, which are uniform within the same coil, and excellent press formability.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: September 20, 2005
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Taizo Sato, Toshiyuki Ueda, Shinichi Aoki
  • Patent number: 6803712
    Abstract: A material for shadow mask having the following composition of components: C≦0.0008 wt %, Si≦0.03 wt %, Mn:0.1 to 0.5 wt %, P≦0.02 wt %, S≦0.02 wt %, Al:0.01 to 0.07 wt %, N≦0.0030 wt %, B: an amount satisfying the formula: 5 ppm≦B-11/14×N≦30 ppm, balance: Fe and inevitable impurities; a method for producing the material; a shadow mask using the material (cold rolled steel sheet); and an image receiving tube equipped with the shadow mask. The material has excellent etching characteristics, which are uniform within the same coil, and excellent press formability.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: October 12, 2004
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Taizo Sato, Toshiyuki Ueda, Shinichi Aoki
  • Patent number: 6754778
    Abstract: A memory control system has a replacement detection/notification circuit for detecting occurrence of replacement of dirty entry in a cache and informing a memory controller of the detection, and a state control circuit for precharging the currently active page in a main memory when the memory controller is informed of the detection and a preceding access to the main memory attendant upon the replacement of dirty entry is completed. By precharging the active page in the main memory to return to the idle state when the preceding access attendant upon the replacement of dirty entry is completed, the succeeding access can be done only by activating the aimed page probably different from the above page. It is thereby obviated to return the activated page due to the preceding access to the idle state after a page miss occurs in the succeeding access.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: June 22, 2004
    Assignee: Fujitsu Limited
    Inventor: Taizo Sato
  • Patent number: 6632298
    Abstract: The present invention aims at providing a sophisticated segregation reducing technique which a conventional technique cannot achieve by finding the relationship between the casting structure and the segregation of components at the time of solidification and the heat treatment conditions. That is, the present invention aims at providing material for shadow masks which exhibits excellent quality with respect to streaks. A material for a shadow mask of the present invention is formed of a casting slab for preparing the shadow mask which comprises an Ni—Fe alloy containing 30 to 45% of Ni. The casting slab has a cast structure comprising a columnar crystal and/or a chill crystal in an amount of 99% or more. In particular, it is preferred that the casting slab contains no equiaxed crystal.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: October 14, 2003
    Assignees: Toyo Kohan Co., Ltd., Nippon Yakin Kogyo Co., Ltd.
    Inventors: Syun-ichi Morita, Taizo Sato, Jun Agari, Tsutomu Omori, Tatsuya Itoh, Shigeru Hirata
  • Publication number: 20030175145
    Abstract: A material for shadow mask having the following composition of components: C≦0.0008 wt %, Si≦0.03 wt %, Mn:0.1 to 0.5 wt %, P≦0.02 wt %, S≦0.02 wt %, Al:0.01 to 0.07 wt %, N≦0.0030 wt %, B: an amount satisfying the formula: 5 ppm≦B−11/14×N≦30 ppm, balance: Fe and inevitable impurities; a method for producing the material; a shadow mask using the material (cold rolled steel sheet); and an image receiving tube equipped with the shadow mask. The material has excellent etching characteristics, which are uniform within the same coil, and excellent press formability.
    Type: Application
    Filed: April 10, 2003
    Publication date: September 18, 2003
    Applicant: Toyo Kohan Ltd.
    Inventors: Taizo Sato, Toshiyuki Ueda, Shinichi Aoki