Patents by Inventor Shinpei Totsuka

Shinpei Totsuka 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).

  • Backrest, lumbar support, chair, attachment structure for optional member, optional member, and furniture
    Patent number: 10966530
    Abstract: A backrest (7) includes: a tensile material (71) on which a load support surface (71f) configured to receive a load of a seated person is formed; a back front frame (80F) that supports an outer peripheral end portion (71e) of the tensile material (71); an attachment portion (87) which is formed in the back front frame (80F) and faces the tensile material (71) in a state where the attachment portion (87) is separated from the tensile material (71) in a direction intersecting the load support surface (71f); and a lumber support (200) that is attachable to and detachable from the attachment portion (87), in which the lumber support (200) includes an attaching portion (222) which extends in a direction along the load support surface (71f), is inserted into a gap (S) between the tensile material (71) and the attachment portion (87), and is fixed to the attachment portion (87).
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: April 6, 2021
    Assignee: OKAMURA CORPORATION
    Inventors: Hiroshi Masunaga, Shinpei Totsuka
  • Backrest, lumbar support, chair, attachment structure for optional member, optional member, and furniture
    Patent number: 10932573
    Abstract: A backrest (7) includes: a tensile material (71) on which a load support surface (71f) configured to receive a load of a seated person is formed; a back front frame (80F) that supports an outer peripheral end portion (71e) of the tensile material (71); an attachment portion (87) which is formed in the back front frame (80F) and faces the tensile material (71) in a state where the attachment portion (87) is separated from the tensile material (71) in a direction intersecting the load support surface (71f); and a lumber support (200) that is attachable to and detachable from the attachment portion (87), in which the lumber support (200) includes an attaching portion (222) which extends in a direction along the load support surface (71f), is inserted into a gap (S) between the tensile material (71) and the attachment portion (87), and is fixed to the attachment portion (87).
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: March 2, 2021
    Assignee: OKAMURA CORPORATION
    Inventors: Hiroshi Masunaga, Shinpei Totsuka
  • BACKREST, LUMBAR SUPPORT, CHAIR, ATTACHMENT STRUCTURE FOR OPTIONAL MEMBER, OPTIONAL MEMBER, AND FURNITURE
    Publication number: 20190298069
    Abstract: A backrest (7) includes: a tensile material (71) on which a load support surface (71f) configured to receive a load of a seated person is formed; a back front frame (80F) that supports an outer peripheral end portion (71e) of the tensile material (71); an attachment portion (87) which is formed in the back front frame (80F) and faces the tensile material (71) in a state where the attachment portion (87) is separated from the tensile material (71) in a direction intersecting the load support surface (71f); and a lumber support (200) that is attachable to and detachable from the attachment portion (87), in which the lumber support (200) includes an attaching portion (222) which extends in a direction along the load support surface (71f), is inserted into a gap (S) between the tensile material (71) and the attachment portion (87), and is fixed to the attachment portion (87).
    Type: Application
    Filed: June 9, 2017
    Publication date: October 3, 2019
    Applicant: OKAMURA CORPORATION
    Inventors: Hiroshi MASUNAGA, Shinpei TOTSUKA
  • Chair
    Patent number: D741099
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: October 20, 2015
    Assignee: Okamura Corporation
    Inventors: Ryou Igarashi, Shinpei Totsuka
  • Chair
    Patent number: D891843
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: August 4, 2020
    Assignee: Okamura Corporation
    Inventor: Shinpei Totsuka