Screwless chair

{
  "publication_number": "US11246419B2",
  "country": "US",
  "kind": "B2",
  "title": "Screwless chair",
  "abstract": "Present invention teaches a screwless chair where the unassembled product can come in a flat package, reducing the size of storage and adding to the ease of transportation. No screws are needed for the chair of present invention; no tools are needed for the assembly/disassembly when a user unfolds the seat back from the seat base, slides the hook pieces along the groove pieces and set the seat back down by setting the insertion pegs to the corresponding insertion holes. Errors in setting up the chair can be avoided. The ease of setting up, and thus the sturdiness and the safety of the chair, is not affected by repeated disassembly/re-assembly.",
  "claims": [
    "1. A screwless chair, comprising: a seat back; a seat base pivotably connected to the seat back by two metal rivets on two lower ends of the seat back; and two armrest pieces wherein a groove piece on each of the armrest pieces is slidably connected to a hook piece on two sides of the seat back, the hook pieces further having an end plate to limit the sliding travel of the hook pieces to the groove pieces, and four insertion pegs are located on an underside of the seat base for connecting to four insertion holes made on the two armrest pieces.",
    "2. A screwless chair, comprising: a seat back; a seat base pivotably connected to the seat back by two metal rivets on two lower ends of the seat back; and two armrest pieces wherein a groove piece on each of the armrest pieces is slidably connected to a hook piece on two sides of the seat back, and four insertion pegs are located on an underside of the seat base for connecting to four insertion holes made on the two armrest pieces, and wherein each of the insertion holes has a push-spring to lock the insertion pegs in place."
  ],
  "description_excerpt": "Chairs are necessary furniture products for offices and homes. The common shape of a chair takes up a substantial amount of volume when it is being stored or transported, if the chair is not designed in a stackable fashion.\n\nIn the last 30 years or so, it has been a popular trend that furniture products, including chairs, come in a pre-assembled package, reducing the size for storage and transportation. Many such pre-assembled chairs are widely available in various big-box stores.\n\nThe downside of such pre-assemble chairs is that it takes some effort on the part of consumers to locate the right parts, find the right tools (screw drives, for example), and fit all the components together. As can be imagined, errors are oftentimes made by consumers when installing/setting up chairs from parts that are contained in a box, or boxes.\n\nIf there is a need to disassemble the chairs, a reverse process has to be done, and re-assemble at a new/changed location. Not only is the assembly process prone to errors, the quality of the chairs will deteriorate as the process of assembly and disassembling is repeatedly. The sturdiness, and thus the safety, of the popular pre-assembled chairs becomes more of a concern, consequently.\n\nPresent invention provides a screwless chair that is simple to assemble and can come in a small package that's cost-effective even for storage and transportation, while the sturdiness of the chair will endure multiple assemble-disassemble runs, greatly adding to the safe usage for consumers.",
  "cpc": [
    "A47C 4/021",
    "A47C 4/02",
    "A47C 4/03",
    "A47C 4/04",
    "A47C 7/546",
    "F16B 12/10",
    "F16B 2012/103"
  ],
  "ipc": [
    "A47C 4/02",
    "A47C 4/04",
    "A47C 7/54",
    "F16B 12/10"
  ],
  "assignees": [
    "Festival Trading Inc"
  ],
  "inventors": [
    "Tao Yang"
  ],
  "filing_date": "2020-07-19",
  "publication_date": "2022-02-15",
  "grant_date": "2022-02-15",
  "priority_date": "2020-07-19",
  "application_number": "US-202016932797-A",
  "family_id": "79291697",
  "cited_by_count": 0,
  "citations": [
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}