Interlocking floor board

{
  "publication_number": "US9822533B2",
  "country": "US",
  "kind": "B2",
  "title": "Interlocking floor board",
  "abstract": "Aspects relate to improved floor boards. Certain embodiments may be laid and fixed without the need for fixing with adhesive or nails. In one embodiment, a floor board includes a four-sided surface board connected to a four-sided base board. Further example floor boards includes staggered tongue-shaped hooking tongues for connection of multiple floor boards.",
  "claims": [
    "1. A floorboard, comprising: a four-sided base board; and a four-sided surface board fixed and connected to the four-sided base board, wherein the four-sided base board comprises: a four-sided base board body wherein the underside of the edges of the four-sided base board body is provided with a plurality of buckles; and a plurality of hooking tongues formed along the edges of the four-sided base board body, wherein the plurality of hooking tongues along a first of the edges of the four-sided base board body and the plurality of hooking tongues along a second of the edges of the four-sided base board body are arranged in a staggered manner, the first edge being opposite to the second edge wherein each of the hooking tongues is elongated along the length of the four-sided base board, and wherein a leading edge of each said hooking tongue has a quarter-circular shape such that each said hooking tongue is slidably inserted into a corresponding buckle of an adjacent one of the four-sided base boards.",
    "2. The floorboard according to claim 1, wherein the plurality of buckles along the first of the edges of the four-sided base board body and the plurality of buckles along the second of the edges of the four-sided base board body are arranged in a staggered manner.",
    "3. The floorboard according to claim 1, wherein the plurality of hooking tongues along a third of the edges of the four-sided base board body and the plurality of hooking tongues along a fourth of the edges of the four-sided base board body are arranged in a staggered manner, the third edge being opposite to the fourth edge.",
    "4. The floorboard according to claim 1, wherein the plurality of buckles along the third of the edges of the four-sided base board body and the plurality of buckles along the fourth of the edges of the four-sided base board body are arranged in a staggered manner, the third edge being opposite to the fourth edge."
  ],
  "cpc": [
    "E04F 15/02038",
    "E04B 5/02",
    "E04C 2/38",
    "E04C 2/50",
    "E04F 15/02",
    "E04F 15/02194",
    "E04F 2201/0138",
    "E04F 2201/0153",
    "E04F 2201/022",
    "E04F 2201/043",
    "E04F 2201/09"
  ],
  "assignees": [
    "HUANG HUANWEN",
    "HONG KONG MEI LI SHENG FLOORING CO LTD"
  ],
  "filing_date": "2016-11-14",
  "publication_date": "2017-11-21",
  "grant_date": "2017-11-21",
  "priority_date": "2009-12-23",
  "application_number": "US-201615350362-A",
  "family_id": "44194939",
  "citations": [
    "CN101718142A",
    "CN101775891A",
    "CN201581597U",
    "CN2175275Y",
    "CN2394985Y",
    "US2003177728A1",
    "US2005028475A1",
    "US2012324816A1",
    "US5323575A",
    "US7690160B2",
    "US7698859B2",
    "US7779602B2",
    "US8266857B2",
    "US9499979B2"
  ]
}