Height-adjustable crib

{
  "publication_number": "US3670344A",
  "country": "US",
  "kind": "A",
  "title": "Height-adjustable crib",
  "abstract": "A height-adjustable crib has four legs composed of upper and lower sections. A laterally extending screw and pin are spaced apart on one section. These engage in adjacent holes spaced along the length of the other leg section. The pin extends only part way through the other section, while the screw extends all the way through so that a nut can be turned down on the screw to lock the two sections together. An end hole in the lower section is arranged so that it can only receive the pin in order to ensure that there is always a two-point connection between the two leg sections.",
  "claims": [
    "1. An infant''s crib having adjustable legs, each of said legs comprising a relatively long upper section and a relatively long lower section, several small openings spaced along the length of the lower section, the uppermost opening extending only part way through the lower leg section, the remaining openings extending all the way through the lower leg section, a screw extending laterally through the upper leg section near the bottom thereof said screw being sufficiently long to extend completely through and project from an opening in the lower leg section when the two sections are placed flush together, a pin mounted in the upper leg section, said pin being parallel to the screw and being spaced above the screw a distance equal to the distance between the openings in the lower leg section, said pin also projecting out from the upper leg section a distance slightly less than the depth of the uppermost opening in the lower leg section so the pin but not the screw can engage in the uppermost opening in the lower leg section, and a nut engaging the portion of the screw projecting through an opening in the lower leg section so that when the two sections are placed flush together and the nut is tightened down, there is always a two point connection between the two leg sections.",
    "2. A crib defined in claim 1 wherein the nut has collar which extends outward beyond the central portion of the nut containing the threaded opening therein 50 that when the nut is turned down on the associated screw, the protruding end of the screw is recessed into the collar."
  ],
  "cpc": [
    "A47D 7/01",
    "A47B 91/02",
    "A47D 9/012"
  ],
  "ipc": [
    "A47B 91/02",
    "A47D 7/00"
  ],
  "assignees": [
    "Hedstrom Co"
  ],
  "inventors": [
    "Alban M Boudreau"
  ],
  "filing_date": "1971-01-06",
  "publication_date": "1972-06-20",
  "grant_date": "1972-06-20",
  "priority_date": "1971-01-06",
  "application_number": "US-3670344D-A",
  "family_id": "22299618",
  "cited_by_count": 13,
  "citations": [
    "GB242540A",
    "US2889560A",
    "US3495794A"
  ]
}