Door opener and latch

{
  "publication_number": "US4109950A",
  "country": "US",
  "kind": "A",
  "title": "Door opener and latch",
  "abstract": "An improved door opener and latch device particularly useful for cabinets in recreational vehicles includes a bolt attached to a cabinet door and engageable either with a strike housing attached to the frame for the door or with a control plunger member attached to the frame. A hidden control plunger in the frame releases the bolt from the strike.",
  "claims": [
    "1. A door opener and latch device comprising, in combination: a unitary, flexible latch bolt for attachment to a door panel, a strike for attachment to a frame, and a semi-concealed plunger member for mounting in the frame with the strike and for engaging and operating the bolt, said bolt including a first flexible arm projecting substantially transverse to the plane of the panel, said arm including a strike engaging projection biased in a first sense by the flexible arm into locking engagement with the strike when the panel is in a closed position on the frame, said strike being affixed to the frame to receive the projection, and said plunger including a first manual actuation end projecting on the outside of the frame and a second projection engaging portion on the inside of the frame, said plunger being mounted on the strike for reciprocal movement of the projection engaging portion into and out of engagement with the projection, said projection being disengaged from the strike by manual movement of the plunger to release the projection from the strike against the biasing force of the flexible arm by displacing the projecting from the strike, the biasing force of the flexible arm thereby providing a spring force which substantially simultaneously displaces the projection in the first sense from the strike and separates the panel from the frame, said plunger including a flexible biasing arm integrally molded with the plunger, said flexible biasing arm engaging the strike and continuously biasing the plunger toward the position out of engagement with the bolt.",
    "2. The improved door opener and latch device of claim 1 wherein said strike includes an arcuate guide surface for engaging the latch bolt projection and guiding the latch bolt projection against the biasing force of the flexible arm into a locked position whereby the projection is engaged over a lip of the strike.",
    "3. The door opener and latch device of claim 1 wherein said strike comprises a housing fixed to the frame, said housing including a guide slot for receipt and retention of the plunger member.",
    "4. The door opener and latch device of claim 1 wherein said flexible latch bolt includes a second arm projecting substantially transversely from the first flexible arm and engageable against the strike when the door panel is in the closed position to impart a rotational force upon the first flexible arm in a sense opposite the force of the first arm.",
    "5. The door opener construction of claim 1 wherein the plunger is substantially transverse to the arm and moves in a direction substantially parallel to the panel to engage the arm and drive the arm out of locking engagement with the strike.",
    "6. The improved door opener construction of claim 1 wherein said plunger includes a driving cam surface for engaging the strike engaging projection and defines, in combination with the strike housing, an inclined surface upon which the strike engaging projection of the flexible arm moves in response to the biasing force of the arm whenever the plunger is moved to a position which effects release of the projection from the strike."
  ],
  "description_excerpt": "This invention relates to an improved door opener and latch device and, more particularly, to a door opener and latch device useful in combination with cabinets having panels which pivot about a horizontal axis.\n\nWith the increase in popularity of recreational vehicles, various accessories for such vehicles have come into demand. Among such accessories are interior storage cabinets. Typically, such storage cabinets include a front panel or door which is hinged along its top edge to swing from a vertical closed position outward and upward about a horizontal axis to an open position. When the panel is in the vertical closed position, it is desirable to have a latch mechanism which will retain the panel in the closed position. Such a latch mechanism should resist sudden jars or bumps which may occur in a recreational vehicle.\n\nAdditionally, such a latch mechanism is desirably concealed or semi-concealed so that hardware will not be exposed on the outside of the panel. That is, hardware may project dangerously into the interior of the vehicle and provide a source of injury or damage. Thus, for reasons of safety, it is desirable to maintain the latch mechanism as a concealed or semi-concealed mechanism.\n\nLatch mechanisms of this general nature have been disclosed in prior art patents. For example, Beckman in U.S. Pat. No 3,797,870 discloses a flush mounted handle, latch bolt lock and housing assembly. The Beckman device may be flush mounted in a vertical door panel of a recreational vehicle in a manner that avoids dangerous exposure of the latch.",
  "cpc": [
    "E05B 63/248",
    "E05C 19/06",
    "Y10S 292/16",
    "Y10S 292/37",
    "Y10S 292/38",
    "Y10S 292/72",
    "Y10T 292/18"
  ],
  "ipc": [
    "E05B 63/24",
    "E05C 19/06"
  ],
  "assignees": [
    "Keystone Consolidated Industries Inc"
  ],
  "inventors": [
    "Dagfinn O. Amdal"
  ],
  "filing_date": "1977-01-31",
  "publication_date": "1978-08-29",
  "grant_date": "1978-08-29",
  "priority_date": "1977-01-31",
  "application_number": "US-76382777-A",
  "family_id": "25068922",
  "cited_by_count": 27,
  "citations": [
    "US194166A",
    "US651464A",
    "US906452A",
    "US2233278A",
    "US3469875A",
    "US3797870A"
  ]
}