Boom Uplock Arrangement

{
  "publication_number": "US2009127218A1",
  "country": "US",
  "kind": "A1",
  "title": "Boom Uplock Arrangement",
  "abstract": "Boom uplock arrangement for a loader, said loader comprising a least one movable boom arm (20) and a support means (70), wherein the boom arm (20) is provided with a horizontal, transversal through going hole (21), and a locking pin (42) movably arranged in the hole (21), the locking pin (42) is elongated, and having a first (421) and a second (422) end the locking pin (42) is movable in its longitudinal direction between a passive and an active position; wherein the passive position of the locking pin (42) enables movement of the boom arm (20) past the support means (70), and the active position of the locking pin (42) prevents movement of the boom arm (20) past the support means (70). The invention is characterized in that the locking pin (42) is provided with a protruding manoeuvre stick (48) arranged in the vicinity of the first end (421) of the locking pin (42), enabling manoeuvring of the locking pin (42) between the passive and active positions.",
  "claims": [
    "1. Boom uplock arrangement for a loader, said loader comprising at least one movable boom arm (20) and a support means (70), wherein the boom arm (20) is provided with a horizontal, transversal through going hole (21), and a locking pin (42) movably arranged in the hole (21), the locking pin (42) is elongated, and having a first (421) and a second (422) end, the locking pin (42) is movable in its longitudinal direction between a passive and an active position; wherein the passive position of the locking pin (42) enables movement of the boom arm (20) past the support means (70), and the active position of the locking pin (42) prevents movement of the boom arm (20) past the support means (70), characterized in that the locking pin (42) is provided with a protruding maneuver stick (48) arranged in the vicinity of the first end (421) of the locking pin (42), enabling maneuvering of the locking pin (42) between the passive and active positions.",
    "2. Boom uplock arrangement according to claim 1, characterized in that a tubular housing (50) is arranged at one side of the boom arm (20) in connection with the hole (21), and essentially enclosing the first end (421) of the locking pin (42).",
    "3. Boom uplock arrangement according to claim 2, characterized in that the tubular housing (50) is provided with a slot (52), and that the maneuver stick (48) of the locking pin (42) is movable within said slot (52).",
    "4. Boom uplock arrangement according to claim 3, characterized in that at least one part of the slot (52) is parallel with the longitudinal direction of the locking pin (42).",
    "5. Boom uplock arrangement according to claim 1, characterized in that the locking pin (42) has a circular cylindrical shape, and is rotatably movable in the hole (21).",
    "6. Boom uplock arrangement according to claim 5, characterized in that at least one second part of the slot (52) being transversal to the first slot part, enabling transversal movement of the stick (48).",
    "7. Boom uplock arrangement according to claim 2, characterized in that a biased spring mechanism (60) is provided in the housing (50) applying a force to the locking pin (42) in the longitudinal direction of the locking pin (42), for assisting movement of the locking pin (42) from its passive to active position.",
    "8. Boom uplock arrangement according to claim 7, characterized in that the spring mechanism (60) is a helical spring.",
    "9. Boom uplock arrangement according to claim 7, characterized in that the first end (421) of the locking pin (42) being arranged with a cavity (413) for receiving the spring mechanism (60).",
    "10. Boom uplock arrangement according to claim 1, characterized in that the support means (70) is provided with a groove (71) with mating fit for receiving the locking pin (42).",
    "11. Loader comprising a boom uplock arrangement according to claim 1.",
    "12. Boom uplock arrangement according to claim 2, characterized in that the locking pin (42) has a circular cylindrical shape, and is rotatably movable in the hole (21).",
    "13. Boom uplock arrangement according to claim 3, characterized in that the locking pin (42) has a circular cylindrical shape, and is rotatably movable in the hole (21).",
    "14. Boom uplock arrangement according to claim 3, characterized in that a biased spring mechanism (60) is provided in the housing (50) applying a force to the locking pin (42) in the longitudinal direction of the locking pin (42), for assisting movement of the locking pin (42) from its passive to active position.",
    "15. Boom uplock arrangement according to claim 4, characterized in that a biased spring mechanism (60) is provided in the housing (50) applying a force to the locking pin (42) in the longitudinal direction of the locking pin (42), for assisting movement of the locking pin (42) from its passive to active position.",
    "16. Boom uplock arrangement according to claim 5, characterized in that a biased spring mechanism (60) is provided in the housing (50) applying a force to the locking pin (42) in the longitudinal direction of the locking pin (42), for assisting movement of the locking pin (42) from its passive to active position.",
    "17. Boom uplock arrangement according to claim 6, characterized in that a biased spring mechanism (60) is provided in the housing (50) applying a force to the locking pin (42) in the longitudinal direction of the locking pin (42), for assisting movement of the locking pin (42) from its passive to active position.",
    "18. Boom uplock arrangement according to claim 8, characterized in that the first end (421) of the locking pin (42) being arranged with a cavity (413) for receiving the spring mechanism (60).",
    "19. Boom uplock arrangement according to claim 2, characterized in that the support means (70) is provided with a groove (71) with mating fit for receiving the locking pin (42).",
    "20. Loader comprising a boom uplock arrangement according to claim 2."
  ],
  "description_excerpt": "The present invention relates to a boom uplock arrangement for a loader, in accordance with the preamble of the independent claim. The present invention also relates to a loader comprising such boom uplock arrangement.\n\nLoader vehicles are generally exposed to serious stress and strain in its operating environment. Especially vehicles operating in mines; running 24-hours in a rough and dangerous environment, need to be equipped with powerful, durable and secure constructions of simple mechanical details. The more complicated construction, the larger risk for operational stoppage. Loaders and trucks used to remove masses of rock from mines generally have a load capacity of 1-20 tons and 20-50 tons respectively. Thus, the mining environment make great demands on the vehicles, both constructional, ergonomic and safety demands. For different kinds of loaders for moving of material, such as mining loaders and other front end loaders, it is sometimes desirable to safely prevent the boom from unintentionally lowering from an elevated position, as an example when an driver needs to perform some kind of service or maintenance beneath the boom arm. The boom arms with its bucket (sometimes with load) must be raised and kept in an elevated position, to facilitate such service to be effected. Thus, the elevated boom with its bucket presents a dangerous hazard for the driver while carrying out the service. Different kinds of arrangements for preventing the boom from lowering beneath a certain level or to retain them in a certain position have therefore been used within the field.",
  "cpc": [
    "E02F 3/388",
    "B66C 23/90",
    "E02F 3/38",
    "E02F 9/24"
  ],
  "ipc": [
    "B66C 23/90"
  ],
  "assignees": [
    "HYLEN ROGER"
  ],
  "inventors": [
    "HYLEN ROGER"
  ],
  "filing_date": "2006-06-19",
  "publication_date": "2009-05-21",
  "priority_date": "2005-08-11",
  "application_number": "US-92299806-A",
  "family_id": "37727579",
  "citations": [
    "US1770751A",
    "US2778513A",
    "US2829001A",
    "US3396863A",
    "US3730362A",
    "US4189278A",
    "US4355944A",
    "US4388038A",
    "US4404695A",
    "US4793764A"
  ]
}