Mounting assembly

{
  "publication_number": "US2019135446A1",
  "country": "US",
  "kind": "A1",
  "title": "Mounting assembly",
  "abstract": "A mounting assembly for coupling an accessory to a frame including a base configured to be coupled to the frame; the base having a hollow portion; the hollow portion including a receiving end including a tapered socket; an internal interlocking portion adjacent to the tapered socket; and a securing end opposite from the receiving end; a shaft configured to be connected to an accessory at a first end and received in the hollow portion of the base in an engaged position, the shaft including a tapered boss adjacent to the first end, the tapered boss configured to engage the tapered socket; an external interlocking portion adjacent to the tapered boss configured to engage the internal interlocking portion; and a second end opposite from the first end, the second end including a threaded surface; wherein when the shaft is in an engaged position, the shaft is static in the hollow portion.",
  "claims": [
    "1. A mounting assembly for coupling an accessory to a frame comprising: a base configured to be coupled to the frame; the base having a hollow portion; the hollow portion comprising: a receiving end including a tapered socket; an internal interlocking portion adjacent to the tapered socket; and a securing end opposite from the receiving end; a shaft configured to be connected to an accessory at a first end, the shaft configured to be received in the hollow portion of the base in an engaged position, the shaft comprising: a tapered boss adjacent to the first end, the tapered boss configured to engage the tapered socket; an external interlocking portion adjacent to the tapered boss configured to engage the internal interlocking portion; and a second end opposite from the first end, the second end including a threaded surface; wherein when the shaft is in an engaged position, the shaft is static in the hollow portion of the base. 2. The mounting assembly of claim 1, further comprising: a nut configured to be threaded onto the threaded surface of the shaft; wherein when the nut is tightened, the shaft is secured into an engaged position. 3. The mounting assembly of claim 2, wherein the nut is a conically shaped nut, the base further comprises an angled portion at the securing end to receive the conically shaped nut. 4. The mounting assembly of claim 1, wherein the shaft further comprising a cylindrical portion disposed on the second end adjacent to the threaded surface. 5. The mounting assembly of claim 4, wherein the cylindrical portion is smooth. 6. The mounting assembly of claim 2, further comprising a washer in contact with the nut and the base. 7. The mounting assembly of claim 6, wherein compression of the washer is provided by the nut threadingly engaging with the threaded surface on the shaft. 8. The mounting assembly of claim 7, wherein the washer comprises a conically shaped washer. 9. The mounting assembly of claim 8, wherein the base further comprises an angled portion at the securing end to receive the conically shaped washer. 10. The mounting assembly of claim 1, wherein the base and shaft are releasably coupled with a fastener member. 11. The mounting assembly of claim 10, wherein the fastener member is a quick-release lock pin. 12. The mounting assembly of claim 1, further comprising a clocking feature disposed on at least one of the base and the shaft. 13. The mounting assembly of claim 1, wherein the accessory is a nacelle sail. 14. The mounting assembly of claim 1, wherein the frame is an airframe of an aircraft. 15. A base for a mounting assembly that couples an accessory to a frame comprising: a base configured to be coupled to the frame; the base having a hollow portion; the hollow portion comprising: a receiving end including a tapered socket; an internal interlocking portion adjacent to the tapered socket; and a securing end opposite from the receiving end. 16. The base of claim 15, further comprising: an angled portion at the securing end. 17. The base of claim 15, further comprising: a clocking feature. 18. A shaft for a mounting assembly that couples an accessory to a frame comprising: a shaft configured to be connected to an accessory at a first end, the shaft configured to be received in the hollow portion of the base in an engaged position, the shaft comprising: a tapered boss adjacent to the first end, the tapered boss configured to engage the tapered socket; an external interlocking portion adjacent to the tapered boss configured to engage the internal interlocking portion; and a second end opposite from the first end, the second end including a threaded surface. 19. The shaft according to claim 18, further comprising: a cylindrical portion disposed on the second end adjacent to the threaded surface. 20. The shaft according to claim 19, wherein the cylindrical portion is smooth. 21. The shaft according to claim 18, further comprising: a clocking feature."
  ],
  "description_excerpt": "Technical Field The present disclosure relates to a mounting assembly for use on aircraft, and, in particular, to a mounting assembly attached to the airframe. Description of Related Art An example of an aircraft is a tiltrotor. A tiltrotor aircraft can include nacelle sails that can generate signification bending, torsional, and axial loading into the nacelle airframe structure. The nacelle sails can be installed and removed for maintenance purposes. Conventional mounting assemblies for nacelle sails use a close tolerance, minimal clearance slip fit between a straight, cylindrical shaft and a straight, cylindrical receiver, each having smooth mating surfaces. Manual sanding and smoothing of the shaft is needed to accomplish the close-tolerance, minimal clearance slip fit, which makes producibility difficult. As the nacelle sail is loaded during flight, the clearances start to increase and open up. The slip fit can react to bending loads, but does not address torsional loads. The conventional mounting assembly can include concentric holes drilled through the shaft and receiver and bolts secured therethrough to react to torsional loads during flight. As the nacelle sail is loaded and unloaded during flight, the bolts tend to fail due to fatigue after most flights. Accordingly, there is a need for an improved mounting assembly for a nacelle sail.",
  "cpc": [
    "B64D 29/06",
    "B64C 29/0033",
    "B64C 5/08",
    "B64D 29/02",
    "B64U 20/87",
    "F16B 21/12",
    "F16B 2200/506",
    "F16B 9/026"
  ],
  "ipc": [
    "B64D 29/06",
    "F16B 9/02"
  ],
  "assignees": [
    "BELL HELICOPTER TEXTRON INC"
  ],
  "inventors": [
    "ALCALAN STEPHEN P",
    "SIMEK AARON P",
    "HENRY TYSON T"
  ],
  "filing_date": "2017-11-03",
  "publication_date": "2019-05-09",
  "priority_date": "2017-11-03",
  "application_number": "US-201715802983-A",
  "family_id": "66328280",
  "citations": [
    "FR953618A",
    "US2974965A",
    "US4938094A",
    "US5002422A"
  ]
}