Chain lift and derailleur hold tool for bicycles

{
  "publication_number": "US10227107B1",
  "country": "US",
  "kind": "B1",
  "title": "Chain lift and derailleur hold tool for bicycles",
  "abstract": "A method and tool provide for removal of a rear bicycle wheel of a bicycle having a rear derailleur. A securing device maintains the tool in a fixed position with respect to the bicycle. A chain disengagement element is moveably attached to the securing device whereby moving the chain disengagement element moves a portion of the chain away from an axel mounted gear cassette sufficiently to completely disengage the chain from the axel mounted cassette. This allows for easy removal of the wheel.",
  "claims": [
    "1. A tool for use with a bicycle having a rear derailleur secured to a bicycle frame at a derailleur pivot point, the derailleur pivot point defining an aperture, the rear derailleur maintaining a chain in selective engagement with a wheel having an axel mounted cassette with a plurality of cogs, wherein the wheel is securable to the bicycle frame having frame elements that include chain stays, the tool comprising: a securing device to maintain the tool in a fixed position with respect to the bicycle; and a chain disengagement element moveably attached to the securing device, wherein moving the chain disengagement element moves a portion of the chain away from the axel mounted cassette sufficiently to completely disengage the chain from the axel mounted cassette.",
    "2. The tool in accordance with claim 1, further comprising a locking mechanism to prevent the chain disengagement element from moving with respect to the securing device.",
    "3. The tool in accordance with claim 1, further comprising a derailleur hold element that is movable with respect to the securing device to pivot the rear derailleur.",
    "4. The tool in accordance with claim 3, wherein the derailleur hold element is lockable to maintain the rear derailleur in a selected position.",
    "5. The tool in accordance with claim 1, wherein the securing device includes a pin that is insertable into the aperture defined by the derailleur pivot point.",
    "6. The tool in accordance with claim 5, wherein chain disengagement element rotates about the pin.",
    "7. The tool in accordance with claim 5, wherein the pin is removable from the securing device.",
    "8. The tool in accordance with claim 7, wherein the pin is selected from a group of pins of different sizes that are stored with a cavity defined by the tool.",
    "9. The tool of claim 1, wherein the chain disengagement element includes: a first portion having a first end and a second end, the first end pivotable with respect to the securing device, the second end having a laterally extending element, a second portion having a first end and a second end, the first end of the second portion being pivotally secured to the laterally extending element of the second end of the first portion, a third portion having a first end and a second end, the first end of the third portion being pivotally secured to the second end of the second portion.",
    "10. The tool of claim 9, wherein the third portion pivots longitudinally and laterally with respect to the second portion.",
    "11. The tool of claim 1, wherein the chain disengagement element has a distal end portion that defines a channel to receive the chain.",
    "12. The tool of claim 9, wherein the securing device includes: a first portion having a first end and a second end, the first end being pivotable with respect to the securing device, a second portion having a first end and a second end, the first end of the second portion being pivotally secured to the second end of the first portion, a first support element projecting laterally from the first portion, a second support element projecting radially from the second portion.",
    "13. The tool of claim 12, wherein the first support element is padded.",
    "14. The tool of claim 12, wherein the second support element is padded.",
    "15. A tool having, comprising: a securing device including a pivot point and a pin associated with the pivot point, the pin extending laterally from the pivot point; a chain lift including a first portion having a first end and a second end, the first end being pivotable about the pivot point and pin of the securing device, the second end extending laterally in the same direction as the pin, a second portion having a first end and a second end, the first end of the second portion being pivotally secured to the laterally extending element of the second end of the first portion, and a third portion having a first end and a second end, the first end of the third portion being pivotally secured to the second end of the second portion, the third portion pivotable longitudinally and laterally with respect to the second portion, and the third portion having a distal end portion that defines a channel; and a locking mechanism including a first portion having a first end and a second end, the first end being pivotable about the pivot point and pin of the securing device, a second portion having a first end and a second end, a first support element projecting laterally from the first portion, the first end of the second portion being pivotally secured to the second end of the first portion, and a second support element projecting laterally in the same direction as the first support element and for a greater distance."
  ],
  "description_excerpt": "The disclosure is generally related to a mechanical hand tool, and more particularly to a tool for removing a chain from a gear such as a bicycle chain from a rear wheel gear cassette.\n\nCycling is a major global activity. Approximately 80 million bicycles are sold each year (12 million in the USA). Like most mechanical implements, bicycles require maintenance and repair. Common tasks, such as attaching a bicycle to an indoor trainer, regular maintenance, and replacement of a flat tire, require the removal of a wheel having the flat tire. While removal of a front bicycle wheel is relatively simple, removal of a rear wheel from a bicycle having a rear derailleur is widely considered a difficult and dirty task.\n\nThe rear derailleur is part of a gear shifting system, wherein the rear derailleur positions a moving chain laterally from gear to gear as desired, while maintaining appropriate tension on the chain to allow it to stay engaged with different sized gears without creating slack in the chain. Since the rear derailleur is spring loaded to maintain chain tension, it must be forced rearward and held away from the gears so that the wheel can be disengaged from the chain and the bicycle frame. Once the wheel is removed, the chain dangles and rests on the bicycle frame marring it with grease/oil and scratching the finish. Re-installing the rear wheel is typically more difficult than removal. Most often, such repairs are performed by a single person with two hands.",
  "cpc": [
    "B62J 11/22",
    "B62M 9/124",
    "B62M 9/125",
    "B62M 9/128"
  ],
  "ipc": [
    "B62M 9/124",
    "B62M 9/125",
    "B62M 9/128"
  ],
  "assignees": [
    "Radian Technologies Corp"
  ],
  "inventors": [
    "Fernando Tages"
  ],
  "filing_date": "2018-09-07",
  "publication_date": "2019-03-12",
  "grant_date": "2019-03-12",
  "priority_date": "2018-09-07",
  "application_number": "US-201816124824-A",
  "family_id": "65633285",
  "cited_by_count": 3,
  "citations": [
    "US3840251A",
    "US3862487A",
    "US4135727A",
    "US4167125A",
    "US4681557A",
    "US5003656A",
    "US5888159A",
    "US20030056294A1",
    "US7467477B1"
  ]
}