Bushing and toothed wheel assembly with preferred rotation

{
  "publication_number": "US6599053B1",
  "country": "US",
  "kind": "B1",
  "title": "Bushing and toothed wheel assembly with preferred rotation",
  "abstract": "An assembly (10) of a tapered bushing (14) and a toothed wheel (12), having a preferred direction of rotation. The assembly (10) having on each face (22, 24) a hole or set of holes H 1, H 2 containing surfaces which interact with a threaded rod (26) for mating and/or separating of the assembly (10) form either face (22, 24). In a preferred embodiment of the invention, the assembly (10) will have two mating holes and one separation hole on each face (22, 24) of the assembly (10). This assembly (10) allows ease of mating and/or separating the assembly when access is limited to only one face of the assembly.",
  "claims": [
    "1. An assembly (10) of a toothed wheel (12), a tapered bushing(l 4), and a threaded rod (26); the toothed wheel (12), having a preferred direction of rotation about an axis, and having a tapered hole (16) forming at least one tapered surface (18) in the wheel (12) and forming a first opening (W 1) and a second opening (W 2), the first opening being larger than the second opening; the tapered bushing (14) having a least one tapered surface (20), the tapered surface (20) being capable of a mating relationship with the wheel tapered surface (18); the assembly (10) having a first face (22) and a second face (24) spaced apart from one another along an axis and when the tapered surfaces (18, 20) are in a mating relationship, the first opening (W 1) of the wheel tapered hole (16) is in proximity to the first face (22) of the assembly (10) and a second opening (W 2) of the wheel tapered hole (16) is in proximity to second face (24) of the assembly (10); the assembly (10) having at least one first hole (H 1) for receiving the threaded rod (26), the hole (H 1) extending at least partially along the mating surfaces from the first face (22) of the assembly (10) toward the second face (24) of the assembly (10), the hole (H 1) being formed in part by a groove (28) located in the toothed wheel (12) and in part by a groove (30) located in the bushing (14) wherein the wheel groove (28) has a length as measured along the mating surfaces at least as great as the length of the bushing groove (30); the assembly (10) being characterized by: the assembly (10) having at least one second hole (H 2) for receiving the threaded rod (26), the hole (H 2) extending at least partially along the mating surfaces from the second face (24) of the assembly (10) toward the first face (22) of the assembly (10), the hole (H 2) being formed in part by a groove (32) located in the toothed wheel (12) and in part by a groove (34) located in the bushing (14), wherein the bushing groove (34) has a length as measured along the mating surfaces at least as great as the length of the wheel groove (32) and wherein the wheel groove (28) partially forming the first hole (H 1) and the bushing groove (34) partially forming the second hole (H 2) are identical in configuration and the bushing groove (30) partially forming the first hole (H 1) and the bushing groove (32) partially forming the second hole (H 2) are identical in configuration.",
    "2. An assembly (10) as set forth in claim 1 wherein the wheel groove (28) partially forming the first hole (H 1) and the bushing groove (34) partially forming the second hole (H 2) have threads (52) for receiving a threaded rod (26).",
    "3. An assembly (10) as set forth in claim 2, wherein the bushing groove (30) of the at least one first hole (H 1) terminates in a surface (48) to form the bushing groove as a blind half hole and the wheel groove (32) of the at least one second hole (H 2) terminates in a surface (50) to form the wheel groove (32) as a blind half hole.",
    "4. An assembly (10) as set forth in claim 1 wherein the at least one first hole (H 1) is connected to the at least one second hole (H 2) by a passage (40) smaller in cross-sectional area than the interconnected holes (H 1, H 2).",
    "5. An assembly (10) as set forth in claim 1 wherein the surfaces adjacent the grooves (28, 30) of the first hole (H 1) on the first face (22) include a shoulder (54) adjacent the bushing groove (30) formed by the bushing groove (30) and the surface of the bushing (14) and the wheel groove (28) has threads (52) and the surfaces adjacent the grooves (32, 34) of the second hole (H 2) on the second face (24) include a shoulder (54) adjacent the wheel groove (32) formed by the wheel groove (32) and the surface of the wheel (12) and the bushing groove (34) has threads (52).",
    "6. An assembly (10) as set forth in claim 1 wherein the first face (22) of the assembly (10) has a separation hole formed from a groove in the toothed wheel (12) and a groove in the bushing (14) and the second face (24) of the assembly (10) has a separation hole formed from a groove in the toothed wheel (12) and a groove in the bushing (14).",
    "7. An assembly (10) as set forth in claim 6 wherein one of the grooves partially forming one of the separation holes has an shoulder (54) adjacent to the groove and the other groove partially forming the separation hole is threaded and has a cavity (38) beginning at the face (22) or (24) of the assembly (10) and extending partially along the groove.",
    "8. An assembly (10) as set forth in claim 6 wherein on the first face (22) of the assembly (10) has two first holes (H 1) and a separation hole and the second face (24) of the assembly (10) has two second holes (H 2) and a separation hole."
  ],
  "description_excerpt": "This invention relates to an assembly consisting of a tapered bushing and a toothed wheel, with a preferred direction of rotation. More particularly, this invention relates to an assembly, which allows the bushing and the toothed wheel to be mated together, or separated, using a threaded rod inserted and tightened from either side of the assembly.\n\nAssemblies using conventional tapered bushings to fasten pulleys, sheaves, or gears to hafts are widely used. Tapered bushings use less space on an axial shaft than other types of bushings and are favored for this reason. For example, the QD bushing and wheel assembly requires additional axial space due to the flange area of the bushing that protrudes from the ace of the wheel. Assemblies using tapered bushings have a female mating surface on the wheel and a male mating surface on the bushing. The tapered bushing is axially split and contractible about the shaft which it receives. As the male mating surface of the bushing is mated with the female mating surface of the wheel, the bushing contracts around the shaft. Thus, by mating the bushing and the wheel, the bushing becomes affixed to the shaft and the wheel affixed to the bushing. However, difficulty is often encountered in the process of mating the bushing and the wheel, and in separating the bushing from the wheel once mated. Prior art improvements to these assemblies have focused on designs that aid in mating or separating the bushing and the wheel. In U.S. Pat. No. 2,402,743 entitled “MOUNTING FOR SHEAVES, ETC.”, granted Jun.",
  "cpc": [
    "F16D 1/096",
    "F16B 2200/509",
    "Y10T 403/7052",
    "Y10T 403/7067"
  ],
  "ipc": [
    "F16D 1/091",
    "F16D 1/096"
  ],
  "assignees": [
    "GOODYEAR TIRE & RUBBER"
  ],
  "inventors": [
    "JUDSON GAROLD MARTIN"
  ],
  "filing_date": "1999-07-15",
  "publication_date": "2003-07-29",
  "grant_date": "2003-07-29",
  "priority_date": "1999-07-15",
  "application_number": "US-1863201-A",
  "family_id": "27608999",
  "citations": [
    "DE2027871A1",
    "US2402743A",
    "US2763158A",
    "US3677583A",
    "US3682505A",
    "US3851977A",
    "US4338036A",
    "US4421498A",
    "US4471846A",
    "US4494889A",
    "US4620814A",
    "US4624597A",
    "US4781661A",
    "US5304101A"
  ]
}