Bung tool

{
  "publication_number": "US5425289A",
  "country": "US",
  "kind": "A",
  "title": "Bung tool",
  "abstract": "A bung tool has a cylindrical body with a four-armed drive portion projecting from one end thereof and a six-armed drive portion projecting from the opposite end thereof, respectively for engagement with different types of bungs. A drive member reciprocates in a square cross-section axial bore through the body, being manually moveable by a handle which projects radially through a slot in the body. The drive lug of an associated drive lever is receivable in the opposite ends of the bore for respectively driving the two drive portions. The drive member reciprocates among two recessed positions respectively spaced from the opposite ends of the bore to allow insertion of the drive lug therein and a drive position projecting from one of the drive portions for driving engagement with a bung cap.",
  "claims": [
    "1. A bung tool comprising: a body, a first bung-engaging drive portion projecting from said body in a first direction and having a first plurality of arms extending transversely of said first direction, a second bung-engaging drive portion configured differently from said first drive portion and projecting from said body in a second direction and having a second plurality of arms extending transversely of said second direction, a third bung-engaging drive portion configured differently from said first and second drive portions and mounted on said body for movement between a retracted position recessed within said body and a drive position projecting from said body, and handle means coupled to said third drive portion for facilitating manual movement thereof between the retracted and drive positions thereof.",
    "2. The tool of claim 1, wherein said third drive portion projects from said body in said first direction.",
    "3. The tool of claim 2, wherein said third drive portion projects through said first drive portion.",
    "4. The tool of claim 1, wherein said body includes means mounting said third drive portion for reciprocating movement between the retracted and drive positions thereof.",
    "5. The tool of claim 4, wherein said third drive portion reciprocates parallel to said first direction.",
    "6. The tool of claim 5, wherein said first and second directions are substantially coaxial.",
    "7. A bung tool comprising: a body, a first bung-engaging drive portion projecting from said body in a first direction and having a first plurality of arms extending transversely of said first direction, a second bung-engaging drive portion configured differently from said first drive portion and projecting from said body in a second direction and having a second plurality of arms extending transversely of said second direction, said body having a bore extending therethrough and shaped and dimensioned for receiving in the opposite ends thereof a drive lug of an associated drive lever, and a drive member disposed in said bore for movement therein among first and second and third positions, said drive member in its first position being recessed within said body and spaced from one end of said bore a distance sufficient to accommodate reception of a drive lug therein, said drive member in its second position being recessed within said body and spaced from the other end of said bore a distance sufficient to accommodate reception of a drive lug therein, said drive member in its third position projecting from said body at said one end of said bore and spaced from the other end of said bore a distance sufficient to accommodate reception of a drive lug therein.",
    "8. The tool of claim 7, wherein said bore is substantially square in transverse cross section.",
    "9. The tool of claim 7, wherein said body has a slot formed therein communicating with said bore, and further comprising a handle member coupled to said drive member and projecting through said slot to facilitate manual movement of said drive member among the positions thereof.",
    "10. The tool of claim 7, wherein said first and second directions are substantially coaxial.",
    "11. The tool of claim 10, wherein said drive member in its third position projects through said first drive portion.",
    "12. The tool of claim 7, and further comprising detent means yieldably retaining said drive member in each of its second and third positions.",
    "13. The tool of claim 7, wherein said first plurality of arms is different in number from said second plurality of arms."
  ],
  "description_excerpt": "1. Field of the Invention The present invention relates to tools for inserting and removing screw-in drum plugs or bungs. In particular, the invention relates to a bung socket of the type which is adapted to be used with an associated drive lever, such as a ratchet wrench, a breaker bar or the like. 2. Description of the Prior Art Bungs are closures for access openings in tanks, drums, pipes and the like. Heretofore such bungs have commonly been provided with a circular cavity or recess with a diametrically extending rib thereacross or projections extending radially thereinto from diametrically opposed locations. Tools have been provided for operating such bungs, the tool including a pair of arms which straddle the rib or projections on the bung and engage them for rotation. One such tool is sold by Snap-on Tools Corporation under Model A172A. That tool is designed to work with a number of different variants of the above-described bung configuration. Many bungs are provided with an internally threaded central well which is closed by a separate cap. The aforementioned Snap-on Tool has a spring-loaded central projection adapted for engagement with a recess in the cap, this projection being retractable against the urging of a bias spring when the tool is being used for rotating the bung itself.\n\nMore recently, a number of different styles of bung have come into use. These bungs have a drive recess in the end wall thereof, the recess having a number of laterally outwardly extending lobes of various configurations. Fundamentally, most of the bungs are either of a four-lobed or a six-lobed configuration.",
  "cpc": [
    "C07D 213/82",
    "B25B 13/48",
    "B25B 13/50",
    "B25B 27/00",
    "B67B 7/42"
  ],
  "ipc": [
    "B25B 13/48",
    "B25B 13/50",
    "B67B 1/06",
    "B67B 7/06",
    "B67B 7/42",
    "C07D 213/82"
  ],
  "assignees": [
    "SNAP ON TOOLS CORP"
  ],
  "inventors": [
    "IWINSKI DEAN J"
  ],
  "filing_date": "1993-10-21",
  "publication_date": "1995-06-20",
  "grant_date": "1995-06-20",
  "priority_date": "1993-10-21",
  "application_number": "US-13909393-A",
  "family_id": "22485093",
  "citations": [
    "CA477380A",
    "CA725392A",
    "GB2193134A",
    "US2383573A",
    "US2421665A",
    "US2445978A",
    "US2643566A",
    "US3564949A",
    "US3733938A",
    "US4625599A",
    "US4759122A",
    "US5099726A",
    "US5134905A",
    "US5168782A",
    "US5172615A"
  ]
}