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US4373246A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of opening a can with fulcrum-type opener tabs

Assignee: Individual
•
Filing: 1980-06-02
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Granted: 1983-02-15
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Expires: 2000-06-02
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Abstract

Abstract An opener for beverage cans which employ fulcrum-type tab openers is described. Fulcrum-type tab openers effect the rupture opening of a drinking aperture within a can body through displacement of a key which remains affixed to the can. The key is subsequently rotated back to its original position while the contents of the can are consumed. The opener includes an elongated handle and a tab embracing element which abuts the upper and lower surfaces of the key simultaneously allowing the user to gain a mechanical advantage both in opening the aperture and returning the key to its original position. The opener can be integrally configured from a piece of tubing which has been crimped or flattened at one end or, alternatively, from an elongated piece of metal band. Additionally, advertising indicia can be included on the handle as well as attachment means to permit securing the opener to a single can or multiple container pack as a promotional item.

Inventors

  • 👤 Arthur C. VanHoutte
  • 👤 Earl L. Caber

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 17:31
CPC Classifications
B; B67; B67B; B67B7/00; B67B7/40; B67B7/403; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49815; Y10T29/49821

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 392 words
A method of providing leverage in the opening of a beverage containing can employing a fulcrum-type opener characterized by a peripherally weakened closure member integrally formed in the top of said can and a key portion which effects rupture opening of a contents dispensing aperture within said top about the periphery of said closure member and remains permanently affixed thereto after said opening, said key portion initially being disposed substantially parallel to and spaced slightly above a substantially horizontal planar portion of said top, said method comprising the steps of: grasping an elongated handle of an improved hand held opener in the hand of an operator so that one end of said handle projects outwardly therefrom; orienting the can to be opened so that an upwardly depending edge portion defined thereby, which circumferentially encompasses said fulcrum-type opener and extends substantially above said key portion, projects substantially upwardly; securing said can from inadvertent displacement during the opening thereof to avoid spilling the beverage contained therein; maneuvering said hand held opener with respect to said can so that tab embracing means, depending from said extending handle and defining a key portion receiving recess therein opening outwardly from said handle and having an axis of symmetry acutely angularly offset from the axis of elongation of said handle, is simultaneously guided generally downwardly and inwardly toward said fulcrum-type opener, whereby said hand-held opener avoids interference with said upwardly depending edge portion and said key portion is matingly received within said key portion receiving recess in a single, continuous motion to effect mechanical linkage between said hand-held opener and said key portion, said axis of symmetry being substantially parallel to said horizontal planar portion of said top immediately prior to and during said mechanical linkage; angularly displacing said hand-held opener to rotate said key portion from a first, stowed position to a second, load bearing position about a point of connection between said key portion and said top to effect said opening; reciprocally displacing said hand-held opener to rotationally return said key portion to said stowed position wherein said key portion does not interfere with dispensing of said beverage through said opening; and demating said key portion and said hand-held opener by further maneuvering said hand-held opener generally outwardly and upwardly in a single, continuous motion, from said can to again avoid interference with said edge portion.
Claim 2
Independent Claim 392 words
A method of providing leverage in the opening of a beverage containing can employing a fulcrum-type opener characterized by a peripherally weakened closure member integrally formed in the top of said can and a key portion which effects rupture opening of a contents dispensing aperture within said top about the periphery of said closure member and remains permanently affixed thereto after said opening, said key portion initially being disposed substantially parallel to and spaced slightly above a substantially horizontal planar portion of said top, said method comprising the steps of: grasping an elongated handle of an improved hand held opener in the hand of an operator so that one end of said handle projects outwardly therefrom; orienting the can to be opened so that an upwardly depending edge portion defined thereby, which circumferentially encompasses said fulcrum-type opener and extends substantially above said key portion, projects substantially upwardly; securing said can from inadvertent displacement during the opening thereof to avoid spilling the beverage contained therein; maneuvering said hand held opener with respect to said can so that tab embracing means, depending from said extending handle and defining a key portion receiving recess therein opening outwardly from said handle and having an axis of symmetry acutely angularly offset from the axis of elongation of said handle, is simultaneously guided generally downwardly and inwardly toward said fulcrum-type opener, whereby said hand-held opener avoids interference with said upwardly depending edge portion and said key portion is matingly received within said key portion receiving recess in a single, continuous motion to effect mechanical linkage between said hand-held opener and said key portion, said axis of symmetry being substantially parallel to said horizontal planar portion of said top immediately prior to and during said mechanical linkage; angularly displacing said hand-held opener to rotate said key portion from a first, stowed position to a second, load bearing position about a point of connection between said key portion and said top to effect said opening; reciprocally displacing said hand-held opener to rotationally return said key portion to said stowed position wherein said key portion does not interfere with dispensing of said beverage through said opening; and demating said key portion and said hand-held opener by further maneuvering said hand-held opener generally outwardly and upwardly in a single, continuous motion, from said can to again avoid interference with said edge portion.

References Cited (Backward Citations)

US1616653A Cited
US1725726A Cited
US1949763A Cited
US2609715A Cited
US2579930A Cited
US2563227A Cited
FR1067570A Cited
US3724297A Cited
US4034595A Cited
US4120216A Cited
US4253352A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-02-14 1986-08-16 1987-02-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-02-14 1990-08-16 1991-02-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-02-14 1994-08-16 1995-02-15 $7700.00 Window Closed / Lapsed

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