Patents by Inventor Hans H. Diekhoff
Hans H. Diekhoff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6010026Abstract: A thin wall metal can is described having a converging neck portion and cylindrical chimney with a threaded sleeve encircling the chimney and restrained from rotation on the chimney by splines on an inner surface of the sleeve firmly engaged against an outwardly projecting shoulder on the can between the neck portion and chimney. The sleeve receives a threaded closure for closing and sealing the can.Type: GrantFiled: December 19, 1997Date of Patent: January 4, 2000Assignee: Aluminum Company of AmericaInventors: Hans H. Diekhoff, Charles L. Jordan
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Patent number: 6010028Abstract: Thin wall metal cans are described having threaded necks attached thereto for receiving threaded closure to seal contents in the cans. Techniques for forming such threaded cans are also provided.Type: GrantFiled: December 9, 1997Date of Patent: January 4, 2000Assignee: Aluminum Company of AmericaInventors: Charles L. Jordan, Hans H. Diekhoff
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Patent number: 5822843Abstract: Thin wall metal cans are described having threaded necks for receiving threaded closure to seal contents in the cans. Techniques for forming such threaded cans are also provided.Type: GrantFiled: December 20, 1996Date of Patent: October 20, 1998Assignee: Aluminum Company of AmericaInventors: Hans H. Diekhoff, Andrew F. Clarke
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Patent number: 5778723Abstract: A method for necking an end of a metal container include effecting initial deformation, generally radially inwardly, of an axial portion to establish a necked-in generally convex transition portion and an adjacent portion disposed between the transition portion and the container end which is initially generally cylindrical. Both portions are of reduced diameter with respect to the original can body diameter. Sequentially, through the series of formation steps, the portion to be necked-in is further reduced in diameter to produce an outwardly generally convex portion disposed in underlying relationship with respect to an outwardly concave portion. A generally, radially, outwardly directed flange may be established within the end section of the necked-in portion. Apparatus to perform the foregoing forming steps consists of a plurality of die means which are subjected to relative axial movement and contact and reshape the exterior of the container portion that is to be necked-in.Type: GrantFiled: September 18, 1996Date of Patent: July 14, 1998Assignee: Aluminum Company of AmericaInventor: Hans H. Diekhoff
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Patent number: 5718352Abstract: Thin wall metal cans are described having threaded necks for receiving threaded closure to seal contents in the cans. Techniques for forming such threaded cans are also provided.Type: GrantFiled: November 22, 1994Date of Patent: February 17, 1998Assignee: Aluminum Company of AmericaInventors: Hans H. Diekhoff, Andrew F. Clarke
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Patent number: 5713235Abstract: A method and apparatus for necking an open end of a metal container in which annular grooves are provided on the inner surface of the necking dies to abate sticking of cans in the dies during the necking process.Type: GrantFiled: August 29, 1996Date of Patent: February 3, 1998Assignee: Aluminum Company of AmericaInventor: Hans H. Diekhoff
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Patent number: 5557963Abstract: A method for necking an end of a metal container include effecting initial deformation, generally radially inwardly, of an axial portion to establish a necked-in generally convex transition portion and an adjacent portion disposed between the transition portion and the container end which is initially generally cylindrical. Both portions are of reduced diameter with respect to the original can body diameter. Sequentially, through the series of formation steps, the portion to be necked in is further reduced in diameter to produce an outwardly generally convex portion disposed in underlying relationship with respect to an outwardly concave portion. A generally, radially, outwardly directed flange may be established within the end section of the necked-in portion. Apparatus to perform the foregoing forming steps consists of a plurality of die means which are subjected to relative axial movement and contact and reshape the exterior of the container portion that is to be necked in.Type: GrantFiled: June 14, 1994Date of Patent: September 24, 1996Assignee: Aluminum Company of AmericaInventor: Hans H. Diekhoff
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Patent number: 5522248Abstract: A method of forming a drawn metal cup for a container body which includes drawing a cup having a circular boss in its base wall, redrawing the cup and forming a pressure resistant profile in its base wall.Type: GrantFiled: January 10, 1995Date of Patent: June 4, 1996Assignee: Aluminum Company of AmericaInventors: Hans H. Diekhoff, George L. Smith, Jr.
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Patent number: 5487295Abstract: A method of forming a drawn metal cup for a container body which includes drawing a cup having a circular boss in its base wall, redrawing the cup and forming a pressure resistant profile in its base wall.Type: GrantFiled: March 3, 1995Date of Patent: January 30, 1996Assignee: Aluminum Company of AmericaInventors: Hans H. Diekhoff, George L. Smith, Jr.
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Patent number: 5394727Abstract: A method of forming a drawn metal cup for a container body which includes drawing a cup having a circular boss in its base wall, redrawing the cup and forming a pressure resistant profile in its base wall.Type: GrantFiled: August 18, 1993Date of Patent: March 7, 1995Assignee: Aluminum Company of AmericaInventors: Hans H. Diekhoff, George L. Smith, Jr.
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Patent number: 5355710Abstract: A method for necking an end of a metal container include effecting initial deformation, generally radially inwardly, of an axial portion to establish a necked-in generally convex transition portion and an adjacent portion disposed between the transition portion and the container end which is initially generally cylindrical. Both portions are of reduced diameter with respect to the original can body diameter. Sequentially, through the series of formation steps, the portion to be necked in is further reduced in diameter to produce an outwardly generally convex portion disposed in underlying relationship with respect to an outwardly concave portion. A generally, radially, outwardly directed flange may be established within the end section of the necked-in portion. Apparatus to perform the foregoing forming steps consists of a plurality of die means which are subjected to relative axial movement and contact and reshape the exterior of the container portion that is to be necked in.Type: GrantFiled: July 31, 1992Date of Patent: October 18, 1994Assignee: Aluminum Company of AmericaInventor: Hans H. Diekhoff
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Patent number: 5351852Abstract: A drawn container is disclosed having a substantially cylindrical sidewall extending upwardly from an integral base portion to form an open neck which is double seamed with a top end closure. The base portion has a downwardly extending, generally U-shaped, circumferential nose portion, the outside surface of which defines the plane of the base of the container on which the container normally sets. The nose portion is defined by a radius between a substantially vertical inner wall and an outside wall. The outside wall extends from a lower portion of the sidewall through a convex lower body radius to a concave profile radius disposed above the nose portion. A frustoconical portion is provided between the convex lower body radius and the concave profile radius. The frustoconical portion forms a lower body angle of at least 30.degree. with respect to the plane of the base of the container.Type: GrantFiled: October 10, 1991Date of Patent: October 4, 1994Assignee: Aluminum Company of AmericaInventors: Andrew B. Trageser, Gary L. Myers, Hans H. Diekhoff
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Patent number: 4578007Abstract: A method for reforming at least a portion of a multiple necked-in can body to provide at least an essentially right cylindrical-shaped portion adjacent a last necked-in portion by contacting at least the portion adjacent above and below the last necked-in portion with a rotating roll and providing relative movement of the periphery of the can body with respect to the rotating roll.Type: GrantFiled: March 12, 1984Date of Patent: March 25, 1986Assignee: Aluminum Company of AmericaInventor: Hans H. Diekhoff
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Patent number: D384888Type: GrantFiled: March 25, 1996Date of Patent: October 14, 1997Assignee: Aluminum Company of AmericaInventor: Hans H. Diekhoff