Patents by Inventor Stephen D. Doyle

Stephen D. Doyle 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).

  • Patent number: 4549424
    Abstract: A method and apparatus for forming end panels or shells for two-piece cans includes incorporation of the tooling necessary to form the panel within a double acting press. The tooling includes a fluid actuated hold down sleeve, carried by the outer slide of the press, which is capable of being moved into holding engagement with the metal from which the panel is formed. The inner slide of the press carries a punch which is movable into forming engagement with the metal and the outer slide carries tooling which is capable of blanking the metal against a cut edge carried by the fixed lower platen of the press. The chuck wall of the end panel is then preliminarily formed by the action of the punch drawing the blank around the fixed radius of a die core member fixedly carried by the bottom press platen.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: October 29, 1985
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., Stephen D. Doyle, James A. McClung
  • Patent number: 4535618
    Abstract: A system for forming unitary containers from flat metal stock includes a unique arrangement of both previously known and newly discovered apparatus, including means for blanking and cupping the flat metal stock into individual cups; means for drawing and redrawing the cups and bottom profiling them in one machine; and additional means for trimming, flanging, and beading the containers thus drawn. The system and method include, among other things, the utilization of apparatus which permits drawing, redrawing, and bottom profiling to take place in one press. This is accomplished by carrying draw, redraw, and bottom profile tooling in a single press and by inserting the cups in the press for the draw operation and them removing them and reinserting them for the redraw and bottom profile operations.
    Type: Grant
    Filed: July 23, 1984
    Date of Patent: August 20, 1985
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., Stephen D. Doyle, James A. McClung
  • Patent number: 4516420
    Abstract: A method and apparatus for forming end panels or shells for two-piece cans includes incorporation of the tooling necessary to form the panel within a double acting press. The tooling includes a fluid actuated hold down sleeve, carried by the outer slide of the press, which is capable of being moved into holding engagement with the metal from which the panel is formed. The inner slide of the press carries a punch which is movable into forming engagement with the metal and the outer slide carries tooling which is capable of blanking the metal against a cut edge carried by the fixed lower platen of the press. The chuck wall of the end panel is then preliminarily formed by the action of the punch drawing the blank around the fixed radius of a die core member fixedly carried by the bottom press platen.
    Type: Grant
    Filed: June 10, 1983
    Date of Patent: May 14, 1985
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., Stephen D. Doyle, James A. McClung
  • Patent number: 4506534
    Abstract: Apparatus for removing a drawn container from a draw horn which is carried by the inner slide of a double acting press includes a stripper assembly also carried by the inner slide and capable of controlled axial movement relatively of the draw horn. The draw horn and draw riser have coaxial, centrally disposed bores within which is received an elongate shaft of the stripper assembly. The distal end of the shaft carries a stripper pad while the proximal end is adjustably connected to a pivoting linkage mounted on the inner slide and normally pivoted under pressure by a pneumatically actuated piston so as to maintain the stripper assembly in retracted condition, the pad then forming the bottom of the horn.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: March 26, 1985
    Assignee: Redicon Corporation
    Inventors: Stephen D. Doyle, Joseph D. Bulso, Jr.
  • Patent number: 4503702
    Abstract: A method and apparatus for forming nestable two-piece containers includes forming a cup from a metal blank; redrawing the cup thus formed to approximately one-half its final height while imparting a tapered sidewall thereto by use of a tapered die center; redrawing the container thus formed to its full height while continuing the taper by use of a second tapered die center while simultaneously profiling the bottom of the container thus drawn. The apparatus includes at least two redraw stations, each including a tapered redraw die center and corresponding die. The second of said stations also includes bottom profiling tooling.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: March 12, 1985
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., Stephen D. Doyle
  • Patent number: 4483172
    Abstract: A system for forming unitary containers from flat metal stock includes a unique arrangement of both previously known and newly discovered apparatus, including means for blanking and cupping the flat metal stock into individual cups; means for drawing and redrawing the cups and bottom profiling them in one machine; and additional means for trimming, flanging, and beading the containers thus drawn. The system and method include, among other things, the utilization of apparatus which permits drawing, redrawing, and bottom profiling to take place in one press. This is accomplished by carrying draw, redraw, and bottom profile tooling in a single press and by inserting the cups in the press for the draw operation and then removing them and reinserting them for the redraw and bottom profile operations.
    Type: Grant
    Filed: November 26, 1982
    Date of Patent: November 20, 1984
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., Stephen D. Doyle, James A. McClung
  • Patent number: 4454743
    Abstract: An integrated system and apparatus for completely forming the body of a two-piece can in one press, including performing the operations of cupping, drawing, redrawing, bottom profiling, and trimming. The system includes the concept of performing all of the operations required to form the body of a two-piece can in one press and includes feeding the precoated stock material, either in the form of sheet or coil, through a lubricator and into a feeding apparatus which, in turn, selectively feeds sufficient quantities of the stock material into a press. The press carries the double die necessary to perform the typical blanking and cupping operation and passes the cups out of the press in two lanes onto cup conveyors which feed them back into the press whereupon the draw-redraw dies on both sides of the cup die perform the additional steps of first redraw, second redraw, bottom profile, and trimming. The formed containers are then conveyed to secondary processing stations such as beaders, testers, or palletizers.
    Type: Grant
    Filed: February 2, 1982
    Date of Patent: June 19, 1984
    Assignee: Redicon Corporation
    Inventors: Joseph D. Bulso, Jr., Stephen D. Doyle