Patents Assigned to Corrugated Drum Systems, Inc.
  • Carton with integral closures
    Patent number: 4392607
    Abstract: A carton (20) having a body portion (21) and integral self-locking closures (22, 23) at its ends. The closures have outer flaps (43, 44, 87, 90) and inner flaps (39, 40, 83, 84), with slots (63, 70, 103, 104, 106, 107) to engage lock tabs (61, 62, 66, 67, 74, 75, 81, 82, 112, 113, 116, 117), which retain the closures in closed position. An internal liner (122) may be provided, and certain tabs (212, 213, 216, 217) and slots (203, 204, 206, 207) may be made convergent if desired.
    Type: Grant
    Filed: March 19, 1982
    Date of Patent: July 12, 1983
    Assignee: Corrugated Drum Systems, Inc.
    Inventor: David Perkins, Jr.
  • Carton with removable top
    Patent number: 4359182
    Abstract: A carton having a body (22) and a cover (26) removable therefrom, the body having an even number of panels (28) intersecting at an even number of vertices, and having a plurality of locking tabs (44) located at the tops of alternate vertices and folded outwardly to extend toward the bottom of the body, and the cover having a flat panel (30) with a like number of sides intersecting at a like number of vertices, and a plurality of cover tabs (76, 78, 80) located at said vertices and folding inwards to extend toward said panel.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: November 16, 1982
    Assignee: Corrugated Drum Systems, Inc.
    Inventor: David Perkins, Jr.