Stand for self contained cartridge and method for manually dispensing an expandable cushioning wrap
View Patent ↗An unpowered, manually operable apparatus for dispensing cushioning wrap material drawn concurrently from a roll of separator material and a self-contained cartridge that includes a roll of expandable sheet material. The rolls are supported on a stand for rotation about respective parallel, spaced-apart axes. In addition to the roll, the cartridge includes a tensioning assembly and support panels that abut respective ends of the roll. The tensioning assembly and the support panels cooperate with the stand to control rotational resistance of the roll. The rotational resistance causes the expandable sheet material to expand in length and thickness as it is manually pulled from the stand with the separator material, and support surfaces on the stand hold the cartridge and the separator roll in position. When the cartridge containing the expandable sheet material is depleted, the cartridge is readily removed and replaced.
1. A self-contained material supply cartridge, comprising
a roll of expandable sheet material having a slit pattern that forms an array of openings as the sheet material is drawn from the roll under tension;
a pair of laterally-spaced end panels between which the roll is mounted for rotation relative to the end panels about an axis of rotation for dispensing of the sheet material, the end panels having lower edge portions that project radially beyond the radius of the roll on each side of a plane that includes the axis of rotation, the end panels being configured to support the roll for rotation during the entire dispensing;
where the end panels are held in abutment with respective ends of the roll by a connector that extends between the end panels, the connector having a collar that bears directly against the side of the end panel opposite the roll, and the end panel directly engages the end of the roll;
where the connector is adjustable to vary pressure applied to the ends of the roll by the end panels; and
where the roll includes a hollow core around which the expandable sheet material is wound and through which the connector is received, and the connector includes end caps received in respective ends of the hollow core and a flexible cord connects the end caps, whereby rotating one end cap relative to the other twists and shortens the flexible cord.
2. The cartridge as set forth in claim 1 , where the roll is made of paper and the end panels are cardboard.
3. A stand for dispensing an expanded sheet material from a self-contained material supply cartridge having a roll of expandable sheet material that can be drawn from the roll in a downstream direction relative to the stand, the stand comprising
a base member having first and second upwardly-opening slots laterally-spaced apart along a first axis and adapted to receive lower edge portions of support panels of a material supply cartridge, and third and fourth upwardly-opening slots laterally-spaced apart along a second axis spaced from and parallel to the first axis and adapted to receive an axle for a roll of separating sheet material,
where the slots each have a transversely-extending surface on at least a downstream side of the slot to retain respective rolls as expandable sheet material and separating sheet material are concurrently drawn from the rolls.
4. The stand as set forth in claim 3 , where base support member is generally planar and the slots are formed by first and second brackets mounted to the base support member, each bracket having an L-shape surface on a downstream side with a leg extending inwardly toward the opposing bracket.
5. The stand as set forth in claim 4 , where each bracket has an L-shape surface on an upstream side opposite the downstream side with a leg extending inwardly toward the opposing bracket.
6. The stand as set forth in claim 5 , where the upstream and downstream L-shape surfaces form respective portions of a continuous U-shape surface.
7. The stand as set forth in claim 3 , where the third and fourth upwardly-opening slots are defined by respective brackets with upwardly-opening slots.
8. The stand as set forth in claim 3 in combination with a self-contained material supply cartridge that includes a roll of expandable sheet material, a pair of laterally-spaced end panels to which the roll is mounted between the end panels for rotation relative to the end panels about an axis of rotation, the end panels having lower edge portions that project radially beyond the radius of the roll on each side of a plane that includes the axis of rotation, where the end panels are held in abutment with respective ends of the roll by a connector that extends between the end panels, the connector having a collar that bears directly against the side of the end panel opposite the roll, and the end panel directly engages the end of the roll.
9. The combination as set forth in claim 8 , in combination with a roll of separating sheet material made of paper mounted on an axle for receipt in the third and fourth slots.