Gusset board with collapsible nose
AssigneePearl Technologies, Inc.
InventorsRobert J. Tewksbury, Laurent Cros, Gary Peacock
Life of this patent
Estimating the term…
Abstract
Gusset boards of a blown film extrusion apparatus have nose portions that can be positioned in the path of a tube of blown film traveling between the nose portions where the nose portions engage with opposite sides of the tube of blown film and form gussets in the tube of blown film. The nose portions of the gusset boards can also reduce their width dimensions which enables the nose portions to be moved away from the path of blown film traveling between the gusset boards when gussets formed in the opposite sides of the tube of blown film are not needed.
Claims18
A gusset board configured to fold a gusset in a tube of film, the gusset board comprising:
- a base portion of the gusset board;
- a base sliding surface on the base portion, the base sliding surface being fixed stationary on the gusset board;
- a nose portion of the gusset board;
- a nose sliding surface on the nose portion of the gusset board, the nose sliding surface is positioned in substantially a same plane as the base sliding surface, the nose sliding surface having a general triangular configuration with a base edge and an opposite apex end;
- the nose portion of the gusset board having a rear surface on an opposite side of the nose portion of the gusset board from the nose sliding surface;
- and,
- a mast having a length with opposite proximal and distal ends, the proximal end of the mast being connected to the rear surface of the nose portion of the gusset board at the apex end of the nose sliding surface, the mast being configured to be moved between a first position of the mast relative to the rear surface of the nose portion of the gusset board where the mast extends outwardly from the rear surface of the nose portion of the gusset board and a second position of the mast relative to the rear surface of the nose portion of the gusset board where the mast extends along the rear surface of the nose portion of the gusset board.
A gusset board configured to fold a gusset in a tube of film, the gusset board comprising:
- a base portion of the gusset board;
- a base sliding surface on the base portion, the base sliding surface being fixed stationary on the gusset board;
- a nose portion of the gusset board;
- a nose sliding surface on the nose portion of the gusset board, the nose sliding surface having a general triangular configuration with a base edge and an opposite apex end, the nose sliding surface being connected to the base portion of the gusset board for moving between a first position of the nose sliding surface relative to the base portion of the gusset board where the nose sliding surface is positioned in substantially a same plane as the base sliding surface and a second position of the nose sliding surface relative to the base portion of the gusset board where the nose sliding surface is positioned at an angle relative to the base sliding surface;
- the nose portion of the gusset board having a rear surface on an opposite side of the nose portion of the gusset board from the nose sliding surface;
- a mast connected to the rear surface of the nose portion of the gusset board, the mast being configured to be moved between a first position of the mast relative to the rear surface of the nose portion of the gusset board and a second position of the mast relative to the rear surface of the nose portion of the gusset board, wherein in the first position of the mast relative to the rear surface of the nose portion of the gusset board the mast extends outwardly from the rear surface of the nose portion of the gusset board, and in the second position of the mast relative to the rear surface of the nose portion of the gusset board the mast extends along the rear surface of the nose portion of the gusset board;
- a first panel connected between the mast and a first side edge of the nose portion of the gusset board;
- a second panel connected between the mast and a second side edge of the nose portion of the gusset board;
- the first panel being moveable between a first position of the first panel relative to the rear surface of the nose portion of the gusset board and a second position of the first panel relative to the rear surface of the nose portion of the gusset board, and the second panel being moveable between a first position of the second panel relative to the rear surface of the nose portion of the gusset board and a second position of the second panel relative to the rear surface of the nose portion of the gusset board, wherein in the first positions of the first panel and the second panel relative to the rear surface of the nose portion of the gusset board the first panel and the second panel extend outwardly from the rear surface of the nose portion of the gusset board and in the second positions of the first panel and the second panel relative to the rear surface of the nose portion of the gusset board the first panel and the second panel extend along the rear surface of the nose portion of the gusset board;
- and,
- the mast having a length with opposite proximal and distal ends, the proximal end of the mast being connected to the rear surface of the nose portion of the gusset board at the apex end of the nose sliding surface.
A gusset board configured to fold a gusset in a tube of film, the gusset board comprising:
- a base portion of the gusset board;
- a base sliding surface on the base portion, the base sliding surface being fixed stationary on the gusset board;
- a nose portion of the gusset board;
- a nose sliding surface on the nose portion of the gusset board, the nose sliding surface is positioned in substantially a same plane as the base sliding surface, the nose sliding surface having a general triangular configuration with a base edge and an opposite apex end;
- the nose portion of the gusset board having a rear surface on an opposite side of the nose portion of the gusset board from the nose sliding surface;
- and,
- a mast having a length with opposite proximal and distal ends, the proximal end of the mast being connected to the rear surface of the nose portion of the gusset board at the apex end of the nose sliding surface, the mast being configured to be moved between a first position of the mast relative to the rear surface of the nose portion of the gusset board and a second position of the mast relative to the rear surface of the gusset board, in the first position of the mast relative to the rear surface of the nose portion of the gusset board the mast extends outwardly from the rear surface and in the second position of the mast relative to the rear surface of the nose portion of the gusset board the mast extends along the rear surface.
A gusset board configured to fold a gusset in a tube of film, the gusset board comprising:
- a base portion of the gusset board;
- a base sliding surface on the base portion the base sliding surface being fixed stationary on the gusset board;
- a nose portion of the gusset board;
- a nose sliding surface on the nose portion of the gusset board, the nose sliding surface being connected to the base portion of the gusset board for movement between a first position of the nose sliding surface relative to the base portion of the gusset board where the nose sliding surface is positioned in substantially a same plane as the base sliding surface and a second position of the nose sliding surface relative to the base portion of the gusset board where the nose sliding surface is positioned away from the plane of the base sliding surface;
- the nose portion of the gusset board having a rear surface on an opposite side of the nose portion of the gusset board from the nose sliding surface;
- a mast on the rear surface of the nose portion of the gusset board, the mast being configured to be moved between a first position of the mast relative to the rear surface of the nose portion of the gusset board and a second position of the mast relative to the rear surface of the nose portion of the gusset board, in the first position of the mast relative to the rear surface of the nose portion of the gusset board the mast extends outwardly from the rear surface and in the second position of the mast relative to the rear surface of the nose portion of the gusset board the mast extends along the rear surface;
- the nose sliding surface having a general triangular configuration with a base edge and an opposite apex end;
- the nose sliding surface being connected to the base portion of the gusset board with the base edge of the nose sliding surface positioned adjacent the base sliding surface;
- and,
- the mast having a length with opposite proximal and distal ends, the proximal end of the mast being connected to the rear surface of the nose portion of the gusset board at the apex end of the nose sliding surface.
Dependencies are inferred from the claim text.