Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
134 words
An improved paperboard blank having a double-ended straight hinge line between two contiguous panels which are folded toward each other along the hinge line, the improvement comprising: a first relief cut at a point on said hinge line remote from a first end threof and extending only into one of the panels at a direction generally transverse to the hinge line; a second relief cut at a point on said hinge line remmote from a second end thereof and extending only into the other panel at a direction generally transverse to the hinge line; and a path of decreased folding resistance extending along said hinge line between said first and second relief cuts, whereby folding of said panel is confined to said hinge line and is preventing from diverging to a line skewed therefrom.
Claim 2
Dependent Claim
134 words
An improved paperboard blank having a double-ended straight hinge line between two contiguous panels which are folded toward each other along the hinge line, the improvement comprising: a first relief cut at a point on said hinge line remote from a first end threof and extending only into one of the panels at a direction generally transverse to the hinge line; a second relief cut at a point on said hinge line remmote from a second end thereof and extending only into the other panel at a direction generally transverse to the hinge line; and a path of decreased folding resistance extending along said hinge line between said first and second relief cuts, whereby folding of said panel is confined to said hinge line and is preventing from diverging to a line skewed therefrom.
Claim 3
Dependent Claim
31 words
The blank of claim 1 wherein a portion of one of said relief cuts immediately adjacent the hinge line is curved away from said transverse direction toward the other relief cut.
Claim 4
Dependent Claim
28 words
The blank of claim 1 wherein said portion of the hinge line extending between said relief cuts comprises a major portion of the length of said hinge line.
Claim 5
Dependent Claim
25 words
The paperboard blank of claim 1 wherein the relief cuts are less than 1/4 inch in length extend all the way through the paperboard blank.
Claim 6
Independent Claim
150 words
A method of preparing a paperboard blank having a double-ended straight hinge line between two contiguous panels to ensure that the paperboard is folded on the hinge line without skewing at an angle thereto, comprising the steps of: making a first relief cut at a point on said hinge line remote from a first end thereof, said cut extending only into one of the panels at a direction generally transverse to the hinge line; and making a second relief cut on a point on said hinge line remote from a second end thereof and extending only into the other panel at a direction generally transverse to the hinge line, to form a path of decreased folding resistance along a portion of said hinge line extending between said relief cuts, whereby folding of said panel is confined to said hinge line and is prevented from diverging to a line skewed therefrom.
Claim 7
Independent Claim
150 words
A method of preparing a paperboard blank having a double-ended straight hinge line between two contiguous panels to ensure that the paperboard is folded on the hinge line without skewing at an angle thereto, comprising the steps of: making a first relief cut at a point on said hinge line remote from a first end thereof, said cut extending only into one of the panels at a direction generally transverse to the hinge line; and making a second relief cut on a point on said hinge line remote from a second end thereof and extending only into the other panel at a direction generally transverse to the hinge line, to form a path of decreased folding resistance along a portion of said hinge line extending between said relief cuts, whereby folding of said panel is confined to said hinge line and is prevented from diverging to a line skewed therefrom.
Claim 8
Dependent Claim
30 words
The method of claim 5 wherein a portion of one of said relief cuts immediately adjacent the hinge line is curved from said transverse direction toward the other relief cut.
Claim 9
Dependent Claim
28 words
The method of claim 5 wherein said portion of the hinge line extending between said relief cuts comprises a major portion of the length of said hinge line.
Claim 10
Dependent Claim
22 words
The method of claim 5 wherein the relief cuts are less than approximately 1/4 inch in length and extend through the paperboard.