Patent US3758018A successfully refreshed from Google Patents.
US3758018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carton divider
Assignee: BELL FIBRE PROD CORP
•
Filing: 1971-12-23
•
Granted: 1973-09-11
•
Expires: 1991-12-23
Abstract
Abstract A carton divider is formed of a rectangular cardboard blank having a slit partially through the thickness of the blank and substantially centrally of the longitudinal dimension thereof. Perforations extend through the remaining thickness of the blank in the slit formed therein. Three equally spaced apart score lines are formed transversely of the slit and perforations. Upon folding the blank along the score lines and then parting the blank along the perforations in the region of the center score line by pulling on both sides of the perforated section, the cardboard blank is then folded into a cross-shaped divider unit. The apparatus for forming the same consists of a conveyor with a single cutting and perforating wheel which forms a slit and perforations in a single operation.
Inventors
- 👤 R Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:59
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/42; B65D5/44; B65D5/48; B65D5/48024; B65D5/48026; B65D5/48028
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
159 words
A divider and cushion member for cartons and the like comprising in combination a rectangular corrugated cardboard blank including first and second opposite side sheets and a corrugated core sheet, a slit formed in the blank substantially centrally thereof and along the major dimension of the rectangle, said slit being only partially through the thickness of said blank, said slit being substantially entirely through said first sheet and said core, perforations extending along the blank and in the slit to extend through the said second sheet, and score lines extending transversely of said slit and perforations and spaced apart with two score lines being on said first sheet of the blank and the third score line being on said second sheet of the blank, whereby folding the cardboard blank along said score lines and then parting the perforations in the region of the center score line to fold the blank longitudinally upon itself will form a cross-shaped divider member.
Claim 2
Dependent Claim
159 words
A divider and cushion member for cartons and the like comprising in combination a rectangular corrugated cardboard blank including first and second opposite side sheets and a corrugated core sheet, a slit formed in the blank substantially centrally thereof and along the major dimension of the rectangle, said slit being only partially through the thickness of said blank, said slit being substantially entirely through said first sheet and said core, perforations extending along the blank and in the slit to extend through the said second sheet, and score lines extending transversely of said slit and perforations and spaced apart with two score lines being on said first sheet of the blank and the third score line being on said second sheet of the blank, whereby folding the cardboard blank along said score lines and then parting the perforations in the region of the center score line to fold the blank longitudinally upon itself will form a cross-shaped divider member.
Claim 3
Dependent Claim
24 words
The divider and cushion member of claim 1 wherein said score lines are equally spaced from the ends and equally spaced from one another.
Claim 4
Dependent Claim
21 words
The divider and cushion member of claim 1 wherein said slit and perforations are formed substantially centrally of the cardboard blank.
References Cited (Backward Citations)
US1550646A
Cited
US1860567A
Cited
GB471136A
Cited
US2593092A
Cited
US2860825A
Cited
US3301460A
Cited
US3317111A
Cited
US3384289A
Cited
US3682367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |