US3570746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article carrier and method of interlocking a pair of panels in face contacting relation
Assignee: Mead Corp
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Filing: 1969-04-01
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Granted: 1971-03-16
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Expires: 1989-04-01
Abstract
Abstract An article carrier of the wraparound type having top, bottom and sidewalls foldably joined along their side edges to form a tubular structure wherein one wall is a composite panel incorporating a pair of face contacting lap panels is provided with locking means in the form of a locking tab formed in one of the lap panels which is inserted through an opening defined by a retaining tab formed in the other lap panel and disposed in coincidental relationship with respect to the locking tab. Formation of the lock is facilitated by angularly extending slits formed in the lap panel in which the opening is formed. One end of each slit is in communication with one side of the opening. During formation of the lock the laterally projecting shoulders of the arrowhead type locking tab are received by the slits so as to facilitate the formation of the lock. Upon completion of the lock the lateral projections of the locking tab are out of registry with the slits.
Inventors
- 👤 Prentice J Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:51
CPC Classifications
B; B65; B65D; B65D71/00; B65D71/06; B65D71/12; B65D71/14; B65D71/16; B65D71/20; B65D71/24; B65D71/26; B65D71/28; B65D71/32; B65D71/34; B65D2571/00; B65D2571/00123; B65D2571/00129; B65D2571/00135; B65D2571/00154; B65D2571/00185; B65D2571/00246; B65D2571/00253; B65D2571/00259; B65D2571/00265; B65D2571/00277; B65D2571/00432; B65D2571/00438; B65D2571/00444; B65D2571/00555; B65D2571/00561; B65D2571/00567; B65D2571/00648; B65D2571/00654; B65D2571/0066; B65D2571/00709; B65D2571/00716; B65D2571/00833; B65D2571/0087
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
211 words
An article carrier of the wraparound-type comprising top, side and bottom walls foldably joined to form a tubular structure, one wall of the carrier being a composite panel including a pair of lap panels disposed in overlapping relation to each other, a locking tab formed completely within one of said lap panels and including a main portion generally parallel to the end edges of said composite panel and having lateral projections on opposite sides thereof, a retaining tab formed in the other of said lap panels and in general parallel coincidence with said locking tab, said retaining tab extending in a longitudinal direction which is generally opposite to the direction in which said locking tab extends when in locked condition, and a pair of slits formed in said other lap panel and extending into the opening defined by said retaining tab, said slits being disposed to receive the lateral projections on said locking tab thereby to facilitate insertion of said locking tab into the opening defined by said retaining tab, said slits being arranged so that one end of each slit coincides with a different side edge of the opening defined by said retaining tab and each slit being alongside and diverging laterally from the associated side edge of the opening.
Claim 2
Dependent Claim
211 words
An article carrier of the wraparound-type comprising top, side and bottom walls foldably joined to form a tubular structure, one wall of the carrier being a composite panel including a pair of lap panels disposed in overlapping relation to each other, a locking tab formed completely within one of said lap panels and including a main portion generally parallel to the end edges of said composite panel and having lateral projections on opposite sides thereof, a retaining tab formed in the other of said lap panels and in general parallel coincidence with said locking tab, said retaining tab extending in a longitudinal direction which is generally opposite to the direction in which said locking tab extends when in locked condition, and a pair of slits formed in said other lap panel and extending into the opening defined by said retaining tab, said slits being disposed to receive the lateral projections on said locking tab thereby to facilitate insertion of said locking tab into the opening defined by said retaining tab, said slits being arranged so that one end of each slit coincides with a different side edge of the opening defined by said retaining tab and each slit being alongside and diverging laterally from the associated side edge of the opening.
Claim 3
Dependent Claim
53 words
A carrier according to claim 1 wherein the width of said main portion of said locking tab is approximately equal to the width of said retaining tab and wherein said lateral projections on said locking tab extend in a lateral direction a distance substantially equal to the lateral components of said slits respectively.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |