US3915372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing means for plastic reinforced paperboard lug box
Assignee: A AND E PLASTIK PAK CO Inc
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Filing: 1974-12-05
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Granted: 1975-10-28
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Expires: 1994-12-05
Abstract
Abstract A plastic and paperboard lug box type produce container, comprised of a rectangular paperboard container having sides and ends, a bottom, and lids hinged to the upper edges of the sides, and rectangular, plastic end frames forming caps to receive limited portions of opposite ends of the container, the end walls of the container being stiffened against warpage out of their normal planes by bending a narrow flap therefrom on a horizontal hinge line, and there being lugs formed on the end frame to penetrate apertures in the end walls of the container, with hook ends thereon to engage over edges of these apertures and hold the end walls snugly against the end frames. The end frame has flanges which engage and overlap end portions of the container side walls, and rivets or staples secure these overlapped parts to secure the end frames and boxes in proper assembly notwithstanding repeated stresses in shipment over long hauls.
Inventors
- 👤 Walton B Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:24
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/001; B65D5/005; B65D5/20; B65D5/22; B65D5/42; B65D5/44; B65D5/441; B65D5/445
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
161 words
In a generally rectangular container with rigid rectangular, reinforcing end frames at opposite ends thereof, the container having rectangular bottom, side and end walls, and lids which are hinged to the upper edges of said side walls, said rectangular end frames comprising integral, coplanar, upper, lower and side flanges parallel with the end walls of the container and lying thereadjacent, and rectangular integral upper, lower and side flanges, integral with and projecting perpendicularly from said coplanar flanges from the outer margins thereof, whereby to provide reinforcing caps receiving therein the corresponding end walls of the container and end portions of said bottom walls, with the perpendicular side flanges thereof lying closely adjacent said side walls of said container; each of said end walls having a horizontal score line near one horizontal edge thereof and the flap so formed being bent through an acute angle on said score line, whereby to resist warpage of said end wall transversely of said score line.
Claim 2
Dependent Claim
161 words
In a generally rectangular container with rigid rectangular, reinforcing end frames at opposite ends thereof, the container having rectangular bottom, side and end walls, and lids which are hinged to the upper edges of said side walls, said rectangular end frames comprising integral, coplanar, upper, lower and side flanges parallel with the end walls of the container and lying thereadjacent, and rectangular integral upper, lower and side flanges, integral with and projecting perpendicularly from said coplanar flanges from the outer margins thereof, whereby to provide reinforcing caps receiving therein the corresponding end walls of the container and end portions of said bottom walls, with the perpendicular side flanges thereof lying closely adjacent said side walls of said container; each of said end walls having a horizontal score line near one horizontal edge thereof and the flap so formed being bent through an acute angle on said score line, whereby to resist warpage of said end wall transversely of said score line.
Claim 3
Dependent Claim
43 words
The subject matter of claim 1, wherein said score line is near the upper edge of each end wall, and the flap formed thereby is bent inwardly relative to the container through an acute angle relative to the plane of the end wall.
Claim 4
Dependent Claim
26 words
The container of claim 1, including means on the end frames engaging said flaps to force them into and to hold them in said bent positions.
Claim 5
Dependent Claim
26 words
The container of claim 2, including means on the end frames engaging said flaps to force them into and to hold them in said bent positions.
Claim 6
Dependent Claim
48 words
The container of claim 1, wherein: portions of the perpendicular side flanges of the end frames overlap adjacent portions of the side walls of the container; and including fastener elements penetrating said overlapping portions of said side flanges of said end frames and side walls of said container.
Claim 7
Dependent Claim
52 words
The subject matter of claim 3, including also: headed prongs on and projecting from said upper and lower coplanar frame flanges and cooperating apertures in said end walls of said container which receive and engage behind the heads of said prongs to releasably hold said end walls snugly against said frame flanges.
Claim 8
Dependent Claim
35 words
The subject matter of claim 3, in which said flap engaging means comprise walls of angular profile on said end frames engaging the upper edges of said flaps to support them in said bent positions.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |