US3843038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corner protector construction
Assignee: REDI CONTAINER CORP
•
Filing: 1973-07-23
•
Granted: 1974-10-22
•
Expires: 1993-07-23
Abstract
Abstract A corner protector construction used for protecting appliances, furniture, sheet rock panels and the like during shipping and handling. The construction is formed from a blank comprising a corrugated sheet having a plurality of parallel foldlines in one direction and a center foldline perpendicular thereto. The blank is adapted to be folded so that a threewalled configuration is achieved with each wall being positioned at a 90* angle relative to the other two walls to thereby define a corner configuration. The folding automatically locates a plurality of thicknesses of the corrugated sheet with respect to each wall. One of the walls is defined by means of interlocking sections with the interlocking structure providing for automatic locking as the blank is folded into the desired configuration.
Inventors
- 👤 A Sax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:23
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/02; B65D81/05; B65D81/053; B65D81/055; B65D81/056; B65D2581/00; B65D2581/02; B65D2581/05; B65D2581/051; B65D2581/052; B65D2581/053
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
232 words
A blank for use in forming a construction used for protecting the exposed corners of objects during shipping and handling, said blank comprising a substantially rectangular corrugated sheet, a first foldline extending approximately along one centerline of the sheet, second, third and fourth foldlines extending parallel with the first foldline, said second, third and fourth foldlines all being located on one side of said first foldline, a fifth foldline extending parallel with said first foldline, said fifth foldline being located on the opposite side of said first foldline and a sixth foldline extending approximately along the centerline of the sheet and extending perpendicular to the other foldlines, said blank being foldable about said parallel foldlines to a configuration wherein the outer blank portion between said sixth foldline and an outer edge of the blank is positioned at 90* relative to the blank portion between said first foldline and said sixth foldline, and wherein the blank portion between said second and fourth foldlines is positioned in underlying relationship relative to said outer blank portions at an angle of 90* relative to the remaining blank portions on said one side of the first foldline, said outer portion being divided into two sections on opposite sides of said sixth foldline, and including locking tabs defined by said sections whereby the blank can be folded about said sixth foldline to bring said tabs into locking engagement.
Claim 2
Dependent Claim
232 words
A blank for use in forming a construction used for protecting the exposed corners of objects during shipping and handling, said blank comprising a substantially rectangular corrugated sheet, a first foldline extending approximately along one centerline of the sheet, second, third and fourth foldlines extending parallel with the first foldline, said second, third and fourth foldlines all being located on one side of said first foldline, a fifth foldline extending parallel with said first foldline, said fifth foldline being located on the opposite side of said first foldline and a sixth foldline extending approximately along the centerline of the sheet and extending perpendicular to the other foldlines, said blank being foldable about said parallel foldlines to a configuration wherein the outer blank portion between said sixth foldline and an outer edge of the blank is positioned at 90* relative to the blank portion between said first foldline and said sixth foldline, and wherein the blank portion between said second and fourth foldlines is positioned in underlying relationship relative to said outer blank portions at an angle of 90* relative to the remaining blank portions on said one side of the first foldline, said outer portion being divided into two sections on opposite sides of said sixth foldline, and including locking tabs defined by said sections whereby the blank can be folded about said sixth foldline to bring said tabs into locking engagement.
Claim 3
Dependent Claim
47 words
A blank in accordance with claim 1 foldable into a three-walled construction comprising a horizontal wall and two vertical walls extending perpendicular to the horizontal wall and perpendicular to each other, all of said walls defining three thicknesses of corrugated sheet adjacent the junctures of the walls.
Claim 4
Dependent Claim
43 words
A blank in accordance with claim 2 defining a large internally located diamond shape cutout, said blank being foldable so that opposed edges of the cutout move into abutting relationship to bring said vertical walls into perpendicular relationship with respect to each other.
Claim 5
Dependent Claim
40 words
A blank in accordance with claim 2 including ears formed integrally with the blank and adapted to be automatically positioned perpendicular to said horizontal wall to thereby provide locating means for bands utilized for securing the constructions to said objects.
Claim 6
Dependent Claim
50 words
A blank in accordance with claim 1 including slots defined by each of said sections of said outer portion, said slots being brought into alignment as the blank is folded into the construction, and including locking tabs at the ends of said slots to achieve the interlocking of said sections.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |