US3929272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced corrugated member
Assignee: Stone Container Corp
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Filing: 1975-03-14
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Granted: 1975-12-30
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Expires: 1995-03-14
Abstract
Abstract A structural member for use in shipping containers requiring the support of a brace made of wood or the like which includes a blank of corrugated paperboard which is folded into a hollow rectangular member with multiple walls and overlying cutouts to accommodate a rigid reinforcing insert having an aperture therein to receive a wood brace and a flange extending outwardly around the aperture to extend to the outer surface of the corrugated member.
Inventors
- 👤 Renile E Bowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:42
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/68; B65D2585/00; B65D2585/68; B65D2585/6802; B65D2585/6875; B65D2585/6877; B65D2585/6882; F; F02; F02B; F02B61/00; F02B61/04; F02B61/045
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
124 words
An improved skid for use in a shipping container or the like, said skid comprising: a pair of longitudinal members each formed from a single blank of Corrugated paperboard or the like and folded into a tube having a hollow rectangular cross section; each of said longitudinal members being folded around into substantially rectangular tubular relation and having positioned therein a rigid reinforcing insert; said reinforcing insert being adapted to fit snugly within the hollow interior of said folded longitudinal member; said reinforcing insert having a rectangular aperture formed therein, said aperture defined by a flange extending outwardly through at least one side of said longitudinal member and adapted to receive one end of a wooden cross member interconnecting said pair of longitudinal members.
Claim 2
Dependent Claim
124 words
An improved skid for use in a shipping container or the like, said skid comprising: a pair of longitudinal members each formed from a single blank of Corrugated paperboard or the like and folded into a tube having a hollow rectangular cross section; each of said longitudinal members being folded around into substantially rectangular tubular relation and having positioned therein a rigid reinforcing insert; said reinforcing insert being adapted to fit snugly within the hollow interior of said folded longitudinal member; said reinforcing insert having a rectangular aperture formed therein, said aperture defined by a flange extending outwardly through at least one side of said longitudinal member and adapted to receive one end of a wooden cross member interconnecting said pair of longitudinal members.
Claim 3
Dependent Claim
17 words
The skid of claim 1 including a spacing strut interconnecting said longitudinal members at one end thereof.
Claim 4
Dependent Claim
96 words
A structural member made from corrugated paperboard or similar sheet-like material adapted for use in a shipping container and further adapted to receive one end of a wood member, said structural member comprising: a single blank of said paperboard folded into a tube having a hollow rectangular cross section; said blank being folded around and having positioned therein a rigid reinforcing insert; said reinforcing insert being substantially rectangular in shape and adapted to fit snugly within the hollow interior of said folded blank; said insert having an aperture therethrough, and said blanks having aligned apertures therethrough.
Claim 5
Dependent Claim
96 words
A structural member made from corrugated paperboard or similar sheet-like material adapted for use in a shipping container and further adapted to receive one end of a wood member, said structural member comprising: a single blank of said paperboard folded into a tube having a hollow rectangular cross section; said blank being folded around and having positioned therein a rigid reinforcing insert; said reinforcing insert being substantially rectangular in shape and adapted to fit snugly within the hollow interior of said folded blank; said insert having an aperture therethrough, and said blanks having aligned apertures therethrough.
Claim 6
Dependent Claim
87 words
A rigid reinforcing insert adapted to be placed within a folded tubular longitudinal member, said longitudinal member folded into a tube having a hollow rectangular cross-section, said insert comprising: a substantially rectangular flat center frame; a perpendicular reinforcing ridge connected to said frame and extending around the outer periphery thereof and perpendicular thereto; and said center frame having a rectangular aperture formed therein, said aperture defined by a flange extending outwardly around the perimeter thereof on at least one side of said frame perpendicular to said frame.
Claim 7
Dependent Claim
87 words
A rigid reinforcing insert adapted to be placed within a folded tubular longitudinal member, said longitudinal member folded into a tube having a hollow rectangular cross-section, said insert comprising: a substantially rectangular flat center frame; a perpendicular reinforcing ridge connected to said frame and extending around the outer periphery thereof and perpendicular thereto; and said center frame having a rectangular aperture formed therein, said aperture defined by a flange extending outwardly around the perimeter thereof on at least one side of said frame perpendicular to said frame.
Claim 8
Dependent Claim
31 words
The reinforcing insert of claim 4 including reinforcing struts connected to said frame extending between said flange and said perpendicular ridge to increase the strength and rigidity of said reinforcing insert.
Claim 9
Dependent Claim
37 words
The reinforcing insert of claim 4 wherein said outwardly extending flange is formed with a first tapered surface on the inside thereof at the edge away from said frame to facilitate the insertion of a wooden member.
Claim 10
Dependent Claim
19 words
The reinforcing insert of claim 4 including raised ridges extending transversely across said flange and extending into said aperture.
Claim 11
Dependent Claim
107 words
The structure of claim 3 and in which said blank comprises: a first series of four rectangularly arranged wall panels forming an inner rectangular member; a second series of four rectangularly arranged wall panels encircling said first series of wall panels in face contact therewith, and an additional wall panel foldably connected to the end of the second series of rectangularly arranged wall panel and folded outwardly of one of said wall panels of said second series; said one panel of said second series, and the panels of said first and series which are parallel thereto having said aligned apertures therethrough; said additional wall panel being imperforate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |