Patent US3556318A successfully refreshed from Google Patents.
US3556318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dunnage bag
Assignee: International Paper Co
•
Filing: 1969-05-29
•
Granted: 1971-01-19
•
Expires: 1989-05-29
Abstract
Abstract An inflatable and disposable dunnage bag having an airtight bladder enclosed in a multi-ply container folded along parallel fold lines so that the bag, when not inflated, is flat with a back wall and a front wall, the corresponding plies in the back and front wall of the container being joined to each other by tapes extending along the end of the walls and adhesively secured to the ends of the plies.
Inventors
- 👤 Clinton R Hollis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/02; B65D81/05; B65D81/051; B65D81/052; B60; B60P; B60P7/00; B60P7/06; B60P7/065
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
195 words
An inflatable dunnage bag comprising a multi-ply container made up of a plurality of sheets superimposed one over the other and folded along parallel fold lines so that the sheets are flat between the fold lines, forming back and front container walls between the fold lines and with one of the longitudinal edges of each sheet overlapped with, and adhesively secured to, the longitudinal edge of the same sheet; an airtight bladder sealed at its opposite ends in said container; a valve in the wall of said bladder for inflating said bladder; said valve extending outwardly through one of said walls of said multi-ply container and a plurality of folded tapes; each of one said plurality of folded tapes having a first folded side and a second folded side each one of said folded tapes being superimposed one over the other, and extending transversely across the end of each bag substantially from one fold line to the other; each one of said folded tapes being adhesively secured along said first folded side to one of said container walls and along said second folded side to the plies of the other one of said container walls.
Claim 2
Dependent Claim
195 words
An inflatable dunnage bag comprising a multi-ply container made up of a plurality of sheets superimposed one over the other and folded along parallel fold lines so that the sheets are flat between the fold lines, forming back and front container walls between the fold lines and with one of the longitudinal edges of each sheet overlapped with, and adhesively secured to, the longitudinal edge of the same sheet; an airtight bladder sealed at its opposite ends in said container; a valve in the wall of said bladder for inflating said bladder; said valve extending outwardly through one of said walls of said multi-ply container and a plurality of folded tapes; each of one said plurality of folded tapes having a first folded side and a second folded side each one of said folded tapes being superimposed one over the other, and extending transversely across the end of each bag substantially from one fold line to the other; each one of said folded tapes being adhesively secured along said first folded side to one of said container walls and along said second folded side to the plies of the other one of said container walls.
Claim 3
Dependent Claim
43 words
An inflatable dunnage bag, as recited in claim 1, in which the folded tapes adhesively secured to adjacent plies are secured to the outer surface of one of said adjacent plies and the inner surface of the other of said adjacent plies, respectively.
Claim 4
Dependent Claim
31 words
An inflatable dunnage bag, as recited in claim 2, in which said folded tapes adhesively secured to adjacent plies are adhesively tacked to each other across the width of said tapes.
Claim 5
Dependent Claim
30 words
An inflatable dunnage bag, as recited in claim 3, in which said sheets are 100 pound kraft paper sheets and the outer sheet of saId container is coated with polyethylene.
Claim 6
Dependent Claim
23 words
An inflatable dunnage bag, as recited in claim 4, in which said bladder is a polyethylene tube heat sealed at its opposite ends.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |