US3669252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface protection material
Assignee: Kimberly Clark Corp
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Filing: 1971-03-08
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Granted: 1972-06-13
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Expires: 1991-03-08
Abstract
Abstract A protector sheet material serving as packing material for fine furniture and its combination with the furniture and a surrounding contacting container in such manner as to inhibit marking or buffing of the furniture in shipment. The protector sheet material has a foam surface for contacting the furniture and a paper backing for contacting the container in such manner that slippage in shipment occurs preferentially between the container and paper backing.
Inventors
- 👤 Ernest C Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/02; B65D81/03; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/31
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
24 words
The combination according to claim 1 wherein the slide angle of the foam is at least twice the slide angle of the paper element.
Claim 2
Dependent Claim
70 words
The combination according to claim 2 wherein the paper element is spot bonded to the foam ply and the bond of the paper element to the foam ply is sufficient to resist shearing action imposed on the protector sheet material by shifting of the article within the container, and the slide angle difference between the compressible foam and the paper element relative to methyl methacrylate is about 25* to 33*.
Claim 3
Dependent Claim
32 words
The combination according to claim 3 wherein the ply of foam material has a thickness in the range of about one-sixteenth to one-fourth inch and the paper element has a lesser thickness.
Claim 4
Dependent Claim
39 words
The combination according to claim 1 wherein the slid angle of the foam is in excess of 50* and the slide angle of the paper element is less than 25*, both relative to methyl methacrylate as a slide surface.
Claim 5
Dependent Claim
76 words
In a protector sheet material, a porous, resilient, easily compressible foam and a paper backing adhesively secured on one face of the foam only, said paper backing having an exposed surface which is readily slippable relative to a methyl methacrylate surface, said foam being relatively non-slidable with respect to the said methyl methacrylate surface, the foam having a thickness in the range of about one-sixteenth to one-fourth inch and the paper backing has a lesser thickness.
Claim 6
Dependent Claim
39 words
Protector sheet material according to claim 6 wherein the foam has a slide angle in excess of 50* and the paper element has a slide angle of less than 25* both relative to methyl methacrylate as a slide surface.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |