US4382326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staple supporting and staple removing strip
Assignee: 3M Co
•
Filing: 1981-01-19
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Granted: 1983-05-10
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Expires: 2001-01-19
Abstract
Abstract A staple-supporting strip for use with staples when binding documents together which affords removal and retention of the staples without detrimental affect on the document. The staple-supporting strip comprises two narrow layers of tough flexible polymeric material between about 0.1 and 0.15 mm thick. The strip may be colored or printed with a staple target area and a coating of a pressure-sensitive adhesive holds the bottom layer of the strip on the uppermost sheet of the documents to be stapled together such that the top layer may be peeled from the lower layer to unclench the staple legs during removal.
Inventors
- 👤 George R. Rabuse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:36
CPC Classifications
B; B42; B42D; B42D5/00; B42B; B42B4/00; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53909
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
157 words
A staple-supporting strip for use in overlaying sheets to be stapled and affording subsequent removal and retention of the staples comprising two narrow elongate layers of tough flexible polymeric material, comprising an upper layer and a lower layer with the layers joined at one end, said upper layer having a thickness of between about 0.1 and 0.15 mm (0.004 and 0.006 inch) and the lower layer having a thickness between 0.05 mm and 0.15 mm (0.002 and 0.006 inch) and having a width dimension of between about 1.2 cm and 2.5 cm and having a length of between about 5 cm and 7.6 cm (2 and 3 inches), and means on the exposed surface of said lower strip for temporarily adhering said strip to the surface of a sheet and for holding said free end of said lower layer to said sheet when the upper layer is peeled away from said lower layer to remove the staples.
Claim 2
Dependent Claim
157 words
A staple-supporting strip for use in overlaying sheets to be stapled and affording subsequent removal and retention of the staples comprising two narrow elongate layers of tough flexible polymeric material, comprising an upper layer and a lower layer with the layers joined at one end, said upper layer having a thickness of between about 0.1 and 0.15 mm (0.004 and 0.006 inch) and the lower layer having a thickness between 0.05 mm and 0.15 mm (0.002 and 0.006 inch) and having a width dimension of between about 1.2 cm and 2.5 cm and having a length of between about 5 cm and 7.6 cm (2 and 3 inches), and means on the exposed surface of said lower strip for temporarily adhering said strip to the surface of a sheet and for holding said free end of said lower layer to said sheet when the upper layer is peeled away from said lower layer to remove the staples.
Claim 3
Dependent Claim
18 words
A staple-supporting strip as defined in claim 1 wherein said upper layer is longer than the lower layer.
Claim 4
Dependent Claim
17 words
A staple-supporting strip according to claim 1 or 2 wherein said strip is formed of polyethylene terephthalate.
Claim 5
Dependent Claim
20 words
A staple-supporting strip according to claim 1 wherein said means for adhering and holding comprises a readily releasable pressure-sensitive adhesive.
Claim 6
Dependent Claim
17 words
A staple-supporting strip according to claim 4 wherein said adhesive is an acrylate copolymer microsphere structured adhesive.
Claim 7
Dependent Claim
44 words
A staple-supporting strip according to claim 4 wherein said adhesive is a narrow strip of double coated pressure-sensitive adhesive tape applied to said exposed surface of said lower layer, with the surface of said tape exposed having a readily releasable pressure-sensitive adhesive coated thereon.
Claim 8
Dependent Claim
19 words
A staple-supporting strip according to claim 6 wherein said readily releasable adhesive is an acrylate copolymer microsphere structured adhesive.
Claim 9
Dependent Claim
27 words
A staple-supporting strip according to claim 1 wherein one of said upper and lower layers has a coating of transparent colored ink printed on one surface thereof.
Claim 10
Dependent Claim
26 words
A staple-supporting strip according to claim 8 wherein said ink is printed on said upper layer to define a rectangular staple-receiving target area on said surface.
Claim 11
Dependent Claim
50 words
A staple-supporting strip according to claim 2 wherein said upper layer has means for temporarily adhering the extended end thereof to the surface of a said sheet when said strip is applied to a said sheet and said exposed surface of said lower layer is placed on a said sheet.
Claim 12
Dependent Claim
33 words
A staple-supporting strip according to claim 10 wherein said means for adhering said strip and said means for adhering said extended end of said upper layer comprises an acrylate copolymer microsphere structured adhesive.
Claim 13
Dependent Claim
38 words
A staple-supporting strip according to claim 10 wherein said upper layer has a coating of transparent colored ink on one surface thereof, said ink coating being applied selectively to define a rectangular staple-receiving target area on said strip.
Claim 14
Dependent Claim
22 words
A staple-supporting strip according to claim 1 wherein said strip is formed by folding an elongate strip of said polymeric material transversely.
Claim 15
Dependent Claim
26 words
A staple-supporting strip according to claim 2 wherein said strip is formed by folding an elongate strip of said polymeric material transversely with the edges aligned.
Claim 16
Dependent Claim
27 words
A staple-supporting strip according to claim 11 wherein said strip is formed by folding a long narrow strip of said polymeric material transversely with the edges aligned.
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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) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |