US3763529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating barbed tape
Assignee: Individual
•
Filing: 1972-02-10
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Granted: 1973-10-09
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Expires: 1992-02-10
Abstract
Abstract A process for manufacturing barbed tape from strip without scrap loss. The first step in manufacture is slitting the edges of the strip to form points. The points are uncovered either by elongating the tape or by bending portions of the edges of the tape.
Inventors
- 👤 D Musgrave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:19
CPC Classifications
B; B21; B21F; B21F25/00; Y; Y10; Y10T; Y10T29/00; Y10T29/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
A method of fabricating barbed tape comprising: forming a pluraLity of slits intersecting one edge of a tape of flexible hard deformable material at an acute angle with but not extending to the longitudinal centerline of said tape, each successive slit being oppositely inclined relative to said centerline; forming on the other edge of said tape at a position substantially opposite each of said slits a similar parallel slit, whereby the successive integral portions of said tape do not lie in a straight line; and elongating said tape thereby displacing pointed portions of said tape away from said centerline.
Claim 2
Independent Claim
99 words
A method of fabricating barbed tape comprising: forming a pluraLity of slits intersecting one edge of a tape of flexible hard deformable material at an acute angle with but not extending to the longitudinal centerline of said tape, each successive slit being oppositely inclined relative to said centerline; forming on the other edge of said tape at a position substantially opposite each of said slits a similar parallel slit, whereby the successive integral portions of said tape do not lie in a straight line; and elongating said tape thereby displacing pointed portions of said tape away from said centerline.
Claim 3
Dependent Claim
21 words
The method set forth in claim 1 further characterized by the stated operations being performed simultaneously on more than one tape.
Claim 4
Dependent Claim
21 words
The method set forth in claim 1 further characterized by an operation for affixing reinforcing means to said tape after elongating.
Claim 5
Dependent Claim
18 words
The method set forth in claim 1 further characterized by the use of machinery to elongate said tape.
Claim 6
Dependent Claim
24 words
The method set forth in claim 1 further characterized by the said elongating being accomplished manually by the step known as the Spanish windlass.
Claim 7
Dependent Claim
21 words
The method set forth in claim 1 further characterized by an operation for coiling said tape into a coil, after elongating.
Claim 8
Dependent Claim
22 words
The method set forth in claim 1 further characterized by an operation for twisting said tape about its longitudinal axis, after elongating.
Claim 9
Dependent Claim
25 words
The method set forth in claim 1 further characterized by the forming of holes in said tape before elongating thereby making it easier to deform.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |