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US3590759A
Expired / Lapsed
US
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Reinforcing strip for plastic articles and method and apparatus for making same
Assignee: Individual
•
Filing: 1969-11-19
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Granted: 1971-07-06
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Expires: 1989-11-19
Abstract
Abstract The present disclosure relates to a method of and apparatus for making a reinforcing strip for plastic articles and to such a strip. The strip comprises a series of individual slats projecting to either side of a medial joining portion securing the slats together in accurately spaced relationship, the medial portion being of reduced thickness and being previously stretched to provide a frangible connection. The strip is manufactured by slitting the strip from opposite edges toward the medial portion to form the slats, deflecting the slats to lie parallel with one another and at an angle to the plane of the initial strip while stretching and coining the medial joining portion. The angularly deflected slats are then reformed to a single plane, so the slats are spaced apart throughout the distance to which the medial joining portions have been stretched. The apparatus is primarily a pair of cooperable dies having cooperative slitting edges and deflecting surfaces for deflecting the slit slats and medial stretching and coining portions at which the medial portion of the strip is formed, together with a final straightening device for deflecting the slats back to their planar alignment.
Inventors
- 👤 George S Hendrie Jr
- 👤 Louis Truco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:11
CPC Classifications
B; B21; B21D; B21D35/00; B21D31/00; B21D31/04; B60; B60J; B60J10/00; B60J10/15; B60J10/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
In a method of making a metallic reinforcing strip to be embedded in a plastic article, the steps of slitting a planar metal strip from each longitudinal edge toward a medial longitudinal portion of the strip to form separate generally rectangular slats joined to one another only at said nonslitted longitudinal portion, tilting each such slat from the plane of the strip and on either side of said plane and stretching each of the medial longitudinal portions of said strips between the slats to join each slat to the next adjacent slat through an integral tab of reduced thickness metal, and finally returning the slats and tabs to the plane of said strip, thereby spacing the slats from one another through a dimension equivalent to the amount by which the intervening tab has been stretched.
Claim 2
Dependent Claim
135 words
In a method of making a metallic reinforcing strip to be embedded in a plastic article, the steps of slitting a planar metal strip from each longitudinal edge toward a medial longitudinal portion of the strip to form separate generally rectangular slats joined to one another only at said nonslitted longitudinal portion, tilting each such slat from the plane of the strip and on either side of said plane and stretching each of the medial longitudinal portions of said strips between the slats to join each slat to the next adjacent slat through an integral tab of reduced thickness metal, and finally returning the slats and tabs to the plane of said strip, thereby spacing the slats from one another through a dimension equivalent to the amount by which the intervening tab has been stretched.
Claim 3
Dependent Claim
155 words
In a method of making a metallic reinforcing strip to be embedded in a plastic article, the steps of simultaneously (1) forming a plurality of parallel slits from each longitudinal edge of a planar metal strip toward a medial longitudinal portion of the strip to form separate slats joined at said nonslitted medial longitudinal portion, (2) angularly deflecting each such slat from the plane of the strip to lie at an angle relative thereto and extending in a first common direction, and (3) deflecting and stretching the medial longitudinal portions of said strips bridging each such slit and immediately adjacent thereto in a second and different direction to join each slat to the next adjacent slat through an integral tab of reduced thickness coined metal, and finally flattening the slitted and deflected strip to space the slats from one another through a dimension equivalent to the amount by which the intervening tab has been stretched.
Claim 4
Dependent Claim
155 words
In a method of making a metallic reinforcing strip to be embedded in a plastic article, the steps of simultaneously (1) forming a plurality of parallel slits from each longitudinal edge of a planar metal strip toward a medial longitudinal portion of the strip to form separate slats joined at said nonslitted medial longitudinal portion, (2) angularly deflecting each such slat from the plane of the strip to lie at an angle relative thereto and extending in a first common direction, and (3) deflecting and stretching the medial longitudinal portions of said strips bridging each such slit and immediately adjacent thereto in a second and different direction to join each slat to the next adjacent slat through an integral tab of reduced thickness coined metal, and finally flattening the slitted and deflected strip to space the slats from one another through a dimension equivalent to the amount by which the intervening tab has been stretched.
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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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |